Quentin Colombet 3d996b9289 [InstCombiner] Slice a big load in two loads when the elements are next to each ... other in memory. The motivation was to get rid of truncate and shift right instructions that get in the way of paired load or floating point load. E.g., Consider the following example: struct Complex { float real; float imm; }; When accessing a complex, llvm was generating a 64-bits load and the imm field was obtained by a trunc(lshr) sequence, resulting in poor code generation, at least for x86. The idea is to declare that two load instructions is the canonical form for loading two arithmetic type, which are next to each other in memory. Two scalar loads at a constant offset from each other are pretty easy to detect for the sorts of passes that like to mess with loads. <rdar://problem/14477220> llvm-svn: 190870		2013-09-17 16:57:34 +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	Consistently use dbgs() in debug printing	2013-09-05 19:48:28 +00:00
InstCombineAddSub.cpp	Preserve fast-math flags when folding (fsub x, (fneg y)) to (fadd x, y).	2013-07-30 23:53:17 +00:00
InstCombineAndOrXor.cpp	InstCombine: allow unmasked icmps to be combined with logical ops	2013-09-04 11:57:17 +00:00
InstCombineCalls.cpp	Change behavior of calling bitcasted alias functions.	2013-07-30 20:45:05 +00:00
InstCombineCasts.cpp	Teach InstCombine about address spaces	2013-08-21 19:53:10 +00:00
InstCombineCompares.cpp	[InstCombiner] Expose opportunities to merge subtract and comparison.	2013-09-09 20:56:48 +00:00
InstCombineLoadStoreAlloca.cpp	[InstCombiner] Slice a big load in two loads when the elements are next to each	2013-09-17 16:57:34 +00:00
InstCombineMulDivRem.cpp	Correct case of m_UIToFp to m_UIToFP to match instruction name, add m_SIToFP for consistency.	2013-07-26 17:55:00 +00:00
InstCombinePHI.cpp	Get rid of unused isPodLike definitions.	2013-09-11 00:36:54 +00:00
InstCombineSelect.cpp	InstCombine: Also turn selects fed by an and into arithmetic when the types don't match.	2013-06-29 21:17:04 +00:00
InstCombineShifts.cpp
InstCombineSimplifyDemanded.cpp	InstCombine: Check for zero shift amounts before subtracting one causing integer overflow.	2013-08-30 14:35:35 +00:00
InstCombineVectorOps.cpp	Use type helper functions.	2013-09-06 00:37:24 +00:00
InstCombineWorklist.h	Consistently use dbgs() in debug printing	2013-09-05 19:48:28 +00:00
InstructionCombining.cpp	Consistently use dbgs() in debug printing	2013-09-05 19:48:28 +00:00
LLVMBuild.txt
Makefile