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llvm-6502/lib/Transforms/InstCombine
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Sanjay Patel 1111a216ee [x86] instcombine more cases of insertps into a shufflevector 
This is a follow-on to D8833 (insertps optimization when the zero mask is not used).

In this patch, we check for the case where the zmask is used, but both input vectors
to the insertps intrinsic are the same operand or the zmask overrides the destination
lane. This lets us replace the 2nd shuffle input operand with the zero vector.

Differential Revision: http://reviews.llvm.org/D9257



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235810 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-25 20:55:25 +00:00
..
CMakeLists.txt Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects. 2015-02-11 03:28:02 +00:00
InstCombineAddSub.cpp DataLayout is mandatory, update the API to reflect it with references. 2015-03-10 02:37:25 +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 DataLayout is mandatory, update the API to reflect it with references. 2015-03-10 02:37:25 +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] Use a more targeted fix instead of r235544 2015-04-22 22:42:05 +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