[IPO] Avoid repeated map lookups (NFC)

[kazutakahirata]

No description provided.

[llvmbot]

@llvm/pr-subscribers-llvm-transforms

Author: Kazu Hirata (kazutakahirata)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/132144.diff

1 Files Affected:

• (modified) llvm/lib/Transforms/IPO/SampleContextTracker.cpp (+3-2)

diff --git a/llvm/lib/Transforms/IPO/SampleContextTracker.cpp b/llvm/lib/Transforms/IPO/SampleContextTracker.cpp
index 270ca56d04823..c8f203e8ce3ee 100644
--- a/llvm/lib/Transforms/IPO/SampleContextTracker.cpp
+++ b/llvm/lib/Transforms/IPO/SampleContextTracker.cpp
@@ -189,8 +189,9 @@ ContextTrieNode *ContextTrieNode::getOrCreateChildContext(
   if (!AllowCreate)
     return nullptr;
 
-  AllChildContext[Hash] = ContextTrieNode(this, CalleeName, nullptr, CallSite);
-  return &AllChildContext[Hash];
+  ContextTrieNode &ACC = AllChildContext[Hash];
+  ACC = ContextTrieNode(this, CalleeName, nullptr, CallSite);
+  return &ACC;
 }
 
 // Profiler tracker than manages profiles and its associated context