[clang] [llvm] Add support for flag output operand "=@cc" for SystemZ. (PR #125970)

[Ulrich Weigand via llvm-commits]

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@@ -8113,10 +8583,151 @@ static bool combineCCMask(SDValue &CCReg, int &CCValid, int &CCMask) {
     CCReg = IPM->getOperand(0);
     return true;
   }
-
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uweigand wrote:

These shouldn't be here.

https://github.com/llvm/llvm-project/pull/125970