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44c273d907
While there, I noticed that the transform "undef >>a X -> undef" was wrong. For example if X is 2 then the top two bits must be equal, so the result can not be anything. I fixed this in the constant folder as well. Also, I made the transform for "X << undef" stronger: it now folds to undef always, even though X might be zero. This is in accordance with the LangRef, but I must admit that it is fairly aggressive. Also, I added "i32 X << 32 -> undef" following the LangRef and the constant folder, likewise fairly aggressive. llvm-svn: 123417 |
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.. | ||
CMakeLists.txt | ||
InstCombine.h | ||
InstCombineAddSub.cpp | ||
InstCombineAndOrXor.cpp | ||
InstCombineCalls.cpp | ||
InstCombineCasts.cpp | ||
InstCombineCompares.cpp | ||
InstCombineLoadStoreAlloca.cpp | ||
InstCombineMulDivRem.cpp | ||
InstCombinePHI.cpp | ||
InstCombineSelect.cpp | ||
InstCombineShifts.cpp | ||
InstCombineSimplifyDemanded.cpp | ||
InstCombineVectorOps.cpp | ||
InstCombineWorklist.h | ||
InstructionCombining.cpp | ||
Makefile |