[llvm] [GlobalISel] Avoid repeated hash lookups (NFC) (PR #128633)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-globalisel

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/128633.diff


1 Files Affected:

- (modified) llvm/lib/CodeGen/GlobalISel/LegacyLegalizerInfo.cpp (+3-2) 


``````````diff
diff --git a/llvm/lib/CodeGen/GlobalISel/LegacyLegalizerInfo.cpp b/llvm/lib/CodeGen/GlobalISel/LegacyLegalizerInfo.cpp
index 9841c8ae1ffb2..05923e5fc97cc 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegacyLegalizerInfo.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegacyLegalizerInfo.cpp
@@ -308,9 +308,10 @@ LegacyLegalizerInfo::findScalarLegalAction(const InstrAspect &Aspect) const {
   ArrayRef<SizeAndActionsVec> Actions;
   if (Aspect.Type.isPointer()) {
     auto &PA = AddrSpace2PointerActions[OpcodeIdx];
-    if (PA.find(Aspect.Type.getAddressSpace()) == PA.end())
+    auto It = PA.find(Aspect.Type.getAddressSpace());
+    if (It == PA.end())
       return {NotFound, LLT()};
-    Actions = PA.find(Aspect.Type.getAddressSpace())->second;
+    Actions = It->second;
   } else {
     Actions = ScalarActions[OpcodeIdx];
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/128633