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e233e19ac6
llvm/lib/Transforms/InstCombine
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Matthias Braun e233e19ac6 InstCombine: Move Sub->Xor rule from SimplifyDemanded to InstCombine 
The rule that turns a sub to xor if the LHS is 2^n-1 and the remaining bits
are known zero, does not use the demanded bits at all: Move it to the
normal InstCombine code path.

Differential Revision: http://reviews.llvm.org/D9417

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236268 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-30 22:04:26 +00:00
..
CMakeLists.txt Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects. 2015-02-11 03:28:02 +00:00
InstCombineAddSub.cpp InstCombine: Move Sub->Xor rule from SimplifyDemanded to InstCombine 2015-04-30 22:04:26 +00:00
InstCombineAndOrXor.cpp [ConstantRange] Split makeICmpRegion in two. 2015-03-18 00:41:24 +00:00
InstCombineCalls.cpp [x86] instcombine more cases of insertps into a shufflevector 2015-04-25 20:55:25 +00:00
InstCombineCasts.cpp [InstCombine] Create zero constants on demand. 2015-04-18 16:52:08 +00:00
InstCombineCompares.cpp Subtraction is not commutative. Fixes PR23212! 2015-04-13 19:17:37 +00:00
InstCombineInternal.h [InstCombine] Refactor out OptimizeOverflowCheck. NFCI. 2015-04-08 04:27:22 +00:00
InstCombineLoadStoreAlloca.cpp [CallSite] Make construction from Value* (or Instruction*) explicit. 2015-04-10 14:50:08 +00:00
InstCombineMulDivRem.cpp [InstCombine] (mul nsw 1, INT_MIN) != (shl nsw 1, 31) 2015-04-18 04:41:30 +00:00
InstCombinePHI.cpp [opaque pointer type] Start migrating GEP creation to explicitly specify the pointee type 2015-03-14 01:53:18 +00:00
InstCombineSelect.cpp [InstCombine] Add new rule for MIN(MAX(~A, ~B), ~C) et. al. 2015-04-30 04:56:04 +00:00
InstCombineShifts.cpp DataLayout is mandatory, update the API to reflect it with references. 2015-03-10 02:37:25 +00:00
InstCombineSimplifyDemanded.cpp InstCombine: Move Sub->Xor rule from SimplifyDemanded to InstCombine 2015-04-30 22:04:26 +00:00
InstCombineVectorOps.cpp [InstCombine] Use DataLayout to determine vector element width 2015-04-03 20:18:40 +00:00
InstructionCombining.cpp Limiting gep merging to fix the performance problem described in 2015-04-21 23:02:15 +00:00
LLVMBuild.txt Update libdeps since TLI was moved from Target to Analysis in r226078. 2015-01-15 05:21:00 +00:00
Makefile