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[smlnj] Log of /sml/trunk/src/MLRISC/sparc/instructions
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Log of /sml/trunk/src/MLRISC/sparc/instructions

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Sticky Revision:
(Current path doesn't exist after revision 2125)

Revision 1133 - Directory Listing
Modified Tue Mar 12 03:56:23 2002 UTC (17 years, 5 months ago) by george
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.

Revision 1125 - Directory Listing
Modified Thu Mar 7 21:04:13 2002 UTC (17 years, 5 months ago) by jhr
  Changed representation of probabilities and frequencies.

Revision 1124 - Directory Listing
Modified Thu Mar 7 19:49:22 2002 UTC (17 years, 5 months ago) by george
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).

Revision 1121 - Directory Listing
Modified Wed Mar 6 19:58:56 2002 UTC (17 years, 5 months ago) by blume
fixed downstream problems caused by those Freq type change in MLRISC

Revision 1085 - Directory Listing
Modified Fri Feb 22 00:15:55 2002 UTC (17 years, 5 months ago) by leunga
    Regenerated these files.  They didn't compile.

Revision 1082 - Directory Listing
Modified Thu Feb 21 18:50:56 2002 UTC (17 years, 5 months ago) by jhr
  Changed specification of negateConditional.

Revision 1055 - Directory Listing
Modified Thu Feb 7 20:38:59 2002 UTC (17 years, 6 months ago) by george
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.

Revision 1033 - Directory Listing
Modified Thu Jan 24 05:45:18 2002 UTC (17 years, 6 months ago) by george
   There is a dramatic simplification in the interface to the
   register allocator for RISC architectures as a result of making
   parallel copy instructions explicit.

Revision 1016 - Directory Listing
Modified Tue Jan 15 23:10:06 2002 UTC (17 years, 7 months ago) by george
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.

Revision 1009 - Directory Listing
Modified Wed Jan 9 19:44:22 2002 UTC (17 years, 7 months ago) by george
	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.

Revision 1005 - Directory Listing
Modified Sat Dec 8 07:24:04 2001 UTC (17 years, 8 months ago) by leunga

    Updated peephole modules to match latest MLTREE and instruction
    representation.

Revision 1003 - Directory Listing
Modified Fri Dec 7 02:45:32 2001 UTC (17 years, 8 months ago) by george
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 <arch>/instructions/<arch>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.

Revision 999 - Directory Listing
Modified Tue Nov 27 06:28:37 2001 UTC (17 years, 8 months ago) by leunga

1. Made the stuff in MLRISC/Tools compile with the new pseudo ops changes.
2. Packaged the stuff in MLRISC/Tools as a library during installation.

Revision 984 - Directory Listing
Modified Wed Nov 21 19:00:08 2001 UTC (17 years, 9 months ago) by george
  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.

Revision 958 - Directory Listing
Modified Fri Oct 12 03:54:43 2001 UTC (17 years, 10 months ago) by george
The representation of a program point never expected to see more
than 65536 instructions in a basic block!

Revision 933 - Directory Listing
Modified Wed Sep 19 19:31:19 2001 UTC (17 years, 11 months ago) by george
  cleanup

Revision 909 - Directory Listing
Modified Fri Aug 24 17:48:53 2001 UTC (17 years, 11 months ago) by george
removed clusters from MLRISC

Revision 889 - Directory Listing
Modified Thu Jul 19 20:35:20 2001 UTC (18 years, 1 month ago) by george
Substantial simplification in the CELLS interface

Revision 840 - Directory Listing
Modified Fri Jun 15 19:05:19 2001 UTC (18 years, 2 months ago) by blume
c-calls (and NLFFI) implementation for Sparc

Revision 839 - Directory Listing
Modified Thu Jun 7 20:28:44 2001 UTC (18 years, 2 months ago) by blume
several internal changes related to C calls

Revision 823 - Directory Listing
Modified Tue May 8 21:25:15 2001 UTC (18 years, 3 months ago) by george
omit frame pointer optimization

Revision 796 - Directory Listing
Modified Tue Mar 6 00:04:33 2001 UTC (18 years, 5 months ago) by leunga

   Support for alternative control-flow, exception handlers added.

Revision 775 - Directory Listing
Modified Fri Jan 12 01:17:51 2001 UTC (18 years, 7 months ago) by leunga

    Merging the types labexp and mltree.
    tag leunga-20010111-labexp=mltree

Revision 752 - Directory Listing
Modified Fri Dec 8 23:32:37 2000 UTC (18 years, 8 months ago) by leunga

    Slight improvements to a code generator tool.

