From 4e2f757dc100a2bf75b8dc9d6302ebd453b3cd2c Mon Sep 17 00:00:00 2001 From: Simon Pilgrim Date: Fri, 16 Feb 2018 14:57:25 +0000 Subject: [X86][SSE] Allow float domain crossing if we are merging 2 or more shuffles and the root started as a float domain shuffle llvm-svn: 325349 --- llvm/lib/Target/X86/X86ISelLowering.cpp | 1 + 1 file changed, 1 insertion(+) (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp') diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 6df80725002..d90b1397074 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -28747,6 +28747,7 @@ static SDValue combineX86ShuffleChain(ArrayRef Inputs, SDValue Root, unsigned NumRootElts = RootVT.getVectorNumElements(); unsigned BaseMaskEltSizeInBits = RootSizeInBits / NumBaseMaskElts; bool FloatDomain = VT1.isFloatingPoint() || VT2.isFloatingPoint() || + (RootVT.isFloatingPoint() && Depth >= 2) || (RootVT.is256BitVector() && !Subtarget.hasAVX2()); // Don't combine if we are a AVX512/EVEX target and the mask element size -- cgit v1.2.3