Simon Pilgrim e6204cf2f1 [InstCombine] Improve Vector Demanded Bits Through Bitcasts ... Currently SimplifyDemandedVectorElts can only peek through bitcasts if the vectors have the same number of elements. This patch fixes and enables some existing (disabled) code to support bitcasting to vectors with more/fewer elements. It currently only accepts cases when vectors alias cleanly (i.e. number of elements are an exact multiple of the other vector). This was added to improve the demanded vector elements support for SSE vector shifts which require the __m128i (<2 x i64>) argument type to be bitcast to the vector type for the builtin shift. I've added extra tests for various additional bitcasts. Differential Revision: http://reviews.llvm.org/D12935 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@248784 91177308-0d34-0410-b5e6-96231b3b80d8		2015-09-29 08:19:11 +00:00
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CMakeLists.txt	Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.	2015-02-11 03:28:02 +00:00
InstCombineAddSub.cpp	don't repeat function names in comments; NFC	2015-09-09 15:24:36 +00:00
InstCombineAndOrXor.cpp	[InstCombine] match De Morgan's Law hidden by zext ops (PR22723)	2015-09-25 23:21:38 +00:00
InstCombineCalls.cpp	[X86][SSE] Replace 128-bit SSE41 PMOVSX intrinsics with native IR	2015-09-23 08:48:33 +00:00
InstCombineCasts.cpp	There is a trunc(lshr (zext A), Cst) optimization in InstCombineCasts that	2015-09-10 11:31:20 +00:00
InstCombineCompares.cpp	[InstCombine] FoldICmpCstShrCst failed for ashr when comparing against -1	2015-09-19 00:48:31 +00:00
InstCombineInternal.h	[InstCombine] fold zexts and constants into a phi (PR24766)	2015-09-27 20:34:31 +00:00
InstCombineLoadStoreAlloca.cpp	Clean up: Refactoring the hardcoded value of 6 for FindAvailableLoadedValue()'s parameter MaxInstsToScan. (Complete version of r247497. See D12886)	2015-09-18 19:14:35 +00:00
InstCombineMulDivRem.cpp	don't repeat function names in comments; NFC	2015-09-09 15:24:36 +00:00
InstCombinePHI.cpp	[InstCombine] fold zexts and constants into a phi (PR24766)	2015-09-27 20:34:31 +00:00
InstCombineSelect.cpp	don't repeat function names in comments; NFC	2015-09-09 15:24:36 +00:00
InstCombineShifts.cpp	Convert PHI getIncomingValue() to foreach over incoming_values(). NFC.	2015-05-12 20:05:31 +00:00
InstCombineSimplifyDemanded.cpp	[InstCombine] Improve Vector Demanded Bits Through Bitcasts	2015-09-29 08:19:11 +00:00
InstCombineVectorOps.cpp	don't repeat function names in comments; NFC	2015-09-09 15:24:36 +00:00
InstructionCombining.cpp	add ShouldChangeType() variant that takes bitwidths	2015-09-21 16:09:37 +00:00
LLVMBuild.txt	Update libdeps since TLI was moved from Target to Analysis in r226078.	2015-01-15 05:21:00 +00:00
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