[llvm] [AMDGPU] Clear load addresses between functions (PR #102515)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Alexis Engelke (aengelke)

<details>
<summary>Changes</summary>

SLoadAddresses previously held data across different functions and used these for dominance queries of blocks in different functions. This is not intended; clear the state at the end of the pass.

---
Full diff: https://github.com/llvm/llvm-project/pull/102515.diff


1 Files Affected:

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


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp b/llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
index 1315aa0855788..59a1eee8d4f91 100644
--- a/llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
+++ b/llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
@@ -2611,6 +2611,7 @@ bool SIInsertWaitcnts::runOnMachineFunction(MachineFunction &MF) {
     Modified = true;
   }
   ReleaseVGPRInsts.clear();
+  SLoadAddresses.clear();
 
   return Modified;
 }

``````````

</details>


https://github.com/llvm/llvm-project/pull/102515