[llvm] [ARM] Avoid repeated hash lookups (NFC) (PR #109569)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-arm

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/109569.diff


1 Files Affected:

- (modified) llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index e42623cb385637..b042ee69edd26c 100644
--- a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -3289,7 +3289,7 @@ bool ARMPreAllocLoadStoreOpt::DistributeIncrements() {
         continue;
 
       Register Base = MI.getOperand(BaseOp).getReg();
-      if (!Base.isVirtual() || Visited.count(Base))
+      if (!Base.isVirtual())
         continue;
 
       Visited.insert(Base);

``````````

</details>


https://github.com/llvm/llvm-project/pull/109569