[llvm] 4913e7b - [SelectionDAG] Avoid repeated hash lookups (NFC) (#128999)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-02-27T01:46:18-08:00
New Revision: 4913e7bb6934c57e60db076a0331ac45ad0439f6

URL: https://github.com/llvm/llvm-project/commit/4913e7bb6934c57e60db076a0331ac45ad0439f6
DIFF: https://github.com/llvm/llvm-project/commit/4913e7bb6934c57e60db076a0331ac45ad0439f6.diff

LOG: [SelectionDAG] Avoid repeated hash lookups (NFC) (#128999)

Added: 
    

Modified: 
    llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
index 33c6341744478..8bc288f1d29fc 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -343,9 +343,9 @@ void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf,
     for (auto &KV : EHInfo.UnwindDestToSrcs) {
       const auto *Dest = cast<const BasicBlock *>(KV.first);
       MachineBasicBlock *DestMBB = getMBB(Dest);
-      UnwindDestToSrcs[DestMBB] = SmallPtrSet<BBOrMBB, 4>();
+      auto &Srcs = UnwindDestToSrcs[DestMBB];
       for (const auto P : KV.second)
-        UnwindDestToSrcs[DestMBB].insert(getMBB(cast<const BasicBlock *>(P)));
+        Srcs.insert(getMBB(cast<const BasicBlock *>(P)));
     }
     EHInfo.UnwindDestToSrcs = std::move(UnwindDestToSrcs);
   }