Diff of /sml/trunk/HISTORY

Parent Directory | Revision Log | Patch

	revision 878, Wed Jul 18 17:43:27 2001 UTC	revision 879, Thu Jul 19 18:59:38 2001 UTC
#	Line 14	Line 14
14
15	----------------------------------------------------------------------	----------------------------------------------------------------------
16	Name: Matthias Blume	Name: Matthias Blume
17		Date: 2001/07/19 15:00:00 EDT
18		Tag: blume-20010719-libreorg
19		Description:
20
21		This update puts together a fairly extensive but straightforward change
22		to the way the libraries that implement the interactive system are
23		organized:
24
25		The biggest change is the elimination of structure Compiler.  As a
26		replacement for this structure, there is now a CM library
27		(known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
28		that exports all the substructures of the original structure Compiler
29		directly.  So instead of saying Compiler.Foo.bar one now simply
30		says Foo.bar.  (The CM libraries actually export a collection of
31		structures that is richer than the collection of substructures of
32		structure Compiler.)
33
34		To make the transition smooth, there is a separate library called
35		$smlnj/compiler/compiler.cm which puts together and exports the
36		original structure Compiler (or at least something very close to it).
37
38		There are five members of the original structure Compiler
39		that are not exported directly but which instead became members
40		of a new structure Backend (described by signature BACKEND).  These are:
41		structure Profile (: PROFILE), structure Compile (: COMPILE), structure
42		Interact (: INTERACT), structure Machine (: MACHINE), and val
43		architecture (: string).
44
45		Structure Compiler.Version has become structure CompilerVersion.
46
47		Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
48		by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
49		or x86, respectively.
50		Each of these exports the same frontend structures that
51		$smlnj/compiler.cm exports.  But they do not have a structure Backend
52		and instead export some structure <Arch>Backend where <Arch> is Alpha32,
53		Hppa, PPC, Sparc, or X86, respectively.
54
55		Library $smlnj/compiler/all.cm exports the union of the exports of
56		$smlnj/compiler/<arch>.cm
57
58		There are no structures <Arch>Compiler anymore, use
59		$smlnj/compiler/<arch>.cm instead.
60
61		Library host-compiler-0.cm is gone.  Instead, the internal library
62		that instantiates CM is now called cm0.cm.  Selection of the host
63		compiler (backend) is no longer done here but. (Responsibility for it
64		now lies with $smlnj/compiler/current.cm.  This seems to be more
65		logical.)
66
67		Many individual files have been moved or renamed.  Some files have
68		been split into multiple files, and some "dead" files have been deleted.
69
70		Aside from these changes to library organization, there are also changes
71		to the way the code itself is organized:
72
73		Structure Binfile has been re-implemented in such a way that it no
74		longer needs any knowledge of the compiler.  It exclusively deals
75		with the details of binfile layout.  It no longer invokes the
76		compiler (for the purpose of creating new prospective binfile
77		content), and it no longer has any knowledge of how to interpret
78		pickles.
79
80		Structure Compile (: COMPILE) has been stripped down to the bare
81		essentials of compilation.  It no longer deals with linking/execution.
82		The interface has been cleaned up considerably.
83
84		Utility routines for dealing with linking and execution have been
85		moved into their own substructures.
86
87		(The ultimate goal of these changes is to provide a light-weight
88		binfile loader/linker (at least for, e.g., stable libraries) that
89		does not require CM or the compiler to be present.)
90
91		CM documentation has been updated to reflect the changes to library
92		organization.
93
94		----------------------------------------------------------------------
95		Name: Matthias Blume
96	Date: 2001/07/10 17:30:00 EDT	Date: 2001/07/10 17:30:00 EDT
97	Tag: Release_110_34	Tag: Release_110_34
98	Description:	Description:

---

Colored Diff Long Colored Diff Unidiff Context Diff Side by Side

Legend: Removed from v.878   changed lines   Added in v.879

---

root@smlnj-gforge.cs.uchicago.edu	ViewVC Help
Powered by ViewVC 1.0.0