[llvm] 1ec109e - [X86] combineCarryThroughADD - remove unused peek through of SEXT/AEXT nodes.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2022-03-29T17:22:50+01:00
New Revision: 1ec109ec589c8a84f246124ffc444a021b8b44e1

URL: https://github.com/llvm/llvm-project/commit/1ec109ec589c8a84f246124ffc444a021b8b44e1
DIFF: https://github.com/llvm/llvm-project/commit/1ec109ec589c8a84f246124ffc444a021b8b44e1.diff

LOG: [X86] combineCarryThroughADD - remove unused peek through of SEXT/AEXT nodes.

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index cb1f3343a65d4..6c571c06a22f8 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -44717,8 +44717,6 @@ static SDValue combineCarryThroughADD(SDValue EFLAGS, SelectionDAG &DAG) {
       SDValue Carry = EFLAGS.getOperand(0);
       while (Carry.getOpcode() == ISD::TRUNCATE ||
              Carry.getOpcode() == ISD::ZERO_EXTEND ||
-             Carry.getOpcode() == ISD::SIGN_EXTEND ||
-             Carry.getOpcode() == ISD::ANY_EXTEND ||
              (Carry.getOpcode() == ISD::AND &&
               isOneConstant(Carry.getOperand(1))))
         Carry = Carry.getOperand(0);