--- sml/trunk/HISTORY 2001/11/14 16:53:16 977 +++ sml/trunk/HISTORY 2004/08/16 01:21:56 1614 @@ -7,12 +7,3219 @@ The form of an entry should be: -Name: -Date: +Name: +Date: yyyy/mm/dd Tag: Description: ---------------------------------------------------------------------- +Name: Allen Leung (leunga (at) reservoir (dot) com) +Date: 2004/08/15 21:21:00 EST +Tag: leunga-110_48-udgraph +Description: + +Another bug fix from Carl Hauser: + +diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml +> 48c48 +> < | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else +> e::L) +> --- +> > | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L) +> Without this, any deletion of an edge in an undirected graph does severe +> violence to the graph. + +---------------------------------------------------------------------- +Name: Allen Leung (leunga (at) reservoir (dot) com) +Date: 2004/08/10 23:35:00 EST +Tag: leunga-110_48-ppc +Description: + + The IBM/MacOS syntax switch on PPC was incorrectly swapped. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/10/04 12:00:00 CDT +Tag: Release_110_48 +Description: + +New working version (110.48). NEW BOOTFILES! + +---------------------------------------------------------------------- +Name: Allen Leung (leunga (at) reservoir (dot) com) +Date: 2004/08/09 12:21:00 EST +Tag: leunga-110_47-dijsktra +Description: + +Bug fix from Carl Hauser: + +single_source_shortest_paths in dijkstra.sml was observed to get wrong +answers (by comparing to single_source_shortest_paths in bellman-ford.sml). + +The problem is that following the expression A.update(dist,s,Num.zero) +it is necessary to update the priority queue using Q.decreaseWeight(Q,s). + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/08/06 18:10:00 CDT +Tag: blume-20040806-cmdline +Description: + +Fiddled with handling of command-line options: + + * sml now quits after processing the command line + if -H, -S, -h, or -s appears as the last + command-line argument + * a new option -q terminates the session when encountered on + the command line; subsequent arguments will be ignored + * bug fixes: short (erroneous) arguments are no longer ignored + completely + +---------------------------------------------------------------------- +Name: Allen Leung (leunga (at) reservoir (dot) com) +Date: 2004/08/04 18:17:00 EST +Tag: leunga-110_47-ppc-ibm-asm +Description: + + - Added minimal IBM assembly syntax support for PowerPC. + + - Cygwin: manually changed the file cygwin.def. Some exported symbols have + been altered in the runtime. We need an automatic way to keep the file + in sync. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/08/04 14:00:00 CDT +Tag: Release_110_47 +Description: + +New working version (110.47). NEW BOOTFILES! + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/08/03 14:25:00 CDT +Tag: blume-20040803-callingconv +Description: + +Added low-level support for choosing C calling conventions by +twiddling the type of rawccall. (See +src/compiler/Semant/types/cproto.sml for details.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/08/02 15:55:00 CDT +Tag: blume-20040802-backout +Description: + +Backed out of change to win32-filesys.c. The earlier patch to +get_file_time caused CM to produce files with the wrong time stamp. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/08/02 14:45:00 CDT +Tag: blume-20040802-nlffi-win32 +Description: + +Added NLFFI support for Win32, adapted from a patch provided by David +Hansel. This is currently completely untested. Also, the issue +concerning stdcall vs. ccall is still unresolved. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/07/30 17:55:00 CDT +Tag: blume-20040730-various +Description: + +Gearing up towards 110.47... + +- various minor bugfixes to ml-nlffigen +- a beginning of a manual for nlffi + +- eliminated 'export name=value' in config/install.sh as this does + not work with certain versions of /bin/sh + (Thanks to David King at Motorola for catching this.) + +- several bugfixes provided or suggested by David Hansel at Reactive Systems: + - added a test for tm==NULL to gmtime.c and localtime.c + - applied patch for incorrect GetFileTime under win32 + - toSeconds -> toMilliseconds in Win32/win32-process.sml + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/07/21 18:20:00 CDT +Tag: blume-20040721-nlffigen +Description: + +- Fixed minor issue in ml-nlffigen: Now generate structure T_foo + for a typedef to an incomplete type, but leave out the "typ" member. + (This is just for consistency.) +- Started to produce what is supposed to become better (i.e., comprehensive) + documentation of what ml-nlffigen does and produces. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/07/14 16:25:00 CDT +Tag: blume-20040714-union +Description: + +Added C_UNION to c-calls/c-types.sml and updated the machinery +(ml-nlffigen, cproto.sml) that conveys C function interface +information to the code generator. + +However, the actual architecture-specific implementation of function +arguments and results that are C unions is still not implemented. + +---------------------------------------------------------------------- +Name: Allen Leung (leunga (at) reservoir (dot) com) +Date: 2004/07/14 14:38:00 EST +Tag: leunga-110_46_1-ppc-lwzu +Description: + + Added these instructions to the PowerPC architecture: + LBZU(X), LHZU(X), LWZU(X), + STWU(X), STFDU, STFSU + + etc... + + Note: I haven't added their instruction encoding into the description. + +---------------------------------------------------------------------- +Name: Allen Leung (leunga (at) reservoir (dot) com) +Date: 2004/07/13 15:04:00 EST +Tag: leunga-110_46_1-ppc-lwarx +Description: + + Added the two instructions LWARX and STWCX to the PowerPC +instruction set. + + A (untested) rewrite of loop-structure.sml. The old version +is completely broken. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/07/13 13:50:00 CDT +Tag: blume-20040713-nlffi +Description: + +- use paramAlloc to report c-calls with too many arguments + (for PPC version where parameter area is pre-allocated) +- added ccall_maxargspace to machspec (to implement the above) +- made "make" commend in CM's "make" tool configurable +- added option (default: on) for passing the name of the SML/NJ's "bin" + directory to "make"; the call looks like this: + + make SMLNJ_BINDIR= + + This can be used by the Makefile to, e.g., pick the "right" version + of ml-nlffigen. +- minor code tweaks + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/07/12 22:50:00 CDT +Tag: blume-110_46_1-macosx-nlffi +Description: + +NLFFI under Mac OS X now working (sort of). This is largely untested, +though. + +Note: 1. You have to make a new, clean build of the runtime system. + 2. There are new BOOTFILES, you have to use them! + (Doing the bootstrap process yourself would be *very* painful! + If you absolutely have to do it, build the system under + a different architecture and then cross-compile.) + +Version bumped to 110.46.1 to account for runtime data format changes. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/06/18 14:30:00 CDT +Tag: blume-20040618-unix +Description: + +Changed the implementation of structure Unix so that the same stream +is returned every time one of the {text,bin}{In,Out}streamOf functions +is invoked on the same proc. This is not what the spec currently +says -- although IMO it arguably should. (See discussion below.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/06/17 18:15:00 CDT +Tag: Release_110_46 +Description: + +New working version (110.46). NEW BOOTFILES! + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/06/17 17:20:00 CDT +Tag: blume-20040617-timer-unix +Description: + +Changed the interface of structures Timer and Unix to match the most +recent Basis spec. + +In the case of Unix there still seems to be an open/weird issue: + + The {text,bin}{In,Out}streamOf functions are supposed to create + fresh streams whenever they are called -- as opposed to have them + return the same stream every time. This design is supposed to + prevent space leaks caused by proc values hanging on to streams. + + The reap function, on the other hand, is supposed to close the + streams. This cannot be done without having a handle on the + stream in proc after all... + +I took the liberty to implement the following stopgap solution: + + The proc value hangs on to the most recently created stream(s). + Reap closes those. If either or both of the two streams hadn't + been created at all yet, then reap will close the corresponding + file descriptors directly. + +PS: I don't understand the original space leak argument anymore. If +a proc hangs on to the imperative stream, then I/O operations on those +will advance the state of the cached stream and avoid the space leak. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/28 16:45:00 CDT +Tag: blume-20040528-basis +Description: + +Added signature PACK_REAL and exported functor PrimIO. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/25 16:00:00 CDT +Tag: blume-20040525-group-owner +Description: + +CM now ignores (but still accepts) the "owner" information in group +descriptions. The owner of a group is its next enclosing +library. Each group must have a unique owner. (There is a virtual +"toplevel" library that owns groups which are not nested within a real +library.) Previously, each group had to explicitly declare its owner, +and CM would check that such a declaration is correct. The new scheme +is to have CM check that for each group there is precisely one owning +library. + +The advantage of the new scheme is that the programmer no longer needs +to maintain the somewhat annoying owner information. The downside is +that CM cannot enforce the ownership rule across multiple runs of +CM.make. Fortunately, enclosing the same group in two different +libraries A and B which are not part of the same program does not +cause real problems. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/20 16:00:00 CDT +Tag: blume-20040520-win32 +Description: + +Made the win32 version work again. (Strangely, a misplaced comma had +slipped into win32-process.c which prevented the runtime from being +compiled correctly.) + +Also, included a minor addition to ml-build.bat analogous to what was +done in blume-20040519-ml-build. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/19 22:10:00 CDT +Tag: blume-20040519-ml-build +Description: + +Arranged for ml-build to clean up after itself a little bit better. +The script generates a temporary SML source file and compiles it using +CM, so CM generates metadata (GUID, SKEL, objectfile) for it. It now +gets rid of those at the end, so they don't accumulate under .cm. + +This required a minor change to install.sh because the name of the +metadata directory (default: .cm) is actually configurable at +installation time. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/18 15:50:00 CDT +Tag: blume-20040518-mkreader +Description: + +Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective +implementations from internal modules PosixBinPrimIO and PosixTextPrimIO. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/11 14:35:00 CDT +Tag: blume-20040511-win32sock +Description: + +Added previously missing support for many socket-related functions +under win32. Thanks to David Hansel +for the voluminous patch! + +(I have not tested this patch under win32 yet.) + +Here is David's e-mail: + +Hi, + +Attached to this email you find a diff against sml/nj 110.45 +that will enable socket support under Windows. + +To apply the patch (using unix or cygwin) +1) gunzip runtime.diff.gz +2) "cd" into "src/runtime" in the source tree of a fresh + 110.45 installation. +3) patch -p 1 < [your/path/to]runtime.diff + +The code compiles fine but has NOT yet been extensively tested. +I only ran a few tests for basic socket client functionality +(which worked fine). Especially the functions that use ioctl +are not tested at all and might not work (see below). + +I implemented this since we want to move to a newer version of sml/nj +but need socket support in order to use it. This is the first time I +even had a look at the sml/nj source, so please review my changes +before making this part of the distribution! Here are a few issues +that I think might be better for someone to solve who is more +familiar with the sml/nj source (and socket programming): + +- getnetbyaddr.c and getnetbyname.c will raise a "not implemented" + exception since I could not figure out what the windows equivalent + of these functions is + +- In sockets-osdep.h there are a some #include statements that are + only used in a few files that include sockets-osdep.h + +- In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but + does not process its return value since I don't know how to + report an error upwards. + +- It would probably be good to have a call to WSACleanup() when + the library is unloaded (if there is such a possibility). + Otherwise I think Windows will take care of this automatically + when the process finishes. + +- I used ioctlsocket() as a replacement for ioctl() but I have + no idea if that is actually the proper replacement on Windows. + +- All these issues are marked in the code by "FIXME" comments. + +We use sml/nj extensively in our products and are quite happy +with it. I hope this contribution will help you. + +Keep up the good work! + +David + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/11 14:20:00 CDT +Tag: blume-20040511-installml +Description: + +Fixed two bugs in installml script. (Thanks to Vesa A. Norrman for +the patch.