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LLVM backend for 6502
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aa43e9f73b
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Chris Lattner aa43e9f73b Fix a bug which caused us to never be able to use signed comparisons for 
equality comparisons of a constant.  This allows us to codegen the 'sintzero'
loop in PR1288 as:

LBB1_1: ;cond_next
        li r4, 0
        addi r2, r2, 1
        stw r4, 0(r3)
        addi r3, r3, 4
        cmpwi cr0, r2, -1
        bne cr0, LBB1_1 ;cond_next

instead of:

LBB1_1: ;cond_next
        addi r2, r2, 1
        li r4, 0
        xoris r5, r2, 65535
        stw r4, 0(r3)
        addi r3, r3, 4
        cmplwi cr0, r5, 65535
        bne cr0, LBB1_1 ;cond_next

This implements CodeGen/PowerPC/compare-simm.ll, and also cuts 74
instructions out of kc++.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35590 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02 05:59:42 +00:00
autoconf For PR1283: 2007-03-29 15:37:57 +00:00
docs bwsap -> bswap 2007-04-02 02:25:19 +00:00
examples Revert last patch. The examples build now. 2007-03-06 17:26:14 +00:00
include add a helper function. 2007-04-02 05:41:00 +00:00
lib Fix a bug which caused us to never be able to use signed comparisons for 2007-04-02 05:59:42 +00:00
projects avoid collision with /usr/bin/sample if this ever gets installed. 2007-02-18 03:03:41 +00:00
runtime crtend is only for llvm-gcc3, remove it. 2007-02-23 19:34:09 +00:00
test new testcase 2007-04-02 05:57:59 +00:00
tools Regenerate 2007-04-02 02:08:35 +00:00
utils For PR1297: 2007-04-01 07:20:02 +00:00
win32 Unbreak VC++ build. 2007-04-01 18:58:22 +00:00
Xcode Update project 2007-01-29 18:45:08 +00:00
.cvsignore Add llvm.spec, a generated file. 2006-10-18 19:23:56 +00:00
configure Regenerate for PR1283 fix. 2007-03-29 15:38:33 +00:00
CREDITS.TXT Add Roman to credits 2007-03-21 21:45:25 +00:00
LICENSE.TXT remove these. 2007-02-25 02:28:21 +00:00
llvm.spec.in Minor technical correction in documentation. 2006-08-21 01:58:57 +00:00
Makefile don't build runtime for now, ever 2007-03-29 18:14:00 +00:00
Makefile.common Update comments to reflect new variable names. Patch contributed by 2005-02-14 16:02:19 +00:00
Makefile.config.in For PR789: 2007-03-29 19:05:44 +00:00
Makefile.rules For PR789: 2007-03-29 19:05:44 +00:00
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README.txt 

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