[clang] [llvm] [SystemZ] Global Stackprotector and associated location section (PR #169317)

[Ulrich Weigand via cfe-commits]

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@@ -8973,6 +9037,16 @@ SDValue SystemZTargetLowering::combineBR_CCMASK(SDNode *N,
                        DAG.getTargetConstant(CCValidVal, SDLoc(N), MVT::i32),
                        DAG.getTargetConstant(CCMaskVal, SDLoc(N), MVT::i32),
                        N->getOperand(3), CCReg);
+
+  SDLoc DL(N);
+
+  // Combine BR_CCMASK (ICMP (SELECT_CCMASK)) into a single BR_CCMASK.
+  if (combineCCMask(CCReg, CCValidVal, CCMaskVal, DAG))
+    return DAG.getNode(SystemZISD::BR_CCMASK, DL, N->getValueType(0), Chain,
+                       DAG.getTargetConstant(CCValidVal, DL, MVT::i32),
+                       DAG.getTargetConstant(CCMaskVal, DL, MVT::i32),
+                       N->getOperand(3), CCReg);
+
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uweigand wrote:

That's now duplicated?  None of those changes to `combineBR_CCMASK` should remain.

https://github.com/llvm/llvm-project/pull/169317