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/11 14:05:00 CDT +Tag: blume-20040511-nlffi-netbsd +Description: + +Added support for nlffi under netbsd. (Thanks to Vesa A. Norrman for +the patch.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/11 12:05:00 CDT +Tag: blume-20040511-exports +Description: + +As per request by Adam Chlipala , extended various +export lists in compiler-related .cm-files. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/05/11 11:35:00 CDT +Tag: blume-20040511-allsource +Description: + +The installer now honors the "src-smlnj" target again, although its meaning +has changed from "all sources required for the compiler" to "all sources +the installer knows about". In other words, if you enable "src-smlnj" +in the "targets" file, then the installer will pull in sources for +everything. (Notice that this refers to source code only. Compiled +code is still only installed for modules that were requested explicitly +or which are required for other modules that were requested explicitly.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/04/23 17:40:00 CDT +Tag: blume-20040423-ieee-scan +Description: + +Fixed IEEEReal.scan (and .fromString) so that if there is an overflow +in the exponent calculation we get INF or ZERO (depending on the mantissa +and the sign of the exponent). + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/04/23 10:40:00 CDT +Tag: blume-20040423-ml-build +Description: + +The ml-build script now terminates with a non-0 status when something +goes wrong. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/04/22 16:35:00 CDT +Tag: blume-20040422-Option +Description: + +Made exception Option to be the same as exception Option.Option +(as it should be). + +---------------------------------------------------------------------- +Name: Allen Leung (leunga (at) reservoir (dot) com) +Date: 2004/03/19 14:40:00 EST +Tag: leunga-20040319-cygwin-nlffi +Description: + +Fixed the runtime so that ml-nlffi-lib runs on the cygwin version +of SML/NJ. The problem is that + + lib = dlopen(NULL, ...) + f = dlsym(lib, "malloc"); + +does not work on Windows unless we explicitly export symbols +such as 'malloc' during linking. We fixed this by explicitly +exporting the required symbols with the magic gcc incantation: + + -Wl,--export-all cygwin.def + +where cygwin.def is a file containing all the symbols that +we wish to export. + +I suspect this is a Windows problem and we'll have to +do the same (somehow with windows compilers) when +we build the native win32 version with the system +calls LoadLibrary/GetProcAddress. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/03/04 16:35:00 CST +Tag: blume-20040304-intinf-fmt +Description: + +Fixed problem with IntInf.fmt (sign would show up on the right instead +of on the left for BIN, OCT, and HEX). + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/03/04 11:25:00 CST +Tag: blume-20040304-symlinks +Description: + +Fixed problem with installer script (unix only) where bin/ml-yacc and +friends pointed (via symlinks) to absolute locations instead of just +.run-sml. This was reported by Vesa A Norrman. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/02/13 14:50:00 CST +Tag: Release_110_45 +Description: + +New working version (110.45). New bootfiles. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/01/26 15:15:15 CST +Tag: blume-20040126-toplevel +Description: + +Improved handling of exceptions at the interactive toplevel. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2004/01/26 11:25:00 +Tag: blume-20040126-app +Description: + +Type of top-level "app" corrected. +Added code for setting vp_limitPtrMask to Win32-specific runtime. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/11/18 17:10 CST +Tag: blume-20031118-basis-fiddle +Description: + +- changed Timer interface to what might become the spec +- POSIX_FLAGS -> BIT_FLAGS according to spec +- some other minor discrepancies wrt. spec eliminated + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/11/06 12:00:00 CST +Tag: Release_110_44 +Description: + +New working version (110.44). New bootfiles. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/11/04 11:50:00 CST +Tag: blume-20031104-move-libraries +Description: + +Eliminated the "dont_move_libraries" directive in config/targets. +(The mechanism was broken and could not be fixed easily. Moreover, +there does not seem to be any reason not to move all libraries into +lib during installation. I originally implemented this directive as a +backward-compatibility feature when I first introduced the new CM. +Now that things have been stable for a long time and going back to the +old CM is not an option, there is no reason to keep it around.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/11/03 16:00:00 CST +Tag: blume-20031103-installdir +Description: + +Made installer honor INSTALLDIR variable again. (Thanks to Chris +Richards for pointing out the problem and providing the solution.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/10/01 17:05:00 CDT +Tag: blume-20031001-lal-mlrisc +Description: + +MLRISC bug fix from Lal. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/30 16:10:00 CDT +Tag: blume-20030930-primio-bat +Description: + +1. Added openVector, nullRd, and nullWr to PRIM_IO. +2. Improved .bat files (for Win32 port) to make things work under Win95. + (thanks to Aaron S. Hawley for this one) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/26 16:05:00 CDT +Tag: blume-20030926-wrappriv +Description: + +Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/26 15:00:00 CDT +Tag: blume-20030926-110_43_3 +Description: + +- additional cleanup +- version number bump, NEW BOOTFILES + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/26 12:00:00 CDT +Tag: blume-20030926-ppautoload +Description: + +I modified the read-eval-print loop so that the autoloader gets +invoked whenever the prettyprinter tries to look up a symbol that +is not currently defined in the toplevel environment but which +appears in CM's autoload registry. As a result, we see far fewer of +those ?.Foo.Bar.xxx names in the prettyprinter's output. + +In addition to this I tried to clean up some pieces of the Basis +implementation (e.g., Socket, Word8Array) in order to prevent other +instances of these ?.Foo.Bar.xxx names from being printed. + +The mechanism that picks names for types still needs some work, though. +(Right now it seems that if there is a type A.t which is defined to +be B.u, but B is unavailable at toplevel, then A.t gets printed as +"?.B.u" although the perhaps more sensible solution would be to use +"A.t" in this case. In other words, the prettyprinter should follow +a chain of DEFtycs not farther than there are corresponding toplevel +names in the current environment.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/24 16:31:00 CDT +Tag: blume-20030924-installer +Description: + +Another installer tweak: All the ML code for the installer is now +compiled during CMB.make and put into a little library called +$smlnj/installer.cm. The installation then simply invokes + + sml -m $smlnj/installer.cm + +and everything happens automagically. + +Win32: ML code senses value of environment variable SMLNJ_HOME. +Unix: ML code senses values of environment variables ROOT, CONFIGDIR, + and BINDIR. + +The new scheme guarantees that the ML code responsible for the installation +is in sync with the APIs of the main system. Also, the installer is +somewhat faster because the installer script is precompiled. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/24 15:35:00 CDT +Tag: blume-20030924-synsock +Description: + +Added a signature SYNCHRONOUS_SOCKET to basis.cm. This is like SOCKET +but excludes all non-blocking operations. Defined SOCKET (in Basis) +and CML_SOCKET in terms of SYNCHRONOUS_SOCKET. Removed superfluous +implementations of non-blocking operations from CML's Socket +structure. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/24 15:10:05 CDT +Tag: blume-20030924-sockets +Description: + +1. Fixed SOCKET API and implementation to match Basis spec. + This required changing the internal representation of sockets to one + that remembers (for each socket file descriptor) whether it is currently + blocking or non-blocking. This state is maintained lazily (i.e., a system + call is made only if the state actually needs to change). + +2. OS-specific details of sockets were moved into separate files, thus + making it possible to unify the bulk of the socket implementations + between Unix and Win32. + +3. CML's socket API changed accordingly. + (Note that we need to remove non-blocking functions from this API + since they are redundant in the case of CML!) + +4. CML's socket implementation now makes use of non-blocking functions + provided by Basis, thus removing all OS-dependent code from this part + of CML. + +5. Changed Real64.precision from 52 to 53. Minor cleanup in Real64 code. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/22 12:10:00 CDT +Tag: blume-20030922-110_43_2 +Description: + +Made a new interim version and bootfiles for developer's bootstrapping +convenience. + + 110.43.2 -- NEW BOOTFILES + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/19 15:55:00 CDT +Tag: blume-20030919-cmdir +Description: + +1. new-install.sh -> install.sh +2. changed default CM "metadata" directory name to ".cm" (instead of "CM") +3. tweaked installer so that another name instead of .cm can be chosen + at install time (by setting the CM_DIR_ARC environment variable + during installation); once installation is complete, the name is + fixed + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/18 16:00:00 CDT +Tag: blume-20030918-110_43_1 +Description: + +Made a new interim version and bootfiles for developer's bootstrapping +convenience. + + 110.43.1 -- NEW BOOTFILES + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/18 15:20:00 CDT +Tag: blume-20030918-misc +Description: + +1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as + this seems to be controversial at the moment) and used those in + Posix.ProcEnv.times. + +2. Added Time.{from,to}Nanoseconds to Time. + +3. Improved Real.{from,to}LargeInt by avoiding needless calculations. + For example, fromLargeInt never needs to look at more than 3 "big + digits" to get its 53 bits of precision. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/17 16:30:00 CDT +Tag: blume-20030917-real32-slices +Description: + +Added an entry to the primitive environment +(compiler/Semant/statenv/prim.sml) for int32->real64 conversion and +added code to compiler/CodeGen/main/mlriscGen.sml to implement it. + +Removed some of the "magic" constants in real64.sml and replaced them +with code that generates these values from their corresponding +integer counterparts. + +Made all(?) the slice-related changes to the Basis and made everything +compile again... + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/15 17:45:00 CDT +Tag: blume-20030915-rbase +Description: + +Fixed bug in Real.fromLargeInt. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/13 18:11:00 CDT +Tag: blume-20030913-libinstall +Description: + +Minor bugfix in config/libinstall (set anchor with path to +standalone tool after installing it, otherwise libraries that +need ml-lex or ml-yacc won't compile the first time the installer +runs). + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/12 11:45:00 CDT +Tag: blume-20030912-various +Description: + + - fixed bug in Real.toLargeInt + - fixed bug in Posix.ProcEnv.times + - changed inputLine functions to return an option + - minor installer improvements / bugfixes + - changed default @SMLalloc parameter for x86/celeron to 64k + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/09 22:00:00 CDT +Tag: Release_110_43 +Description: + + New working release 110.43. New bootfiles. