[llvm] [AMDGPU] SIInstrInfo: Fix resultDependsOnExec for VOPC instructions (PR #134629)

[Matt Arsenault via llvm-commits]

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@@ -147,12 +147,17 @@ bool SIInstrInfo::isReallyTriviallyReMaterializable(
 }
 
 // Returns true if the scalar result of a VALU instruction depends on exec.
-static bool resultDependsOnExec(const MachineInstr &MI) {
+bool SIInstrInfo::resultDependsOnExec(const MachineInstr &MI) const {
   // Ignore comparisons which are only used masked with exec.
   // This allows some hoisting/sinking of VALU comparisons.
   if (MI.isCompare()) {
     const MachineRegisterInfo &MRI = MI.getParent()->getParent()->getRegInfo();
-    Register DstReg = MI.getOperand(0).getReg();
+    const MachineOperand *Dst = getNamedOperand(MI, AMDGPU::OpName::sdst);
+
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arsenm wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/134629