[llvm] SPIRV: Simplify phi processing (PR #137050)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-spir-v

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/137050.diff


1 Files Affected:

- (modified) llvm/lib/Target/SPIRV/SPIRVModuleAnalysis.cpp (+1-3) 


``````````diff
diff --git a/llvm/lib/Target/SPIRV/SPIRVModuleAnalysis.cpp b/llvm/lib/Target/SPIRV/SPIRVModuleAnalysis.cpp
index 6e1c41d9f20cb..783c405b1ac42 100644
--- a/llvm/lib/Target/SPIRV/SPIRVModuleAnalysis.cpp
+++ b/llvm/lib/Target/SPIRV/SPIRVModuleAnalysis.cpp
@@ -2019,9 +2019,7 @@ static void patchPhis(const Module &M, SPIRVGlobalRegistry *GR,
     if (!MF)
       continue;
     for (auto &MBB : *MF) {
-      for (MachineInstr &MI : MBB) {
-        if (MI.getOpcode() != TargetOpcode::PHI)
-          continue;
+      for (MachineInstr &MI : MBB.phis()) {
         MI.setDesc(TII.get(SPIRV::OpPhi));
         Register ResTypeReg = GR->getSPIRVTypeID(
             GR->getSPIRVTypeForVReg(MI.getOperand(0).getReg(), MF));

``````````

</details>


https://github.com/llvm/llvm-project/pull/137050