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/09 19:20:00 CDT +Tag: blume-20030909-installer +Description: + +Rewrote large parts of config/install.sh in SML (config/libinstall.sml). +Modified config/install.bat to take advantage of it. Also modified +config/install.sh (and called it config/new-install.sh) to take advantage +of it on Unix systems. (The SML code is (supposed to be) platform- +independent.) + +The installer can now install everything under Win32 +as well as under *nix as long as it compiles. + +Other changes: + + - made CML compile again under Win32 + - made eXene compile under Win32 (by providing a fake structure UnixSock + and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv) + - fixed a bug in nowhere: it assumed that type OS.Process.status is the + same as type int; under Win32 it isn't + - fixed some slice-related problems in the win32-specific parts of CML + - added a functor argument "sameVol" to os-path-fn.sml in the Basis + (under Win32, the volume name is case-insensitive, and the + OS.Path code compares volume names for equality) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/08 11:55:00 CDT +Tag: blume-20030908-fullpath +Description: + +Made Win32 version of OS.FileSys.fullPath return current directory +when given an empty string. This is what the spec says, and incidentally, +CM depends on it. (CM otherwise goes into an infinite loop in certain +cases when presented with the name of a non-existing .cm file.) + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/09/04 16:30:00 CDT +Tag: blume-20030905-slices-etc +Description: + + 1. Changed interface to vectors and arrays in Basis to match + (draft) Basis spec. + 2. Added signatures and implementations of slices according to + Basis spec. + 3. Edited source code throughout the system to make it compile again + under 1. and 2. (In some cases code had to be added to have it + match the new signatures.) + 4. MLRISC should be backward-compatible: the copies of the originals + of files that needed to change under 3. were retained, the .cm files + check the compiler version number and use old versions when + appropriate. + 5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to + dirstream -> string option (in accordance with Basis spec). + 6. When generating code that counts lines, ml-lex used function + CharVector.foldli, taking advantage of its old interface. + This has been replaced with the corresponding code from + CharVectorSlice. (html-lex must be re-lexed!) + 7. BitArray in smlnj-lib/Util has been extended/modified to match the + new MONO_ARRAY signature. (Do we need BitArraySlice?) + 8. Removed temporary additions (fromInternal, toInternal) from the + (now obsolete) IntInf in smlnj-lib/Util. + 9. Cleaned up structure Byte. + 10. Added localOffset, scan, and fromString to Date (according to spec). + Cleaned/corrected implementation of Date. + (Still need to check for correctness; implement better canonicalizeDate.) + 11. Added "scan" to signature IEEE_REAL. + 12. Some improvements to IntInf [in particular: efficiency-hack for + mod and rem when second operand is 2 (for parity checks).] + 13. Changed representation of type Time.time, using a single IntInf.int + value counting microseconds. This considerably simplified the + implementation of structure Time. We now support negative time + values; scan and fromString handle signs. + 14. Functor PrimIO now takes two additional arguments (VectorSlice and + ArraySlice). + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/08/28 17:00:00 CDT +Tag: blume-20030828-intinf +Description: + +This is a major update which comes with a version number bump +(110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES, +and an implementation of IntInf in the Basis. + +There are a fairly large number of related changes and updates throughout +the system: + +Basis: + - Implemented IntInf. + - Made LargeInt a projection of IntInf (by filtering through INTEGER). + - Added some missing Real64 operations, most notably Real.toLargeInt. + - Added FixedInt as a synonym for Int32. + +compiler: + * Added support for a built-in intinf type. + - literals + - pattern matching + - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.) + - overloading on literals and operations + + This required adding a primitive type intinf, some additional + primops, and implementations for several non-trivial intinf + operations in Core. (The intinf type is completely abstract + to the compiler; all operations get delegated back to the Core.) + + * Intinf equality is handled by polyequal. However, the compiler + does not print its usual warning in this case (since polyequal + is the right thing to do there). + + * Improved the organization of structure InlineT. + + * A word about conversion primops: + If conversions involving intinf do not cancel out during + CPS contract, then the compiler must insert calls to Core functions. + Since all core access must be resolved already during the FLINT + translate phase, it would be too late a the time of CPS contract + to add new Core calls. For this reason, conversion primops + for intinf carry two arguments: 1. the numeric argument that + they are supposed to convert, and 2. the Core function that + can help with this conversion if necessary. If CPS contract + eliminates a primop, then the associated Core function becomes + dead and goes away. Intinf conversion primops that do not get + eliminated by CPS contract get rewritten into calls of their + core functions by a separate, new phase. + +interactive system: + - Control.Print.intinfDepth controls max length of intinf constants + being printed. (Analogous to Control.Print.stringDepth.) + - Cleanup in printutil and pputil: got rid of unused stuff and + duplicates; replaced some of the code with code that makes better + use of library functionality. + +CM: + Bugfix: parse-errors in init group (system/smlnj/init/init.cmi) + are no longer silent. + +CKIT: + Fixed mismatched uses of Int32 and LargeInt. I always decided + in favor of LargeInt -- which is now the same as IntInf. + CKIT-knowledgable people should check whether this is what's + intended and otherwise change things back to using Int32 or + FixedInt. + +Throughout the code: + Started using IntInf.int literals and built-in operations + (e.g., comparison with 0) where this seems appropriate. + + +---------------------------------------------------------------------- +Name: Dave MacQueen (dbm@cs.uchicago.edu) +Date: 2003/08/13 11:36:00 CDT +Tag: dbm-20030813-mcz-merge1 +Description: + +Merging changes from the mcz-branch development branch into trunk. +These changes involve replacement of the emulated old prettyprinter +interface with direct use of the SML/NJ Lib PP library, and fixing +of a couple of bugs (895, 1186) relating to error messages. A new +prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml}) +has been added. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/08/11 15:45:00 CDT +Tag: blume-20030811-windows +Description: + +Version number bumped to 110.42.9. NEW BOOTFILES!!! + + http://smlnj.cs.uchicago.edu/dist/working/110.42.9/ + +This patch restores SML/NJ's ability to run under win32. There are a +number of changes, including fixes for several bugs that had gone +unnoticed until now: + + - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when + trying to run the win32 version from within cygwin.) + + - There are a number of simple .bat scripts that substitute for their + corresponding Unix shell-scripts. (See below.) + + - The internals of ml-build have been modified slightly. The main + difference is that instead of calling ".link-sml" (or link-sml.bat) + using OS.Process.system, the ML process delegates this task back + to the script. Otherwise problems arise in mixed environments such + as Cygwin where scripts look and work like Unix scripts, but + where OS.Process.system cannot run them. + + - In CM, the srcpath pickler used native pathname syntax -- which + is incorrect in the case of cross-compilation. The new pickle format + is independent of platform-specific naming conventions. + + - Path configuration files (such as lib/pathconfig) can now choose + between native and standard syntax. Placing a line of the form + + standard! + + into the file causes all subsequent paths to be interpreted using + CM standard pathname syntax (= Unix conventions); a line + + native! + + switches back to native style. This was needed so that + path config files can be written portably, see src/system/pathconfig. + + - Runtime system: + + - win32-filesys.c: get_file_time and set_file_time now + access modification time, not creation time. + + - I/O code made aware of new array representation. + + - Bug fixes in X86.prim.masm. + + - src/system/makeml made aware of win32. (For use under cygwin + and other Unix-environments for windows.) + + - In Basis, fixed off-by-one error in win32-io.sml (function vecF) + which caused BinIO.inputAll to fail consistently. + +.bat scripts: + + Windows .bat scripts assume that SMLNJ_HOME is defined. + + - sml.bat, ml-yacc.bat, ml-lex.bat: Driver scripts for standalone + applications (sml, ml-yacc, ml-lex). + - ml-build.bat: analogous to ml-build. + - config\install.bat: Analogous to config/install.sh. This requires + that SMLNJ_HOME is set and that Microsoft Visual C is ready to use. + (nmake etc. must be on the path, and vcvars32 must have been run.) + Moreover, sources for ml-lex and ml-yacc need to exist under src, + and the bootfile hierarchy must have been unpacked under + sml.boot.x86-win32. + The script is very primitive and does a poor job at error checking. + It only installs the base system, ml-lex, and ml-yacc. No other + libraries are being installed (i.e., you get only those that + are part of the compiler.) + - link-sml.bat: analogous to .link-sml, but not currently used + +Unrelated bug fixes: + + - ml-nlffigen now exports structures ST_* corresponding to incomplete + types. + - Added getDevice to PP/src/pp-debug-fn.sml. (Would not compile + otherwise.) + +---------------------------------------------------------------------- +Name: Dave MacQueen (macqueen@cs.uchicago.edu) +Date: 2003/06/17 +Tag: macqueen-20030617-bug895 +Description: + +Modified compiler/Elaborator/print/pptype.sml to fix bug 895. +Tag will be used for new development branch (mcz-branch) for +use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/05/27 16:55:00 CDT +Tag: blume-20030527-polyeq +Description: + +Tried to eliminated most cases of polymorphic equality. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/05/21 17:45:00 CDT +Tag: blume-20030517-complete +Description: + +Two changes: + + 1. Added a flag for controlling whether non-exhaustive bindings will + be treated as errors (default is false). + 2. Cleaned up the *entire* source tree so that CMB.make goes through + without a single non-exhaustive match- or bind warning. + +---------------------------------------------------------------------- +Name: Matthias Blume (blume (at) tti - c (dot) org) +Date: 2003/05/17 10:20:00 CDT +Tag: blume-20030517-absyn +Description: + +1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn. + + This mainly affects the quality of error messages. However, some + of the code is now more straightforward than before. (Treatment of + the above four constructs in translate.sml is much simpler than + the "macro-expansion" that was going on before. Plus, the mach- + compiler no longer gets invoked just to be able to compile an + if-expression.) + +2. The ErrorMsg.Error exception is now caught and absorbed by the + interactive loop. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2003/05/16 13:05:00 CDT +Tag: leunga-20030516-cygwin-runtime +Description: + + Ported the runtime system to cygwin, which uses the unix +x86-unix bin files. Missing/buggy features: + + o getnetbyname, getnetbyaddr: these functions seem to be missing in + the Cygwin library. + o Ctrl-C handling may be flaky. + o Windows system calls and Windows I/O are not supported. + + A new set of binfiles is located at: + + http://www.dorsai.org/~leunga/boot.x86-unix.tgz + + This is only needed for bootstrapping the cygwin version of smlnj. + Other x86 versions can use the existing binfiles. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2003/04/08 15:42:00 CDT +Tag: blume-20030408-listpair +Description: + +1. Added a target 'mlrisc' to installer. + +2. Added missing elements to structure ListPair. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2003/01/07 10:40:00 EST +Tag: leunga-20030107-int-rem +Description: + +Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86. +The arguments to the SUBL instruction were swapped. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/12/12 16:25:00 EST +Tag: blume-20021212-risc-ra +Description: + +Fixed a serious bug in the rewrite code for FP spilling/reloading that +sent the RA into an infinite loop when floating point registers get +spilled. (Because of this bug, e.g., nucleic stopped compiling between +110.37 and 110.38.) +There was another set of potential problems related to the handling of +MLRISC annotations (but those did not yet cause real problems, apparently). + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/12/06 22:40:00 EST +Tag: blume-20021206-cm-fileid +Description: + +Added a call of SrcPath.sync at the beginning of Parse.parse (in CM). +This fixes the problem of CM getting confused by files that suddenly +change their identity (e.g., by getting unlinked and recreated by some +text editor such as vi). There might be a better/cheaper/cleaner way +of doing this, but for now this will have to do. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/10/28 09:50:00 EST +Tag: blume-20021028-typecheck +Description: + +Exported structure Typecheck from $smlnj/viscomp/core.cm. