[llvm] [GlobalISel] Avoid repeated hash lookups (NFC) (PR #124393)

[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/124393.diff


1 Files Affected:

- (modified) llvm/lib/CodeGen/GlobalISel/CSEInfo.cpp (+1-4) 


``````````diff
diff --git a/llvm/lib/CodeGen/GlobalISel/CSEInfo.cpp b/llvm/lib/CodeGen/GlobalISel/CSEInfo.cpp
index 3a9069848ca1db..0222069cfc576d 100644
--- a/llvm/lib/CodeGen/GlobalISel/CSEInfo.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/CSEInfo.cpp
@@ -181,10 +181,7 @@ MachineInstr *GISelCSEInfo::getMachineInstrIfExists(FoldingSetNodeID &ID,
 
 void GISelCSEInfo::countOpcodeHit(unsigned Opc) {
 #ifndef NDEBUG
-  if (OpcodeHitTable.count(Opc))
-    OpcodeHitTable[Opc] += 1;
-  else
-    OpcodeHitTable[Opc] = 1;
+  ++OpcodeHitTable[Opc];
 #endif
   // Else do nothing.
 }

``````````

</details>


https://github.com/llvm/llvm-project/pull/124393