]> granicus.if.org Git - llvm/commit
[X86][SSE] SimplifyDemandedBitsForTargetNode - PCMPGT(0,X) sign mask
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Mon, 4 Feb 2019 15:43:36 +0000 (15:43 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Mon, 4 Feb 2019 15:43:36 +0000 (15:43 +0000)
commit152f9e6296a773b0ff85f07d0d986c312340e142
tree4127bb6c95a8b87fa62d8ce8fcac6efe25104899
parent5e786f3ff1f03e2f69d5ec0b6c26de4a2217d0d0
[X86][SSE] SimplifyDemandedBitsForTargetNode - PCMPGT(0,X) sign mask

For PCMPGT(0, X) patterns where we only demand the sign bit (e.g. BLENDV or MOVMSK) then we can use X directly.

Differential Revision: https://reviews.llvm.org/D57667

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353051 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp
test/CodeGen/X86/avx512-cvt-widen.ll
test/CodeGen/X86/avx512-cvt.ll
test/CodeGen/X86/bitcast-setcc-128.ll
test/CodeGen/X86/bitcast-setcc-256.ll
test/CodeGen/X86/bitcast-setcc-512.ll
test/CodeGen/X86/movmsk-cmp.ll