[llvm] [AMDGPU] Handle S_GETREG_B32_const in the hazard recognizer. NFCI (PR #160364)

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Tue Sep 23 11:46:27 PDT 2025


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Stanislav Mekhanoshin (rampitec)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/160364.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp b/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
index a3b64aee297b2..81da6325b81ba 100644
--- a/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
+++ b/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
@@ -82,7 +82,7 @@ static bool isDivFMas(unsigned Opcode) {
 }
 
 static bool isSGetReg(unsigned Opcode) {
-  return Opcode == AMDGPU::S_GETREG_B32;
+  return Opcode == AMDGPU::S_GETREG_B32 || Opcode == AMDGPU::S_GETREG_B32_const;
 }
 
 static bool isSSetReg(unsigned Opcode) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/160364


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