Revision 745 - Directory Listing
Modified Fri Dec 8 04:14:08 2000 UTC (18 years, 8 months ago) by leunga

    Forgot these...

Revision 744 - Directory Listing
Modified Fri Dec 8 04:11:42 2000 UTC (18 years, 8 months ago) by leunga

   A CVS update record!

   Changed type cell from int to datatype, and numerous other changes.
   Affect every client of MLRISC.  Lal says this can be bootstrapped on all
   machines.  See smlnj/HISTORY for details.

   Tag:  leunga-20001207-cell-monster-hack

Revision 657 - Directory Listing
Modified Fri Jun 9 05:20:54 2000 UTC (19 years, 2 months ago) by leunga

     None of these changes should affect SML/NJ.  See HISTORY file for details.
     CVS Tag=leunga-20000609-various

Revision 651 - Directory Listing
Modified Thu Jun 1 18:34:03 2000 UTC (19 years, 2 months ago) by monnier
bring revisions from the vendor branch to the trunk

Revision 624 - Directory Listing
Modified Fri Apr 21 03:06:21 2000 UTC (19 years, 4 months ago) by leunga

   This update synchronizes my repository with Yale's.  Most of these
changes are related to C--, Moby, and my optimizations.  It should have
little impact on SML/NJ.

   CVS tag leunga-20000420-ssa-c---stuff

Revision 606 - Directory Listing
Modified Sun Apr 9 23:10:59 2000 UTC (19 years, 4 months ago) by leunga

   Assembly fix for x86 and other miscellaneous changes to MLRISC

Revision 601 - Directory Listing
Modified Thu Apr 6 04:38:14 2000 UTC (19 years, 4 months ago) by leunga

    New peephole code, improvements to x86 instruction selection, and
    fixes for SSA and the machine description tool.

    CVS tag=leunga-20000406-peephole-x86-SSA

Revision 555 - Directory Listing
Modified Fri Mar 3 16:10:30 2000 UTC (19 years, 5 months ago) by george
lal-20000303-new mltree -- take II

Revision 545 - Directory Listing
Modified Thu Feb 24 13:56:44 2000 UTC (19 years, 5 months ago) by george
  Changes to MLTREE

Revision 499 - Directory Listing
Modified Tue Dec 7 15:44:50 1999 UTC (19 years, 8 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r498,
which included commits to RCS files with non-trunk default branches.

Revision 470 - Directory Listing
Modified Wed Nov 10 22:42:52 1999 UTC (19 years, 9 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r469,
which included commits to RCS files with non-trunk default branches.

Revision 430 - Directory Listing
Modified Wed Sep 8 09:47:00 1999 UTC (19 years, 11 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r429,
which included commits to RCS files with non-trunk default branches.

Revision 427 - Directory Listing
Modified Wed Sep 8 09:40:08 1999 UTC (19 years, 11 months ago) by monnier
Initial revision

Revision 414 - Directory Listing
Modified Fri Sep 3 00:30:34 1999 UTC (19 years, 11 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r413,
which included commits to RCS files with non-trunk default branches.

Revision 412 - Directory Listing
Modified Fri Sep 3 00:25:03 1999 UTC (19 years, 11 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r411,
which included commits to RCS files with non-trunk default branches.

Revision 246 - Directory Listing
Modified Sat Apr 17 18:47:12 1999 UTC (20 years, 4 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r245,
which included commits to RCS files with non-trunk default branches.

Revision 244 - Directory Listing
Modified Sat Apr 17 18:41:51 1999 UTC (20 years, 4 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r243,
which included commits to RCS files with non-trunk default branches.

Revision 240 - Directory Listing
Modified Sat Apr 17 18:29:24 1999 UTC (20 years, 4 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r239,
which included commits to RCS files with non-trunk default branches.

Revision 232 - Directory Listing
Modified Sat Apr 17 18:14:18 1999 UTC (20 years, 4 months ago) by monnier
This commit was generated by cvs2svn to compensate for changes in r231,
which included commits to RCS files with non-trunk default branches.

Revision 225 - Directory Listing
Added Sat Apr 17 17:09:01 1999 UTC (20 years, 4 months ago) by monnier
Initial revision

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