tree b91eaed77f6e1f86b7cf9ec2f3d89ace46817fac
parent 713bb48902d77ec8f333a8992bad15e38ec922c7
author Simon Pilgrim <llvm-dev@redking.me.uk> 1550941847 +0000
committer Simon Pilgrim <llvm-dev@redking.me.uk> 1550941847 +0000

[X86][AVX] Shuffle->Permute+Blend if we have one v4f64/v4i64 shuffle input in place

Even on AVX1 we can pretty cheaply (VPERM2F128+VSHUFPD) permute a single v4f64/v4i64 input (on AVX2 its just a single VPERMPD), followed by a BLENDPD.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354729 91177308-0d34-0410-b5e6-96231b3b80d8