[llvm] [CodeGen] Avoid repeated hash lookups (NFC) (PR #126403)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/126403

None

>From 130ced412e11e8c915296d45f87dd5228ac0ce8c Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sat, 8 Feb 2025 11:42:01 -0800
Subject: [PATCH] [CodeGen] Avoid repeated hash lookups (NFC)

---
 llvm/lib/CodeGen/StackColoring.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/llvm/lib/CodeGen/StackColoring.cpp b/llvm/lib/CodeGen/StackColoring.cpp
index 27c65d234a618c1..552dfdfe16ce4e1 100644
--- a/llvm/lib/CodeGen/StackColoring.cpp
+++ b/llvm/lib/CodeGen/StackColoring.cpp
@@ -1115,9 +1115,10 @@ void StackColoring::remapInstructions(DenseMap<int, int> &SlotRemap) {
   if (WinEHFuncInfo *EHInfo = MF->getWinEHFuncInfo())
     for (WinEHTryBlockMapEntry &TBME : EHInfo->TryBlockMap)
       for (WinEHHandlerType &H : TBME.HandlerArray)
-        if (H.CatchObj.FrameIndex != std::numeric_limits<int>::max() &&
-            SlotRemap.count(H.CatchObj.FrameIndex))
-          H.CatchObj.FrameIndex = SlotRemap[H.CatchObj.FrameIndex];
+        if (H.CatchObj.FrameIndex != std::numeric_limits<int>::max())
+          if (auto It = SlotRemap.find(H.CatchObj.FrameIndex);
+              It != SlotRemap.end())
+            H.CatchObj.FrameIndex = It->second;
 
   LLVM_DEBUG(dbgs() << "Fixed " << FixedMemOp << " machine memory operands.\n");
   LLVM_DEBUG(dbgs() << "Fixed " << FixedDbg << " debug locations.\n");