Revert "[CodeGen][AArch64] Ensure isSExtCheaperThanZExt returns true for negative...
authorDavid Sherwood <david.sherwood@arm.com>
Thu, 13 Jan 2022 15:59:03 +0000 (15:59 +0000)
committerDavid Sherwood <david.sherwood@arm.com>
Thu, 13 Jan 2022 15:59:43 +0000 (15:59 +0000)
commitba471ba8d2a37617684e0bd87fe15b583f7e7de0
treee75865f9caa8aabb775bec1a6ddff8a6c73bcb1a
parentfe17ce0fa6626f79be663ab9948c1ed24d8e2b85
Revert "[CodeGen][AArch64] Ensure isSExtCheaperThanZExt returns true for negative constants"

This reverts commit 31009f0b5afb504fc1f30769c038e1b7be6ea45b.

It seems to be causing SVE VLA buildbot failures and has introduced a
genuine regression. Reverting for now.
21 files changed:
llvm/include/llvm/CodeGen/TargetLowering.h
llvm/lib/CodeGen/CodeGenPrepare.cpp
llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
llvm/lib/Target/AArch64/AArch64ISelLowering.h
llvm/lib/Target/RISCV/RISCVISelLowering.cpp
llvm/lib/Target/RISCV/RISCVISelLowering.h
llvm/test/CodeGen/AArch64/arm64-vshuffle.ll
llvm/test/CodeGen/AArch64/arm64_32-atomics.ll
llvm/test/CodeGen/AArch64/cmpxchg-idioms.ll
llvm/test/CodeGen/AArch64/dag-numsignbits.ll
llvm/test/CodeGen/AArch64/fast-isel-cmp-vec.ll
llvm/test/CodeGen/AArch64/funnel-shift.ll
llvm/test/CodeGen/AArch64/reduce-and.ll
llvm/test/CodeGen/AArch64/redundant-copy-elim-empty-mbb.ll
llvm/test/CodeGen/AArch64/statepoint-call-lowering.ll
llvm/test/CodeGen/AArch64/sve-vector-splat.ll
llvm/test/CodeGen/AArch64/unfold-masked-merge-vector-variablemask.ll
llvm/test/CodeGen/AArch64/vecreduce-and-legalization.ll