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/10/17 09:10:00 EDT +Tag: Release_110_42 +Description: + +In good old tradition, there has been a slight hiccup so that we have +to patch 110.42 after the fact. The old release tag has been replaced +(see below). + +The change solves a problem with two competing approaches the +configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in +each other's way. + +This change only affects the runtime system code and the installer script. +(No new bootfiles.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/10/16 12:00:00 EDT +Tag: Release_110_42_removed +Description: + +New working release. New bootfiles. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/10/10 13:10:00 EDT +Tag: blume-20021010-ppc-divs +Description: + +The mltree operator DIVS must be implemented with an overflow check on +the PPC because the hardware indicates divide-by-zero using "overflow" as +well. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/07/23 11:45:00 +Tag: blume-20020723-smlnj-home +Description: + +Sml now senses the SMLNJ_HOME environment variable. If this is set, +then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless +CM_PATHCONFIG is also set), the path configuration file is assumed +to be in $SMLNJ_HOME/lib/pathconfig. This way one can easily move +the entire tree to some other place and everything will "just work". + +(Companion commands such as ml-build and ml-makedepend also sense this +variable.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/07/12 21:19:00 EDT +Tag: blume-20020712-liveness +Description: + +Exported two useful "step" functions from liveness module (MLRISC). + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/07/05 16:00 EDT +Tag: Release_110_41 +Description: + +New working release. New bootfiles. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/07/05 10:25:00 EDT +Tag: blume-20020705-btimp +Description: + +Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that +other clients can set up backtracing support. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/06/25 17:23:00 EDT +Tag: blume-20020625-fpmax +Description: + +Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point +case. (The sense of the isNaN test was reversed -- which made min and +max always return their first argument.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/06/11 +Tag: blume-20020611-unixpath +Description: + +Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/06/10 16:35:00 EDT +Tag: blume-20020610-ieeereal +Description: + +I back-ported my implementation of IEEEReal.fromString from the +idlbasis-devel branch so that we can test it. + +Another small change is that ppDec tries to give more information +than just "" in the case of functors. However, this code is +broken in some mysterious way if the functor's body's signature +has not been declared by ascription but gets inferred from the +implementation. This needs fixing... + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/31 +Tag: blume-20020531-btrace-mode +Description: + +Resurrected SMLofNJ.Internals.BTrace.mode. (It accidentally fell by +the wayside when I switched over to using Controls everywhere.) + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/05/23 12:21:40 EDT +Tag: george-20020523-visual-labels +Description: + +Labels are now displayed in the graphical output to make +the fall-through and target blocks obvious. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/22 11:03:00 EDT +Tag: blume-20020522-shrink +Description: + +John tweaked yesterday's fix for 1131 to handle an out-of-memory +situation that comes up when allocating huge arrays. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/21 16:00:00 EDT +Tag: Release_110_40 +Description: + +New working release (110.40). New bootfiles. + +[Also: John Reppy fixed GC bug 1131.] + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/21 12:35:00 EDT +Tag: blume-20020521-cmdoc +Description: + +CM documentation update. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/21 10:55:00 EDT +Tag: blume-20020521-misc +Description: + +- John tweaked runtime to be silent on heap export (except when + GC messages are on). +- I added a few more things (cross-compiling versions of CMB) to + config/preloads (as suggestions). + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/20 22:25:00 EDT +Tag: blume-20020520-controls +Description: + +- Added ControlUtil structure to control-lib.cm. +- Use it throughout. +- Used Controls facility to define MLRISC controls (as opposed to + registering MLRISC control ref cells with Controls after the fact) +- Fixed messed-up controls priorities. + +* Removed again all the stuff from config/preloads that one wouldn't + be able to preload at the time the initial heap image is built. + (Many libraries, e.g., CML, do not exist yet at this time. The + only libraries that can be preloaded via config/preloads are those + that come bundled with the bootfiles.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/20 10:59:00 EDT +Tag: blume-20020520-preloads +Description: + +Added a lot of commented-out suggestions for things to be included +in config/preloads. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/05/18 14:20:00 EDT +Tag: leunga-20020518-mdl +Description: + +o Made the mdl tool stuff compile and run again. +o I've disabled all the stuff that depends on RTL specifications; they + are all badly broken anyway. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/17 16:49:00 EDT +Tag: blume-20020517-controls +Description: + +0. John Reppy made several modifications to the SML/NJ library. + In particular, there is a shiny new controls-lib.cm. + +1. Pushed new controls interface through compiler so that everything + compiles again. + +2. Added FormatComb and FORMAT_COMB to the CML version of the + SML/NJ library (so that CML compiles again). + +3. Modified init scripts because XXX_DEFAULT environment variables + are no longer with us. (Boot-time initialization is now done + using the same environment variables that are also used for + startup-time initialization of controls.) + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/05/15 09:20:10 EDT +Tag: george-20020515-pseudo-op-decls +Description: + + All pseudo-ops emitted before the first segment declaration +such as TEXT, DATA, and BSS directives are assumed to be global +declarations and are emitted first in the assembly file. This is +useful in a number of situations where one has pseudo-ops that are not +specific to any segment, and also works around the constraint that one +cannot have client pseudo-ops in the TEXT segment. + + Because no segment is associated with these declarations it is +an error to allocate any space or objects before the first segment +directive and an exception will be raised. However, we cannot make +this check for client pseudo-ops. + + These top level declarations are a field in the CFG graph_info. +In theory you can continue to add to this field after the CFG has been +built -- provided you know what you are doing;-) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/13 16:40:00 EDT +Tag: blume-20020513-pp-etc +Description: + +A few minor bugfixes: + + - Stopgap measure for bug recently reported by Elsa Gunter (ppDec). + (Bogus printouts for redefined bindings still occur. Compiler + bug should no longer occur now. We need to redo the prettyprinter + from scratch.) + + - CM pathname printer now also adds escape sequences for ( and ) + + - commend and docu fixes for ml-nlffi + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/05/10 16:40:00 EDT +Tag: blume-20020510-erg-textio +Description: + +Applied the following bugfix provided by Emden Gansner: + + Output is corrupted when outputSubstr is used rather than output. + + The problem occurs when a substring + + ss = (s, dataStart, dataLen) + + where dataStart > 0, fills a stream buffer with avail bytes left. + avail bytes of s, starting at index dataStart, are copied into the + buffer, the buffer is flushed, and then the remaining dataLen-avail + bytes of ss are copied into the beginning of the buffer. Instead of + starting this copy at index dataStart+avail in s, the current code + starts the copy at index avail. + + Fix: + In text-io-fn.sml, change line 695 from + val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0) + to + val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/04/12 13:55:00 EDT +Tag: blume-20020412-assyntax +Description: + +1. Grabbed newer assyntax.h from the XFree86 project. +2. Fiddled with how to compile X86.prim.asm without warnings. +3. (Very) Minor cleanup in CM. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/04/01 (no joke!) 17:07:00 EST +Tag: blume-20020401-x86div +Description: + +Added full support for div/mod/rem/quot on the x86, using the machine +instruction's two results (without clumsily recomputing the remainder) +directly where appropriate. + +Some more extensive power-of-two support was added to the x86 instruction +selector (avoiding expensive divs, mods, and muls where they can be +replaced with cheaper shifts and masks). However, this sort of thing +ought to be done earlier, e.g., within the CPS optimizer so that +all architectures benefit from it. + +The compiler compiles to a fixed point, but changes might be somewhat +fragile nevertheless. Please, report any strange things that you might +see wrt. div/mod/quot/rem... + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/29 17:22:00 +Tag: blume-20020329-div +Description: + +Fixed my broken div/mod logic. Unfortunately, this means that the +inline code for div/mod now has one more comparison than before. +Fast paths (quotient > 0 or remainder = 0) are not affected, though. +The problem was with quotient = 0, because that alone does not tell +us which way the rounding went. One then has to look at whether +remainder and divisor have the same sign... :( + +Anyway, I replaced the bootfiles with fresh ones... + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/29 14:10:00 EST +Tag: blume-20020329-inlprims +Description: + +NEW BOOTFILES!!! Version number bumped to 110.39.3. + +Primops have changed. This means that the bin/boot-file formats have +changed as well. + +To make sure that there is no confusion, I made a new version. + + +CHANGES: + +* removed REMT from mltree (remainder should never overflow). + +* added primops to deal with divisions of all flavors to the frontend + +* handled these primops all the way through so they map to their respective + MLRISC support + +* used these primops in the implementation of Int, Int32, Word, Word32 + +* removed INLDIV, INLMOD, and INLREM as they are no longer necessary + +* parameterized INLMIN, INLMAX, and INLABS by a numkind + +* translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including + floating point + +* used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32, + and Real (but Real.abs maps to a separate floating-point-only primop) + + +TODO items: + +* Hacked Alpha32 instruction selection, disabling the selection of REMx + instructions because the machine instruction encoder cannot handle + them. (Hppa, PPC, and Sparc instruction selection did not handle + REM in the first place, and REM is supported by the x86 machine coder.) + +* Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction + selection phase. (The two can be streamlined because the hardware + delivers both quotient and remainder at the same time anyway.) + +* Think about what to do with "valOf(Int32.minInt) div ~1" and friends. + (Currently the behavior is inconsistent both across architectures and + wrt. the draft Basis spec.) + +* Word8 should eventually be handled natively, too. + +* There seems to be one serious bug in mltree-gen.sml. It appears, though, + as if there currently is no execution path that could trigger it in + SML/NJ. (The assumptions underlying functions arith and promotable do not + hold for things like multiplication and division.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/27 16:27:00 EST +Tag: blume-20020327-mlrisc-divisions +Description: + +Added support for all four division operations (ML's div, mod, quot, +and rem) to MLRISC. In the course of doing so, I also rationalized +the naming (no more annoying switch-around of DIV and QUOT), by +parameterizing the operation by div_rounding_mode (which can be either +DIV_TO_ZERO or DIV_TO_NEGINF). + +The generic MLTreeGen functor takes care of compiling all four +operations down to only round-to-zero div. + +Missing pieces: + + * Doing something smarter than relying on MLTreeGen on architectures + like, e.g., the x86 where hardware division delivers both quotient and + remainder at the same time. With this, the implementation of the + round-to-neginf operations could be further streamlined. + + * Remove inlining support for div/mod/rem from the frontend and replace it + with primops that get carried through to the backend. Do this for all + int and word types. