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[smlnj] Log of /sml/trunk/src/MLRISC/cm
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Log of /sml/trunk/src/MLRISC/cm

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(Current path doesn't exist after revision 2125)

Revision 1005 - Directory Listing
Modified Sat Dec 8 07:24:04 2001 UTC (20 years, 9 months ago) by leunga

    Updated peephole modules to match latest MLTREE and instruction

Revision 1003 - Directory Listing
Modified Fri Dec 7 02:45:32 2001 UTC (20 years, 9 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 991 - Directory Listing
Modified Thu Nov 22 14:25:12 2001 UTC (20 years, 10 months ago) by george
  Fixed a bug on non-x86 architectures related to backpatching
  and the new pseudo-ops.

Revision 984 - Directory Listing
Modified Wed Nov 21 19:00:08 2001 UTC (20 years, 10 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 959 - Directory Listing
Modified Fri Oct 12 21:21:41 2001 UTC (20 years, 11 months ago) by george
X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
Changes from Allen.

Revision 942 - Directory Listing
Modified Thu Sep 27 23:40:38 2001 UTC (21 years ago) by george
 removed ir.cm from RA.cm

Revision 941 - Directory Listing
Modified Thu Sep 27 21:24:02 2001 UTC (21 years ago) by jhr
  Commented out mention of ir.cm, which is probably obsolete.

Revision 936 - Directory Listing
Modified Thu Sep 20 19:47:11 2001 UTC (21 years ago) by george
Updated input to PERL scripts used to generate
MLRISC cm files.

Revision 933 - Directory Listing
Modified Wed Sep 19 19:31:19 2001 UTC (21 years ago) by george

Revision 924 - Directory Listing
Modified Fri Sep 14 15:13:26 2001 UTC (21 years ago) by jhr
Added Allen's CFG fixes

Revision 909 - Directory Listing
Modified Fri Aug 24 17:48:53 2001 UTC (21 years, 1 month ago) by george
removed clusters from MLRISC

Revision 899 - Directory Listing
Modified Mon Aug 13 21:14:31 2001 UTC (21 years, 1 month ago) by jhr
  More CellsBasis changes for files not used by SML/NJ compiler.

Revision 889 - Directory Listing
Modified Thu Jul 19 20:35:20 2001 UTC (21 years, 2 months ago) by george
Substantial simplification in the CELLS interface

Revision 840 - Directory Listing
Modified Fri Jun 15 19:05:19 2001 UTC (21 years, 3 months ago) by blume
c-calls (and NLFFI) implementation for Sparc

Revision 823 - Directory Listing
Modified Tue May 8 21:25:15 2001 UTC (21 years, 4 months ago) by george
omit frame pointer optimization

Revision 815 - Directory Listing
Modified Fri May 4 05:09:10 2001 UTC (21 years, 4 months ago) by leunga

    Moby related MLRISC changes

Revision 797 - Directory Listing
Modified Fri Mar 16 00:00:17 2001 UTC (21 years, 6 months ago) by leunga

   x86 optimizations for x := x op y where x is a memory location.

Revision 796 - Directory Listing
Modified Tue Mar 6 00:04:33 2001 UTC (21 years, 6 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 (21 years, 8 months ago) by leunga

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

Revision 771 - Directory Listing
Modified Sat Dec 30 13:06:09 2000 UTC (21 years, 9 months ago) by blume
merging changes from private branch

Revision 761 - Directory Listing
Modified Sat Dec 23 05:37:37 2000 UTC (21 years, 9 months ago) by george
infinite precision in MLRISC

Revision 744 - Directory Listing
Added Fri Dec 8 04:11:42 2000 UTC (21 years, 9 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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