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llvm-6502/lib/Target/Alpha
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Chris Lattner d615ded96e Use cute tblgen tricks to make zap handling more powerful. Specifically, 
when the dag combiner simplifies an and mask, notice this and allow those bits
to be missing from the zap mask.

This compiles Alpha/zapnot4.ll into:

        sll $16,3,$0
        zapnot $0,3,$0
        ret $31,($26),1

instead of:

        ldah $0,1($31)
        lda $0,-8($0)
        sll $16,3,$1
        and $1,$0,$0
        ret $31,($26),1

It would be *really* nice to replace the hunk of code in the
AlphaISelDAGToDAG.cpp file that matches (and (srl (x, C), c2) into
(SRL (ZAPNOTi)) with a similar pattern, but I've spent enough time poking
at alpha.  Make andrew will do this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30875 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-11 05:13:56 +00:00
..
.cvsignore
Alpha.h A pass to remove the worst of the replay trap offenders, and as a bonus, align basic blocks when it is free to do so 2006-09-18 19:44:29 +00:00
Alpha.td
AlphaAsmPrinter.cpp Pass the MachineFunction into EmitJumpTableInfo. 2006-10-05 03:01:21 +00:00
AlphaCodeEmitter.cpp Resolve BB references with relocation. 2006-07-27 18:21:10 +00:00
AlphaInstrFormats.td
AlphaInstrInfo.cpp
AlphaInstrInfo.h
AlphaInstrInfo.td Use cute tblgen tricks to make zap handling more powerful. Specifically, 2006-10-11 05:13:56 +00:00
AlphaISelDAGToDAG.cpp Use cute tblgen tricks to make zap handling more powerful. Specifically, 2006-10-11 05:13:56 +00:00
AlphaISelLowering.cpp Jimptables working again on alpha. 2006-10-11 04:29:42 +00:00
AlphaISelLowering.h Jimptables working again on alpha. 2006-10-11 04:29:42 +00:00
AlphaJITInfo.cpp Resolve BB references with relocation. 2006-07-27 18:21:10 +00:00
AlphaJITInfo.h Completely rearchitect the interface between targets and the pass manager. 2006-09-04 04:14:57 +00:00
AlphaLLRP.cpp Account for pseudo-ops correctly 2006-09-20 20:08:52 +00:00
AlphaRegisterInfo.cpp Completely eliminate def&use operands. Now a register operand is EITHER a 2006-09-05 02:31:13 +00:00
AlphaRegisterInfo.h
AlphaRegisterInfo.td Constify some methods. Patch provided by Anton Vayvod, thanks! 2006-08-17 22:00:08 +00:00
AlphaRelocations.h
AlphaSchedule.td
AlphaSubtarget.cpp
AlphaSubtarget.h
AlphaTargetAsmInfo.cpp Set the jt section 2006-10-06 22:52:33 +00:00
AlphaTargetAsmInfo.h Break out target asm info into separate files. 2006-09-07 22:05:02 +00:00
AlphaTargetMachine.cpp Jimptables working again on alpha. 2006-10-11 04:29:42 +00:00
AlphaTargetMachine.h Jimptables working again on alpha. 2006-10-11 04:29:42 +00:00
Makefile
README.txt This entry is done. switched to the gcc way of doing things. 2006-10-11 01:48:03 +00:00

README.txt 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Fix Ordered/Unordered FP stuff