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/25 17:25:00 EST +Tag: blume-20020325-divmod +Description: + +I improved (hopefully without breaking them) the implementation of Int.div, +Int.mod, and Int.rem. For this, the code in translate.sml now takes +advantage of the following observations: + + Let q = x quot y r = x rem y + d = x div y m = x mod y + +where "quot" is the round-to-zero version of integer division that +hardware usually provides. Then we have: + + r = x - q * y where neither the * nor the - will overflow + d = if q >= 0 orelse x = q * y then q else q - 1 + where neither the * nor the - will overflow + m = if q >= 0 orelse r = 0 then r else r + y + where the + will not overflow + +This results in substantial simplification of the generated code. +The following table shows the number of CFG nodes and edges generated +for + fun f (x, y) = x OPER y + (* with OPER \in div, mod, quot, rem *) + + + OPER | nodes(old) | edges(old) | nodes(new) | edges(new) + -------------------------------------------------------- + div | 24 | 39 | 12 | 16 + mod | 41 | 71 | 12 | 16 + quot | 8 | 10 | 8 | 10 + rem | 10 | 14 | 8 | 10 + + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/25 22:06:00 EST +Tag: blume-20020325-cprotobug +Description: + +Fixed a bug in cproto (c prototype decoder). + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/25 16:00:00 EST +Tag: blume-20020325-raw-primops +Description: + +I did some cleanup to Allen's new primop code and +replaced yesterday's bootfiles with new ones. +(But they are stored in the same place.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/24 22:40:00 EST +Tag: blume-20020324-bootfiles +Description: + +Made the bootfiles that Allen asked for. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/23 15:50:00 EST +Tag: leunga-20020323-flint-cps-rcc-primops +Description: + + 1. Changes to FLINT primops: + + (* make a call to a C-function; + * The primop carries C function prototype information and specifies + * which of its (ML-) arguments are floating point. C prototype + * information is for use by the backend, ML information is for + * use by the CPS converter. *) + | RAW_CCALL of { c_proto: CTypes.c_proto, + ml_args: ccall_type list, + ml_res_opt: ccall_type option, + reentrant : bool + } option + (* Allocate uninitialized storage on the heap. + * The record is meant to hold short-lived C objects, i.e., they + * are not ML pointers. With the tag, the representation is + * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8) + *) + | RAW_RECORD of {tag:bool,sz:int} + and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR + + 2. These CPS primops are now overloaded: + + rawload of {kind:numkind} + rawstore of {kind:numkind} + + The one argument form is: + + rawload {kind} address + + The two argument form is: + + rawload {kind} [ml object, byte-offset] + + 3. RAW_CCALL/RCC now takes two extra arguments: + + a. The first is whether the C call is reentrant, i.e., whether + ML state should be saved and restored. + b. The second argument is a string argument specifying the name of + library and the C function. + + These things are currently not handled in the code generator, yet. + + 4. In CProto, + + An encoding type of "bool" means "ml object" and is mapped into + C prototype of PTR. Note that "bool" is different than "string", + even though "string" is also mapped into PTR, because "bool" + is assigned an CPS type of BOGt, while "string" is assigned INT32t. + + 5. Pickler/unpicker + + Changed to handle RAW_RECORD and newest RAW_CCALL + + 6. MLRiscGen, + + 1. Changed to handle the new rawload/rawstore/rawrecord operators. + 2. Code for handling C Calls has been moved to a new module CPSCCalls, + in the file CodeGen/cpscompile/cps-c-calls.sml + + 7. Added the conditional move operator + + condmove of branch + + to cps. Generation of this is still buggy so it is currently + disabled. + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/03/22 14:18:25 EST +Tag: george-20020322-cps-branch-prob +Description: + +Implemented the Ball-Larus branch prediction-heuristics, and +incorporated graphical viewers for control flow graphs. + +Ball-Larus Heuristics: +--------------------- +See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml. + +By design it uses the Dempster-Shafer theory for combining +probabilities. For example, in the function: + + fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc) + +the ball-larus heuristics predicts that the n=0 is unlikely +(OH-heuristic), and the 'then' branch is unlikely because of the +RH-heuristic -- giving the 'then' branch an even lower combined +probability using the Dempster-Shafer theory. + +Finally, John Reppy's loop analysis in MLRISC, further lowers the +probability of the 'then' branch because of the loop in the else +branch. + + +Graphical Viewing: +------------------ +I merely plugged in Allen's graphical viewers into the compiler. The +additional code is not much. At the top level, saying: + + Control.MLRISC.getFlag "cfg-graphical-view" := true; + +will display the graphical view of the control flow graph just before +back-patching. daVinci must be in your path for this to work. If +daVinci is not available, then the default viewer can be changed +using: + + Control.MLRISC.getString "viewer" + +which can be set to "dot" or "vcg" for the corresponding viewers. Of +course, these viewers must be in your path. + +The above will display the compilation unit at the level of clusters, +many of which are small, boring, and un-interesting. Also setting: + + Control.MLRISC.getInt "cfg-graphical-view_size" + +will display clusters that are larger than the value set by the above. + + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/21 22:20:00 EST +Tag: blume-20020321-kmp-bugfix +Description: + +Changed the interface to the KMP routine in PreString and fixed +a minor bug in one place where it was used. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/21 20:30:00 EST +Tag: leunga-20020321-cfg +Description: + + Fixed a potential problem in cfg edge splitting. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/21 17:15:00 EST +Tag: leunga-20020321-x86-fp-cfg +Description: + + 1. Recoded the buggy parts of x86-fp. + + a. All the block reordering code has been removed. + We now depend on the block placement phases to do this work. + + b. Critical edge splitting code has been simplified and moved into the + CFG modules, as where they belong. + + Both of these were quite buggy and complex. The code is now much, much + simpler. + + 2. X86 backend. + + a. Added instructions for 64-bit support. Instruction selection for + 64-bit has not been committed, however, since that + requires changes to MLTREE which haven't been approved by + Lal and John. + + b. Added support for FUCOMI and FUCOMIP when generating code for + PentiumPro and above. We only generate these instructions in + the fast-fp mode. + + c. Added cases for JP and JNP in X86FreqProps. + + 3. CFG + + CFG now has a bunch of methods for edge splitting and merging. + + 4. Machine description. + + John's simplification of MLTREE_BASIS.fcond broke a few machine + description things: + + rtl-build.{sig,sml} and hppa.mdl fixed. + + NOTE: the machine description stuff in the repository is still broken. + Again, I can't put my fixes in because that involves + changes to MLTREE. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/20 15:55:00 EST +Tag: blume-20020320-kmp +Description: + +Implemented Knuth-Morris-Pratt string matching in PreString and used +it for String.isSubstring, Substring.isSubstring, and +Substring.position. + +(Might need some stress-testing. Simple examples worked fine.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/19 16:37:00 EST +Tag: blume-20020319-witnesses +Description: + +Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib. + +This implements a generic mechanism for changing constness qualifiers +anywhere within big C types without resorting to outright "casts". +(So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you +modify the constness at the outermost level.) +The implementation of "convert" is based on the idea of "witness" +values -- values that are not used by the operation but whose types +"testify" to their applicability. On the implementation side, "convert" +is simply a projection (returning its second curried argument). With +cross-module inlining, it should not result in any machine code being +generated. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/15 16:40:00 EST +Tag: blume-20020315-basis +Description: + +Provided (preliminary?) implementations for + + {String,Substring}.{concatWith,isSuffix,isSubstring} + +and + + Substring.full + +Those are in the Basis spec but they were missing in SML/NJ. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/14 21:30:00 EST +Tag: blume-20020314-controls +Description: + +Controls: +--------- + +1. Factored out the recently-added Controls : CONTROLS stuff and put + it into its own library $/controls-lib.cm. The source tree for + this is under src/smlnj-lib/Controls. + +2. Changed the names of types and functions in this interface, so they + make a bit more "sense": + + module -> registry + 'a registry -> 'a group + +3. The interface now deals in ref cells only. The getter/setter interface + is (mostly) gone. + +4. Added a function that lets one register an already-existing ref cell. + +5. Made the corresponding modifications to the rest of the code so that + everything compiles again. + +6. Changed the implementation of Controls.MLRISC back to something closer + to the original. In particular, this module (and therefore MLRISC) + does not depend on Controls. There now is some link-time code in + int-sys.sml that registers the MLRISC controls with the Controls + module. + +CM: +--- + + * One can now specify the lambda-split aggressiveness in init.cmi. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/13 17:30:00 EST +Tag: leunga-20020313-x86-fp-unary +Description: + +Bug fix for: + +> leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml +> Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002 +> - fun f(x,(y,z)) = Real.~ y; +> [autoloading] +> [autoloading done] +> fchsl (%eax), 184(%esp) +> Error: MLRisc bug: X86MCEmitter.emitInstr +> +> uncaught exception Error +> raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19 + +The problem was that the code generator did not generate any fp registers +in this case, and the ra didn't know that it needed to run the X86FP phase to +translate the pseudo fp instruction. This only happened with unary fp +operators in certain situations. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/13 14:00:00 EST +Tag: blume-20020313-overload-etc +Description: + +1. Added _overload as a synonym for overload for backward compatibility. + (Control.overloadKW must be true for either version to be accepted.) + +2. Fixed bug in install script that caused more things to be installed + than what was requested in config/targets. + +3. Made CM aware of the (_)overload construct so that autoloading + works. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/12 22:03:00 EST +Tag: blume-20020312-url +Description: + +Forgot to update BOOT and srcarchiveurl. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/12 17:30:00 EST +Tag: blume-20020312-version110392 +Description: + +Yet another version number bump (because of small changes to the +binfile format). Version number is now 110.39.2. NEW BOOTFILES! + +Changes: + + The new pid generation scheme described a few weeks ago was overly + complicated. I implemented a new mechanism that is simpler and + provides a bit more "stability": Once CM has seen a compilation + unit, it keeps its identity constant (as long as you do not delete + those crucial CM/GUID/* files). This means that when you change + an interface, compile, then go back to the old interface, and + compile again, you arrive at the original pid. + + There now also is a mechanism that instructs CM to use the plain + environment hash as a module's pid (effectively making its GUID + the empty string). For this, "noguid" must be specified as an + option to the .sml file in question within its .cm file. + This is most useful for code that is being generated by tools such + as ml-nlffigen (because during development programmers tend to + erase the tool's entire output directory tree including CM's cached + GUIDs). "noguid" is somewhat dangerous (since it can be used to locally + revert to the old, broken behavior of SML/NJ, but in specific cases + where there is no danger of interface confusion, its use is ok + (I think). + + ml-nlffigen by default generates "noguid" annotations. They can be + turned off by specifying -guid in its command line. + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/03/12 12 14:42:36 EST +Tag: george-20020312-frequency-computation +Description: + +Integrated jump chaining and static block frequency into the +compiler. More details and numbers later. + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/03/11 11 22:38:53 EST +Tag: george-20020311-jump-chain-elim +Description: + +Tested the jump chain elimination on all architectures (except the +hppa). This is on by default right now and is profitable for the +alpha and x86, however, it may not be profitable for the sparc and ppc +when compiling the compiler. + +The gc test will typically jump to a label at the end of the cluster, +where there is another jump to an external cluster containing the actual +code to invoke gc. This is to allow factoring of common gc invocation +sequences. That is to say, we generate: + + f: + testgc + ja L1 % jump if above to L1 + + L1: + jmp L2 + + +After jump chain elimination the 'ja L1' instructions is converted to +'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end +up being implemented in their long form (if L2 is far away) using: + + jbe L3 % jump if below or equal to L3 + jmp L2 + L3: + ... + + +For large compilation units L2 may be far away. + + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/11 13:30:00 EST +Tag: blume-20020311-mltreeeval +Description: + +A functor parameter was missing. