Add VPERMQ/VPERMPD to the list of target specific shuffles that can be looked through for DAG combine purposes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156266 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 24d95a9..e282617 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -2914,6 +2914,7 @@
case X86ISD::UNPCKH:
case X86ISD::VPERMILP:
case X86ISD::VPERM2X128:
+ case X86ISD::VPERMI:
return true;
}
}
@@ -4455,6 +4456,11 @@
DecodePSHUFLWMask(VT, cast<ConstantSDNode>(ImmN)->getZExtValue(), Mask);
IsUnary = true;
break;
+ case X86ISD::VPERMI:
+ ImmN = N->getOperand(N->getNumOperands()-1);
+ DecodeVPERMMask(cast<ConstantSDNode>(ImmN)->getZExtValue(), Mask);
+ IsUnary = true;
+ break;
case X86ISD::MOVSS:
case X86ISD::MOVSD: {
// The index 0 always comes from the first element of the second source,