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[X86][SSE] Disable ZERO_EXTEND shuffle combining
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Tue, 5 Feb 2019 19:15:48 +0000 (19:15 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Tue, 5 Feb 2019 19:15:48 +0000 (19:15 +0000)
commit58b0c984e4f28eddf7685ffabedff3fd19f4f88b
tree38d791833fcc28965075fd52a570bc8ad40cb7b9tree | snapshot
parent747f42fa4c7ffa051370a7465f376009294f5db0commit | diff
[X86][SSE] Disable ZERO_EXTEND shuffle combining

rL352997 enabled ZERO_EXTEND from non-shuffle-able value types. I've disabled it for now to fix a regression identified by @asbirlea until I can fix this properly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353198 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
test/CodeGen/X86/vector-shuffle-256-v8.ll diff | blob | history
test/CodeGen/X86/vector-shuffle-combining-avx2.ll diff | blob | history
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