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/11 10:30:00 EST +Tag: leunga-20020311-runtime-string0 +Description: + + The representation of the empty string now points to a +legal null terminated C string instead of unit. It is now possible +to convert an ML string into C string with InlineT.CharVector.getData. +This compiles into one single machine instruction. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/10 23:55:00 EST +Tag: leunga-20020310-x86-call +Description: + + Added machine generation for CALL instruction (relative displacement mode) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/08 16:05:00 +Tag: blume-20020308-entrypoints +Description: + +Version number bumped to 110.39.1. NEW BOOTFILES! + +Entrypoints: non-zero offset into a code object where execution should begin. + +- Added the notion of an entrypoint to CodeObj. +- Added reading/writing of entrypoint info to Binfile. +- Made runtime system bootloader aware of entrypoints. +- Use the address of the label of the first function given to mlriscGen + as the entrypoint. This address is currently always 0, but it will + not be 0 once we turn on block placement. +- Removed the linkage cluster code (which was The Other Way(tm) of dealing + with entry points) from mlriscGen. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/07 20:45:00 EST +Tag: leunga-20020307-x86-cmov +Description: + + Bug fixes for CMOVcc on x86. + + 1. Added machine code generation for CMOVcc + 2. CMOVcc is now generated in preference over SETcc on PentiumPro or above. + 3. CMOVcc cannot have an immediate operand as argument. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/03/07 16:15:00 EST +Tag: blume-20020307-controls +Description: + +This is a very large but mostly boring patch which makes (almost) +every tuneable compiler knob (i.e., pretty much everything under +Control.* plus a few other things) configurable via both the command +line and environment variables in the style CM did its configuration +until now. + +Try starting sml with '-h' (or, if you are brave, '-H') + +To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which +implements the underlying generic mechanism. + +The interface to some of the existing such facilities has changed somewhat. +For example, the MLRiscControl module now provides mkFoo instead of getFoo. +(The getFoo interface is still there for backward-compatibility, but its +use is deprecated.) + +The ml-build script passes -Cxxx=yyy command-line arguments through so +that one can now twiddle the compiler settings when using this "batch" +compiler. + +TODO items: + +We should go through and throw out all controls that are no longer +connected to anything. Moreover, we should go through and provide +meaningful (and correct!) documentation strings for those controls +that still are connected. + +Currently, multiple calls to Controls.new are accepted (only the first +has any effect). Eventually we should make sure that every control +is being made (via Controls.new) exactly once. Future access can then +be done using Controls.acc. + +Finally, it would probably be a good idea to use the getter-setter +interface to controls rather than ref cells. For the time being, both +styles are provided by the Controls module, but getter-setter pairs are +better if thread-safety is of any concern because they can be wrapped. + +***************************************** + +One bug fix: The function blockPlacement in three of the MLRISC +backpatch files used to be hard-wired to one of two possibilities at +link time (according to the value of the placementFlag). But (I +think) it should rather sense the flag every time. + +***************************************** + +Other assorted changes (by other people who did not supply a HISTORY entry): + +1. the cross-module inliner now works much better (Monnier) +2. representation of weights, frequencies, and probabilities in MLRISC + changed in preparation of using those for weighted block placement + (Reppy, George) + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/03/07 14:44:24 EST 2002 +Tag: george-20020307-weighted-block-placement + +Tested the weighted block placement optimization on all architectures +(except the hppa) using AMPL to generate the block and edge frequencies. +Changes were required in the machine properties to correctly +categorize trap instructions. There is an MLRISC flag +"weighted-block-placement" that can be used to enable weighted block +placement, but this will be ineffective without block/edge +frequencies (coming soon). + + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/03/05 17:24:48 EST +Tag: george-20020305-linkage-cluster + +In order to support the block placement optimization, a new cluster +is generated as the very first cluster (called the linkage cluster). +It contains a single jump to the 'real' entry point for the compilation +unit. Block placement has no effect on the linkage cluster itself, but +all the other clusters have full freedom in the manner in which they +reorder blocks or functions. + +On the x86 the typical linkage code that is generated is: + ---------------------- + .align 2 + L0: + addl $L1-L0, 72(%esp) + jmp L1 + + + .align 2 + L1: + ---------------------- + +72(%esp) is the memory location for the stdlink register. This +must contain the address of the CPS function being called. In the +above example, it contains the address of L0; before +calling L1 (the real entry point for the compilation unit), it +must contain the address for L1, and hence + + addl $L1-L0, 72(%esp) + +I have tested this on all architectures except the hppa.The increase +in code size is of course negligible + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/03/03 13:20:00 EST +Tag: leunga-20020303-mlrisc-tools + + Added #[ ... ] expressions to mlrisc tools + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/27 12:29:00 EST +Tag: blume-20020227-cdebug +Description: + +- made types in structure C and C_Debug to be equal +- got rid of code duplication (c-int.sml vs. c-int-debug.sml) +- there no longer is a C_Int_Debug (C_Debug is directly derived from C) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/26 12:00:00 EST +Tag: blume-20020226-ffi +Description: + +1. Fixed a minor bug in CM's "noweb" tool: + If numbering is turned off, then truly don't number (i.e., do not + supply the -L option to noweb). The previous behavior was to supply + -L'' -- which caused noweb to use the "default" line numbering scheme. + Thanks to Chris Richards for pointing this out (and supplying the fix). + +2. Once again, I reworked some aspects of the FFI: + + A. The incomplete/complete type business: + + - Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are + gone! + - ML types representing an incomplete type are now *equal* to + ML types representing their corresponding complete types (just like + in C). This is still safe because ml-nlffigen will not generate + RTTI for incomplete types, nor will it generate functions that + require access to such RTTI. But when ML code generated from both + incomplete and complete versions of the C type meet, the ML types + are trivially interoperable. + + NOTE: These changes restore the full generality of the translation + (which was previously lost when I eliminated functorization)! + + B. Enum types: + + - Structure C now has a type constructor "enum" that is similar to + how the "su" constructor works. However, "enum" is not a phantom + type because each "T enum" has values (and is isomorphic to + MLRep.Signed.int). + - There are generic access operations for enum objects (using + MLRep.Signed.int). + - ml-nlffigen will generate a structure E_foo for each "enum foo". + * The structure contains the definition of type "mlrep" (the ML-side + representation type of the enum). Normally, mlrep is the same + as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec", + then mlrep will be defined as a datatype -- thus facilitating + pattern matching on mlrep values. + ("-ec" will be suppressed if there are duplicate values in an + enumeration.) + * Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep + will be generated for each C enum constant xxx. + * Conversion functions m2i and i2m convert between mlrep and + MLRep.Signed.int. (Without "-ec", these functions are identities.) + * Coversion functions c and ml convert between mlrep and "tag enum". + * Access functions (get/set) fetch and store mlrep values. + - By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed + enumerations are merged into one single enumeration represented by + structure E_'. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/02/25 04:45:00 EST +Tag: leunga-20020225-cps-spill + +This is a new implementation of the CPS spill phase. +The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml +In case of problems, replace it with the old file spill.sml + +The current compiler runs into some serious performance problems when +constructing a large record. This can happen when we try to compile a +structure with many items. Even a very simple structure like the following +makes the compiler slow down. + + structure Foo = struct + val x_1 = 0w1 : Word32.int + val x_2 = 0w2 : Word32.int + val x_3 = 0w3 : Word32.int + ... + val x_N = 0wN : Word32.int + end + +The following table shows the compile time, from N=1000 to N=4000, +with the old compiler: + +N +1000 CPS 100 spill 0.04u 0.00s 0.00g + MLRISC ra 0.06u 0.00s 0.05g + (spills = 0 reloads = 0) + TOTAL 0.63u 0.07s 0.21g + +1100 CPS 100 spill 8.25u 0.32s 0.64g + MLRISC ra 5.68u 0.59s 3.93g + (spills = 0 reloads = 0) + TOTAL 14.71u 0.99s 4.81g + +1500 CPS 100 spill 58.55u 2.34s 1.74g + MLRISC ra 5.54u 0.65s 3.91g + (spills = 543 reloads = 1082) + TOTAL 65.40u 3.13s 6.00g + +2000 CPS 100 spill 126.69u 4.84s 3.08g + MLRISC ra 0.80u 0.10s 0.55g + (spills = 42 reloads = 84) + TOTAL 129.42u 5.10s 4.13g + +3000 CPS 100 spill 675.59u 19.03s 11.64g + MLRISC ra 2.69u 0.27s 1.38g + (spills = 62 reloads = 124) + TOTAL 682.48u 19.61s 13.99g + +4000 CPS 100 spill 2362.82u 56.28s 43.60g + MLRISC ra 4.96u 0.27s 2.72g + (spills = 85 reloads = 170) + TOTAL 2375.26u 57.21s 48.00g + +As you can see the old cps spill module suffers from some serious +performance problem. But since I cannot decipher the old code fully, +instead of patching the problems up, I'm reimplementing it +with a different algorithm. The new code is more modular, +smaller when compiled, and substantially faster +(O(n log n) time and O(n) space). Timing of the new spill module: + +4000 CPS 100 spill 0.02u 0.00s 0.00g + MLRISC ra 0.25u 0.02s 0.15g + (spills=1 reloads=3) + TOTAL 7.74u 0.34s 1.62g + +Implementation details: + +As far as I can tell, the purpose of the CPS spill module is to make sure the +number of live variables at any program point (the bandwidth) +does not exceed a certain limit, which is determined by the +size of the spill area. + +When the bandwidth is too large, we decrease the register pressure by +packing live variables into spill records. How we achieve this is +completely different than what we did in the old code. + +First, there is something about the MLRiscGen code generator +that we should be aware of: + +o MLRiscGen performs code motion! + + In particular, it will move floating point computations and + address computations involving only the heap pointer to + their use sites (if there is only a single use). + What this means is that if we have a CPS record construction + statement + + RECORD(k,vl,w,e) + + we should never count the new record address w as live if w + has only one use (which is often the case). + + We should do something similar to floating point, but the transformation + there is much more complex, so I won't deal with that. + +Secondly, there are now two new cps primops at our disposal: + + 1. rawrecord of record_kind option + This pure operator allocates some uninitialized storage from the heap. + There are two forms: + + rawrecord NONE [INT n] allocates a tagless record of length n + rawrecord (SOME rk) [INT n] allocates a tagged record of length n + and initializes the tag. + + 2. rawupdate of cty + rawupdate cty (v,i,x) + Assigns to x to the ith component of record v. + The storelist is not updated. + +We use these new primops for both spilling and increment record construction. + + 1. Spilling. + + This is implemented with a linear scan algorithm (but generalized + to trees). The algorithm will create a single spill record at the + beginning of the cps function and use rawupdate to spill to it, + and SELECT or SELp to reload from it. So both spills and reloads + are fine-grain operations. In contrast, in the old algorithm + "spills" have to be bundled together in records. + + Ideally, we should sink the spill record construction to where + it is needed. We can even split the spill record into multiple ones + at the places where they are needed. But CPS is not a good + representation for global code motion, so I'll keep it simple and + am not attempting this. + + 2. Incremental record construction (aka record splitting). + + Long records with many component values which are simulatenously live + (recall that single use record addresses are not considered to + be live) are constructed with rawrecord and rawupdate. + We allocate space on the heap with rawrecord first, then gradually + fill it in with rawupdate. This is the technique suggested to me + by Matthias. + + Some restrictions on when this is applicable: + 1. It is not a VECTOR record. The code generator currently does not handle + this case. VECTOR record uses double indirection like arrays. + 2. All the record component values are defined in the same "basic block" + as the record constructor. This is to prevent speculative + record construction. