Benjamin Kramer c37cb66e6e Fix for wrong instcombine on vector insert/extract ... When trying to collapse sequences of insertelement/extractelement instructions into single shuffle instructions, there is one specific case where the Instruction Combiner wrongly updates the resulting Mask of shuffle indexes. The problem is in function CollectShuffleElments. If we have a sequence of insert/extract element instructions like the one below: %tmp1 = extractelement <4 x float> %LHS, i32 0 %tmp2 = insertelement <4 x float> %RHS, float %tmp1, i32 1 %tmp3 = extractelement <4 x float> %RHS, i32 2 %tmp4 = insertelement <4 x float> %tmp2, float %tmp3, i32 3 Where: . %RHS will have a mask of [4,5,6,7] . %LHS will have a mask of [0,1,2,3] The Mask of shuffle indexes is wrongly computed to [4,1,6,7] instead of [4,0,6,7]. When analyzing %tmp2 in order to compute the Mask for the resulting shuffle instruction, the algorithm forgets to update the mask index at position 1 with the index associated to the element extracted from %LHS by instruction %tmp1. Patch by Andrea DiBiagio! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179291 91177308-0d34-0410-b5e6-96231b3b80d8		2013-04-11 15:10:09 +00:00
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Hello	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombine	Fix for wrong instcombine on vector insert/extract	2013-04-11 15:10:09 +00:00
Instrumentation	[ASan] Allow disabling init-order checks for globals by source file name.	2013-04-11 13:20:00 +00:00
IPO	Use a worklist to avoid a sneaky iterator invalidation.	2013-04-02 08:16:45 +00:00
ObjCARC	Fix some comment typos.	2013-04-09 22:15:51 +00:00
Scalar	Redo the fix Benjamin Kramer committed in r178793 about iterator invalidation in Reassociate.	2013-04-08 22:00:43 +00:00
Utils	Change CloneFunctionInto to always clone Argument attributes induvidually,	2013-04-10 10:37:38 +00:00
Vectorize	Rename the C function to create a SLPVectorizerPass to something sane and expose it in the header file.	2013-04-11 11:36:36 +00:00
CMakeLists.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
LLVMBuild.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
Makefile	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00