[llvm] [AMDGPU] Merge two V_CNDMASK instructions into V_DUAL_CNDMASK (PR #135007)

[Jay Foad via llvm-commits]

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@@ -1459,13 +1482,73 @@ bool SIFoldOperandsImpl::tryConstantFoldOp(MachineInstr *MI) const {
   return false;
 }
 
+bool SIFoldOperandsImpl::shouldSwitchOperands(MachineRegisterInfo &MRI,
+                                              MachineInstr &MI,
+                                              const SIInstrInfo &TII) const {
+  auto allUses = MRI.use_nodbg_operands(MI.getOperand(5).getReg());
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jayfoad wrote:

All variable names should start with an upper case letter.

https://github.com/llvm/llvm-project/pull/135007