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/02/22 01:02:00 EST +Tag: leunga-20020222-mlrisc-tools + +Minor bug fixes in the parser and rewriter + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/02/21 20:20:00 EST +Tag: leunga-20020221-peephole + +Regenerated the peephole files. Some contained typos in the specification +and some didn't compile because of pretty printing bugs in the old version +of 'nowhere'. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/02/19 20:20:00 EST +Tag: leunga-20020219-mlrisc-tools +Description: + + Minor bug fixes to the mlrisc-tools library: + + 1. Fixed up parsing colon suffixed keywords + 2. Added the ability to shut the error messages up + 3. Reimplemented the pretty printer and fixed up/improved + the pretty printing of handle and -> types. + 4. Fixed up generation of literal symbols in the nowhere tool. + 5. Added some SML keywords to to sml.sty + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/19 16:20:00 EST +Tag: blume-20020219-cmffi +Description: + +A wild mix of changes, some minor, some major: + +* All C FFI-related libraries are now anchored under $c: + $/c.cm --> $c/c.cm + $/c-int.cm --> $c/internals/c-int.cm + $/memory.cm --> $c/memory/memory.cm + +* "make" tool (in CM) now treats its argument pathname slightly + differently: + 1. If the native expansion is an absolute name, then before invoking + the "make" command on it, CM will apply OS.Path.mkRelative + (with relativeTo = OS.FileSys.getDir()) to it. + 2. The argument will be passed through to subsequent phases of CM + processing without "going native". In particular, if the argument + was an anchored path, then "make" will not lose track of that anchor. + +* Compiler backends now "know" their respective C calling conventions + instead of having to be told about it by ml-nlffigen. This relieves + ml-nlffigen from one of its burdens. + +* The X86Backend has been split into X86CCallBackend and X86StdCallBackend. + +* Export C_DEBUG and C_Debug from $c/c.cm. + +* C type encoding in ml-nlffi-lib has been improved to model the conceptual + subtyping relationship between incomplete pointers and their complete + counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr -- + with the convention of instantiating 'o with ('t, 'c) obj whenever + the pointer target type is complete. In the incomplete case, 'o + will be instantiated with some "'c iobj" -- a type obtained by + using one of the functors PointerToIncompleteType or PointerToCompleteType. + + Operations that work on both incomplete and complete pointer types are + typed as taking an 'o ptr while operations that require the target to + be known are typed as taking some ('t, 'c) obj ptr. + + voidptr is now a bit "more concrete", namely "type voidptr = void ptr'" + where void is an eqtype without any values. This makes it possible + to work on voidptr values using functions meant to operate on light + incomplete pointers. + +* As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has + been vastly simplified. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/19 10:48:00 EST +Tag: blume-20020219-pqfix +Description: + +Applied Chris Okasaki's bug fix for priority queues. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/15 17:05:00 +Tag: Release_110_39 +Description: + +Last-minute retagging is becoming a tradition... :-( + +This is the working release 110.39. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/15 16:00:00 EST +Tag: Release_110_39-orig +Description: + +Working release 110.39. New bootfiles. + +(Update: There was a small bug in the installer so it wouldn't work +with all shells. So I retagged. -Matthias) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/15 14:17:00 EST +Tag: blume-20020215-showbindings +Description: + +Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially +the latter can be useful for exploring what bindings are available at +the interactive prompt. (The first function returns only the list +of symbols that are really bound, the second prints those but also the +ones that CM's autoloading mechanism knows about.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/15 12:08:00 EST +Tag: blume-20020215-iptrs +Description: + +Two improvements to ml-nlffigen: + + 1. Write files only if they do not exist or if their current contents + do not coincide with what's being written. (That is, avoid messing + with the time stamps unless absolutely necessary.) + + 2. Implement a "repository" mechanism for generated files related + to "incomplete pointer types". See the README file for details. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/14 11:50:00 EST +Tag: blume-20020214-quote +Description: + +Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required +because of the new and improved tag generation scheme. (Thanks to Allen +Leung for pointing it out.) + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/02/14 09:55:27 EST 2002 +Tag: george-20020214-isabelle-bug +Description: + +Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation +of Isabelle on the x86. + +From Allen: +----------- + I've found the problem: + + in ra-core.sml, I use the counter "blocked" to keep track of the + true number of elements in the freeze queue. When the counter goes + to zero, I skip examining the queue. But I've messed up the + bookkeeping in combine(): + + else (); + case !ucol of + PSEUDO => (if !cntv > 0 then + (if !cntu > 0 then blocked := !blocked - 1 else (); + ^^^^^^^^^^^^^^^^^^^^^^^ + moveu := mergeMoveList(!movev, !moveu) + ) + else (); + + combine() is called to coalesce two nodes u and v. + I think I was thinking that if the move counts of u and v are both + greater than zero then after they are coalesced then one node is + removed from the freeze queue. Apparently I was thinking that + both u and v are of low degree, but that's clearly not necessarily true. + + +02/12/2002: + Here's the patch. HOL now compiles. + + I don't know how this impact on performance (compile + time or runtime). This bug caused the RA (especially on the x86) + to go thru the potential spill phase when there are still nodes on the + freeze queue. + + + + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/13 22:40:00 EST +Tag: blume-20020213-fptr-rtti +Description: + +Fixed a bug in ml-nlffigen that was introduced with one of the previous +updates. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/13 16:41:00 EST +Tag: blume-20020213-cmlpq +Description: + +Added new priority queue export symbols (which have just been added to +smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would +not compile and the installer would choke.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/13 16:15:00 EST +Tag: blume-20020213-various +Description: + +1. More tweaks to ml-nlffigen: + + - better internal datastructures (resulting in slight speedup) + - "-match" option requires exact match + - "localized" gensym counters (untagged structs/unions nested within + other structs/unions or within typedefs get a fresh counter; their + tag will be prefixed by a concatenation of their parents' tags) + - bug fixes (related to calculation of transitive closure of types + to be included in the output) + +2. Minor Basis updates: + + - added implementations for List.collate and Option.app + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/11 15:55:00 EST +Tag: blume-20020211-gensym +Description: + +Added a "-gensym" option to command line of ml-nlffigen. This can be +used to specify a "stem" -- a string that is inserted in all "gensym'd" +names (ML structure names that correspond to unnamed C structs, unions, +and enums), so that separate runs of ml-nlffigen do not clash. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/11 12:05:00 EST +Tag: blume-20020211-gensml +Description: + +A quick fix for a problem with GenSML (in the pgraph-util library): +Make generation of toplevel "local" optional. (Strictly speaking, +signature definitions within "local" are not legal SML.) + +Other than that: updates to INSTALL and cm/TODO. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/02/08 15:00:00 EST +Tag: blume-20020208-uniquepid +Description: + +0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!! + +1. The installer (config/install.sh) has gotten smarter: + + - Configuration options are a bit easier to specify now + (in config/targets). + - Bug in recognizing .tar.bz2 files fixed. + - Installer automatically resolves dependencies between + configuration options (e.g., if you ask for eXene, you will + also get cml -- regardless whether you asked for it or not). + - Installer can run in "quieter mode" by setting the environment + variable INSTALL_QUIETLY to "true". "Quieter" does not mean + "completely silent", though. + - Build HashCons library as part of smlnj-lib. + +2. A new scheme for assigning persistent identifiers to compilation + units (and, by extension, to types etc.) has been put into place. + This fixes a long-standing bug where types and even dynamic values + can get internally confused, thereby compromising type safety + (abstraction) and dynamic correctness. See + + http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz + + for an example of how things could go wrong until now. + + The downside of the new scheme is that pids are not quite as + persistent as they used to be: CM will generate a fresh pid + for every compilation unit that it thinks it sees for the first + time. That means that if you compile starting from a clean, fresh + source tree at two different times, you end up with different + binaries. + + Cutoff recompilation, however, has not been compromised because + CM keeps pid information in special caches between runs. + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/02/07 15:34:13 EST 2002 +Tag: +Description: + +Compilers that generate assembly code may produce global labels +whose value is resolved at link time. The various peephole optimization +modules did not take this in account. + +TODO. The Labels.addrOf function should really return an option +type so that clients are forced to deal with this issue, rather +than an exception being raised. + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/02/06 13:55:02 EST +Tag: george-20020206-ra-breakup +Description: + +1. A bug fix from Allen. + + A typo causes extra fstp %st(0)'s to be generated at compensation + edges, which might cause stack underflow traps at runtime. This + occurs in fft where there are extraneous fstps right before the 'into' + trap instruction (in this case they are harmless since none of the + integers overflow.) + +2. Pulled out various utility modules that were embedded in the modules + of the register allocator. I need these modules for other purposes, but + they are not complete enough to put into a library (just yet). +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/31 16:05:00 EST +Tag: blume-20020131-sparc-ccalls +Description: + +1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes) + of extra stack space by mistake. Fixed. + +2. Bug in logic of handling of command-line options in ml-nlffigen fixed. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/01/30 +Tag: leunga-20020130-nowhere-bug-fix +Description: + + MLRISC bug fixes: + 1. Fixed a bindings computation bug in the 'nowhere' program generator tool. + 2. MachineInt.fromString was negating its value. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/29 +Tag: blume-20020129-INSTALL +Description: + +- Added somewhat detailed installation instructions (file INSTALL). +- Fixed curl-detection bug in config/install.sh. +- It is now possible to select the URL getter using the URLGETTER + environment variable: + + not set / "unknown" --> automatic detection (script tries wget, + curl, and lynx) + "wget" / "curl" / "lynx" --> use the specified program (script "knows" + how to properly invoke them) + other --> use $URLGETTER directly, it must take + precisely two command-line arguments + (source URL and destination file name) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/28 +Tag: blume-20020128-sparc-ccalls +Description: + +- Fixed problem with calculation of "used" registers in sparc-c-calls. +- Make use of the allocParam argument in sparc-c-calls. