David Majnemer 10db94fa84 InstCombine: FoldGEPICmp shouldn't change sign of base pointer comparison ... Changing the sign when comparing the base pointer would introduce all sorts of unexpected things like: %gep.i = getelementptr inbounds [1 x i8]* %a, i32 0, i32 0 %gep2.i = getelementptr inbounds [1 x i8]* %b, i32 0, i32 0 %cmp.i = icmp ult i8* %gep.i, %gep2.i %cmp.i1 = icmp ult [1 x i8]* %a, %b %cmp = icmp ne i1 %cmp.i, %cmp.i1 ret i1 %cmp into: %cmp.i = icmp slt [1 x i8]* %a, %b %cmp.i1 = icmp ult [1 x i8]* %a, %b %cmp = xor i1 %cmp.i, %cmp.i1 ret i1 %cmp By preserving the original sign, we now get: ret i1 false This fixes PR16483. llvm-svn: 185259		2013-06-29 10:28:04 +00:00
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CMakeLists.txt	Tidy up a bit. No functional change.	2013-04-05 21:20:12 +00:00
InstCombine.h	Reapply with r182909 with a fix to the calculation of the new indices for	2013-05-31 00:59:42 +00:00
InstCombineAddSub.cpp	In InstCombine{AddSub,MulDivRem} convert APFloat.isFiniteNonZero() && !APFloat.isDenormal => APFloat.isNormal.	2013-06-26 23:17:31 +00:00
InstCombineAndOrXor.cpp	Remove unneeded cast<>.	2013-06-06 00:49:57 +00:00
InstCombineCalls.cpp	Fix using arg_end() - arg_begin() instead of arg_size()	2013-06-28 00:25:40 +00:00
InstCombineCasts.cpp	InstCombine: Don't claim to be able to evaluate any shl in a zexted type.	2013-05-10 16:26:37 +00:00
InstCombineCompares.cpp	InstCombine: FoldGEPICmp shouldn't change sign of base pointer comparison	2013-06-29 10:28:04 +00:00
InstCombineLoadStoreAlloca.cpp	Tidy up a bit. No functional change.	2013-04-05 21:20:12 +00:00
InstCombineMulDivRem.cpp	InstCombine: Be more agressive optimizing 'udiv' instrs with 'select' denoms	2013-06-29 08:40:07 +00:00
InstCombinePHI.cpp	Tidy up a bit. No functional change.	2013-04-05 21:20:12 +00:00
InstCombineSelect.cpp	Revert r164763 because it introduces new shuffles.	2013-05-06 02:39:09 +00:00
InstCombineShifts.cpp	Revert r174152. The shift amount may overflow and in that case this transformation is illegal.	2013-02-01 07:59:33 +00:00
InstCombineSimplifyDemanded.cpp	InstCombine: Don't just copy known bits from the first operand of an srem.	2013-05-09 16:32:32 +00:00
InstCombineVectorOps.cpp	Delete dead safety check.	2013-06-03 23:15:20 +00:00
InstCombineWorklist.h	Remove trailing spaces.	2013-01-14 23:16:36 +00:00
InstructionCombining.cpp	Add ArrayRef constructor from None, and do the cleanups that this constructor enables	2013-05-05 00:40:33 +00:00
LLVMBuild.txt
Makefile