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[smlnj] Log of /sml/trunk/src/MLRISC/Tools/FakeSMLAst
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Log of /sml/trunk/src/MLRISC/Tools/FakeSMLAst

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(Current path doesn't exist after revision 2125)

Revision 1079 - Directory Listing
Modified Wed Feb 20 01:16:15 2002 UTC (17 years, 6 months ago) by leunga
    Minor bug fixes to the mlrisc-tools library

Revision 1025 - Directory Listing
Modified Thu Jan 17 20:31:51 2002 UTC (17 years, 7 months ago) by leunga
     Fixed a problem with the handling of CALLs in x86's "fast fp" mode.

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:

	type instruction

	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:

	f1 := f2 + f3

but now generate:

	f1 := f2 + f3
	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 974 - Directory Listing
Modified Sun Oct 28 03:29:04 2001 UTC (17 years, 9 months ago) by leunga

     Fixed parsing of <pat> : <ty> and <exp> : <ty>

Revision 973 - Directory Listing
Modified Sun Oct 28 00:44:05 2001 UTC (17 years, 9 months ago) by leunga

   Improved pretty printing of sml ast

Revision 935 - Directory Listing
Modified Wed Sep 19 20:14:52 2001 UTC (17 years, 11 months ago) by george
Installed patch from Allen to track compiler
environment changes that affect MLRISC/Tools.

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 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 744 - Directory Listing
Added 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

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