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/28 +Tag: blume-20020128-allocParam +Description: + +John Reppy: Changes c-calls API to accept client-callback for +allocating extra stack space. +me: Corresponding changes to mlriscGen (using a dummy argument that + does not change the current behavior). + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/28 12:00:00 +Tag: Release_110_38 +Description: + +This time for real!!! + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/28 10:56:00 EST +Tag: blume-20020128-retraction +Description: + +0. Retracted earlier 110.38. (The Release_110_38 tag has been replaced + with blume-Release_110_38-retracted.) + +1. Fixed a problem with incorrect rounding modes in real64.sml. + (Thanks to Andrew Mccreight .) + +2. A bug in ml-nlffigen related to the handling of unnamed structs, unions, + and enums fixed. The naming of corresponding ML identifiers should + now be consistent again. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/01/27 +Tag: leunga-20020127-nowhere +Description: + + Added a target called nowhere in the configuration scripts. + Enabling this will build the MLRISC 'nowhere' tool (for translating + programs with where-clauses into legal SML code) during installation. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/25 21:27:00 EST +Tag: blume-Release_110_38-retracted +Description: + +Call it a (working) release! Version is 110.38. Bootfiles are ready. + +README will be added later. + +!!! NOTE: Re-tagged as blume-Release_110_38-retracted. Original tag +(Release_110_38) removed. Reason: Last-minute bug fixes. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/25 +Tag: blume-20020125-ffi +Description: + +A large number of tweaks and improvements to ml-nlffi-lib and +ml-nlffigen: + + - ML represenation types have been streamlined + - getter and setter functions work with concrete values, not abstract + ones where possible + - ml-nlffigen command line more flexible (see README file there) + - some bugs have been fixed (hopefully) + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/01/24 +Tag: george-20020124-risc-ra-interface +Description: + + There is a dramatic simplification in the interface to the + register allocator for RISC architectures as a result of making + parallel copy instructions explicit. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/22 +Tag: blume-20020122-x86-ccalls +Description: + +Bug fix for c-calls on x86 (having to do with how char- and +short-arguments are being handled). + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/21 +Tag: blume-20020121-ff +Description: + +Another day of fiddling with the FFI... + +1. Bug fix/workaround: CKIT does not complain about negative array + dimensions, so ml-nlffigen has to guard itself against this possibility. + (Otherwise a negative dimension would send it into an infinite loop.) + +2. Some of the abstract types (light objects, light pointers, most "base" + types) in structure C are now eqtypes. + +3. Added constructors and test functions for NULL function pointers. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/18 +Tag: blume-20020118-ready-for-new-release +Description: + +Made config/srcarchiveurl point to a new place. (Will provide boot +files shortly.) + +Maybe we christen this to be 110.38? + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/18 +Tag: blume-20020118-more-ffifiddle +Description: + +Today's FFI fiddling: + + - Provided a structure CGetSet with "convenient" versions of C.Get.* and + C.Set.* that use concrete (MLRep.*) arguments and results instead + of abstract ones. + + - Provided word-style bit operations etc. for "int" representation + types in MLRep.SBitops where ranges over Char, Int, Short, + and Long. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/18 +Tag: blume-20020118-use-x86-fp +Description: + +Now that x86-fast-fp seems to be working, I turned it back on again +by default. (Seems to work fine now, even with the FFI.) + +Other than that, I added some documentation about the FFI to +src/ml-nlffigen/README and updated the FFI test examples in +src/ml-nlffi-lib/Tests/*. + +---------------------------------------------------------------------- +Name: Allen Leung +Date: 2002/01/17 +Tag: leunga-20020117-x86-fast-fp-call +Description: + + 1. Fixed a problem with handling return fp values when x86's fast fp + mode is turned on. + + 2. Minor pretty printing fix for cellset. Print %st(0) as %st(0) instead + of %f32. + + 3. Added a constructor INT32lit to the ast of MLRISC tools. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/16 +Tag: blume-20020116-ffifiddle +Description: + +More fiddling with the FFI interface: + + - Make constness 'c instead of rw wherever possible. This eliminates + the need for certain explicit coercions. (However, due to ML's + value polymorphism, there will still be many cases where explicit + coercions are necessary. Phantom types are not the whole answer + to modeling a subtyping relationship in ML.) + + - ro/rw coersions for pointers added. (Avoids the detour through */&.) + + - "printf" test example added to src/ml-nlffi-lib/Tests. (Demonstrates + clumsy workaround for varargs problem.) + +---------------------------------------------------------------------- +Name: Lal George +Date: 2002/01/15 +Tag: +Description: + +1. Since COPY instructions are no longer native to the architecture, + a generic functor can be used to implement the expandCopies function. + +2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a + TEXT segment. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/15 +Tag: blume-20020115-ffiupdates +Description: + +1. Fix for bug resulting in single-precision float values being returned + incorrectly from FFI calls. + +2. Small modifications to C FFI API: + + - memory-allocation routines return straight objects (no options) + and raise an exception in out-of-memory situations + - unsafe extensions to cast between function pointers and pointers + from/to ints + - added structure C_Debug as an alternative to structure C where + pointer-dereferencing (|*| and |*!) always check for null-pointers + - added open_lib' to DynLinkage; open_lib' works like open_lib + but also takes a (possibly empty) list of existing library handles + that the current library depends on + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2002/01/10 +Tag: blume-20020110-newffigen +Description: + +1. Updates to portable graph code. + +2. Major update to ml-nlffigen and ml-nlffi-lib. Things are much + more scalable now so that even huge interfaces such as the one + for GTK compile in finite time and space. :-) + See src/ml-nlffigen/README for details on what's new. + +---------------------------------------------------------------------- +Name: Lal George +Date: 2001/01/09 14:31:35 EST 2002 +Tag: george-20011206-rm-native-copy +Description: + + Removed the native COPY and FCOPY instructions + from all the architectures and replaced it with the + explicit COPY instruction from the previous commit. + + It is now possible to simplify many of the optimizations + modules that manipulate copies. This has not been + done in this change. + +---------------------------------------------------------------------- +Name: Lal George +Date: 2001/12/06 16:50:13 EST 2001 +Tag: george-20011206-mlrisc-instruction +Description: + +Changed the representation of instructions from being fully abstract +to being partially concrete. That is to say: + + from + type instruction + + to + type instr (* machine instruction *) + + datatype instruction = + LIVE of {regs: C.cellset, spilled: C.cellset} + | KILL of {regs: C.cellset, spilled: C.cellset} + | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list} + | ANNOTATION of {i: instruction, a: Annotations.annotation} + | INSTR of instr + +This makes the handling of certain special instructions that appear on +all architectures easier and uniform. + +LIVE and KILL say that a list of registers are live or killed at the +program point where they appear. No spill code is generated when an +element of the 'regs' field is spilled, but the register is moved to +the 'spilled' (which is present, more for debugging than anything else). + +LIVE replaces the (now deprecated) DEFFREG instruction on the alpha. +We used to generate: + + DEFFREG f1 + f1 := f2 + f3 + trapb + +but now generate: + + f1 := f2 + f3 + trapb + LIVE {regs=[f1,f2,f3], spilled=[]} + +Furthermore, the DEFFREG (hack) required that all floating point instruction +use all registers mentioned in the instruction. Therefore f1 := f2 + f3, +defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting +in a cleaner alpha implementation. (Hopefully, intel will not get rid of +this architecture). + +COPYXXX is intended to replace the parallel COPY and FCOPY available on +all the architectures. This will result in further simplification of the +register allocator that must be aware of them for coalescing purposes, and +will also simplify certain aspects of the machine description that provides +callbacks related to parallel copies. + +ANNOTATION should be obvious, and now INSTR represents the honest to God +machine instruction set! + +The /instructions/Instr.sml files define certain utility +functions for making porting easier -- essentially converting upper case +to lower case. All machine instructions (of type instr) are in upper case, +and the lower case form generates an MLRISC instruction. For example on +the alpha we have: + + datatype instr = + LDA of {r:cell, b:cell, d:operand} + | ... + + val lda : {r:cell, b:cell, d:operand} -> instruction + ... + +where lda is just (INSTR o LDA), etc. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2001/11/22 21:40:00 EST +Tag: Release_110_37 +Description: + +Release 110.37. This time for real. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2001/11/21 16:35:00 EST +Tag: blume-20011121-foot-in-mouth +Description: + +Removed the "Release_110_37" tag because of a serious bug. +This will be re-tagged once the bug is fixed. + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2001/11/21 16:14:00 EST +Tag: blume-20011121-forgottenfile +Description: + +Forgot to add a file. (Just a .tex-file -- part of +the CM manual source.) + +---------------------------------------------------------------------- +Name: Matthias Blume +Date: 2001/11/21 16:10:00 EST +Tag: blume-20011121-invalid_110_37 +Description: + +Note: I removed the original tag "Release_110_37" from this commit + because we found a serious bug in all non-x86 backends. + - Matthias + +1. Modifications to the SML/NJ code generator and to the runtime system + so that code object name strings are directly inserted into code + objects at code generation time. The only business the runtime system + has with this is now to read the name strings on occasions. + (The encoding of the name string has also changed somewhat.) + +2. CM now implements a simple "set calculus" for specifying export lists. + In particular, it is now possible to refer to the export lists of + other libraries/groups/sources and form unions as well as differences. + See the latest CM manual for details. + +3. An separate notion of "proxy" libraries has again be eliminated from + CM's model. (Proxy libraries are now simply a special case of using + the export list calculus.) + +4. Some of the existing libraries now take advantage of the new set + calculus. + (Notice that not all libraries have been converted because some + of the existing .cm-files are supposed to be backward compatible + with 110.0.x.) + +5. Some cleanup in stand-alone programs. (Don't use "exnMessage" -- use + "General.exnMessage"! The former relies on a certain hook to be + initialized, and that often does not happen in the stand-alone case.) + +---------------------------------------------------------------------- +Name: Lal George +Date: 2001/11/21 13:56:18 EST +Tag: george-2001121-pseudo-ops +Description: + + Implemented a complete redesign of MLRISC pseudo-ops. Now there + ought to never be any question of incompatabilities with + pseudo-op syntax expected by host assemblers. + + For now, only modules supporting GAS syntax are implemented + but more should follow, such as MASM, and vendor assembler + syntax, e.g. IBM as, Sun as, etc. + +---------------------------------------------------------------------- Name: Matthias Blume Date: 2001/11/14 11:52:00 EST Tag: blume-20011114-srcname @@ -194,7 +3401,6 @@ ---------------------------------------------------------------------- Name: Matthias Blume ->>>>>>> 1.169 Date: 2001/09/18 15:35:00 EDT Tag: blume-20010918-readme11036 Description:
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The output has ended thus: s Blume ->>>>>>> 1.169 Date: 2001/09/18 15:35:00 EDT Tag: blume-20010918-readme11036 Description: