[llvm] ceaedfb - [X86] Remove custom lowering of vXi1 ADD/SUB now that they are canonicalized to XOR in getNode.

[Craig Topper via llvm-commits]

Author: Craig Topper
Date: 2021-02-25T08:52:41-08:00
New Revision: ceaedfb5fc3a94adf9e67616d65414ddfee71e24

URL: https://github.com/llvm/llvm-project/commit/ceaedfb5fc3a94adf9e67616d65414ddfee71e24
DIFF: https://github.com/llvm/llvm-project/commit/ceaedfb5fc3a94adf9e67616d65414ddfee71e24.diff

LOG: [X86] Remove custom lowering of vXi1 ADD/SUB now that they are canonicalized to XOR in getNode.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D97478

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86ISelLowering.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 10da3b926dbc..b9a3a245b24c 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -1468,8 +1468,6 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,
     }
 
     for (auto VT : { MVT::v1i1, MVT::v2i1, MVT::v4i1, MVT::v8i1, MVT::v16i1 }) {
-      setOperationAction(ISD::ADD,              VT, Custom);
-      setOperationAction(ISD::SUB,              VT, Custom);
       setOperationAction(ISD::MUL,              VT, Custom);
       setOperationAction(ISD::UADDSAT,          VT, Custom);
       setOperationAction(ISD::SADDSAT,          VT, Custom);
@@ -27152,10 +27150,6 @@ static SDValue lowerAddSub(SDValue Op, SelectionDAG &DAG,
   if (VT == MVT::i16 || VT == MVT::i32)
     return lowerAddSubToHorizontalOp(Op, DAG, Subtarget);
 
-  if (VT.getScalarType() == MVT::i1)
-    return DAG.getNode(ISD::XOR, SDLoc(Op), VT,
-                       Op.getOperand(0), Op.getOperand(1));
-
   if (VT == MVT::v32i16 || VT == MVT::v64i8)
     return splitVectorIntBinary(Op, DAG);