[X86] Fix a regression introduced by r223641.

The permps and permd instructions have their operands swapped compared to the
intrinsic definition. Therefore, they do not fall into the INTR_TYPE_2OP
category.

I did not create a new category for those two, as they are the only one AFAICT
in that case.

<rdar://problem/20108262>

llvm-svn: 232085

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 366e4b9e073..0533afc59f6 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -14711,6 +14711,13 @@ static SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, const X86Subtarget *Subtarget
   switch (IntNo) {
   default: return SDValue();    // Don't custom lower most intrinsics.
 
+  case Intrinsic::x86_avx2_permd:
+  case Intrinsic::x86_avx2_permps:
+    // Operands intentionally swapped. Mask is last operand to intrinsic,
+    // but second operand for node/instruction.
+    return DAG.getNode(X86ISD::VPERMV, dl, Op.getValueType(),
+                       Op.getOperand(2), Op.getOperand(1));
+
   case Intrinsic::x86_avx512_mask_valign_q_512:
   case Intrinsic::x86_avx512_mask_valign_d_512:
     // Vector source operands are swapped.