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[X86][XOP] Use default AVX2 lowering for v4i64 ashr by splat constants
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Wed, 19 Jul 2017 10:29:31 +0000 (10:29 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Wed, 19 Jul 2017 10:29:31 +0000 (10:29 +0000)
commit55bda90186e24b9ad3bfcfc8e853311fab104cc2
treee1d26daee34930d4509a1d0eb47a122f17bd12bbtree | snapshot
parent5ad383b9010e76b529738eac37638f1555dcc18ccommit | diff
[X86][XOP] Use default AVX2 lowering for v4i64 ashr by splat constants

XOP shifts only support 128-bit vectors, so we were ending up with less optimal codegen requiring constants

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308430 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
test/CodeGen/X86/vector-shift-ashr-256.ll diff | blob | history
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