Simon Pilgrim 95228d060e [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 llvm-svn: 248784		2015-09-29 08:19:11 +00:00
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Hello	Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)	2015-06-23 09:49:53 +00:00
InstCombine	[InstCombine] Improve Vector Demanded Bits Through Bitcasts	2015-09-29 08:19:11 +00:00
Instrumentation	[safestack] Fix compiler crash in the presence of stack restores.	2015-09-24 01:23:51 +00:00
IPO	Move dbg.declare intrinsics when merging and replacing allocas.	2015-09-29 00:30:19 +00:00
ObjCARC	[PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible	2015-09-09 17:55:00 +00:00
Scalar	[LoopUnswitch] Add block frequency analysis to recognize hot/cold regions	2015-09-29 05:03:32 +00:00
Utils	Move dbg.declare intrinsics when merging and replacing allocas.	2015-09-29 00:30:19 +00:00
Vectorize	[SCEV] Introduce ScalarEvolution::getOne and getZero.	2015-09-23 01:59:04 +00:00
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