forked from OSchip/llvm-project
9907d3c8b4
add A, sext(B) --> sub A, zext(B) We have to choose 1 of these forms, so I'm opting for the zext because that's easier for value tracking. The backend should be prepared for this change after: D57401 rL353433 This is also a preliminary step towards reducing the amount of bit hackery that we do in IR to optimize icmp/select. That should be waiting to happen at a later optimization stage. The seeming regression in the fuzzer test was discussed in: D58359 We were only managing that fold in instcombine by luck, and other passes should be able to deal with that better anyway. llvm-svn: 354748 |
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| .. | ||
| CMakeLists.txt | ||
| InstCombineAddSub.cpp | ||
| InstCombineAndOrXor.cpp | ||
| InstCombineAtomicRMW.cpp | ||
| InstCombineCalls.cpp | ||
| InstCombineCasts.cpp | ||
| InstCombineCompares.cpp | ||
| InstCombineInternal.h | ||
| InstCombineLoadStoreAlloca.cpp | ||
| InstCombineMulDivRem.cpp | ||
| InstCombinePHI.cpp | ||
| InstCombineSelect.cpp | ||
| InstCombineShifts.cpp | ||
| InstCombineSimplifyDemanded.cpp | ||
| InstCombineTables.td | ||
| InstCombineVectorOps.cpp | ||
| InstructionCombining.cpp | ||
| LLVMBuild.txt | ||