[llvm] eef6c09 - [ARM] Avoid repeated hash lookups (NFC) (#111935)
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Fri Oct 11 08:58:09 PDT 2024
Author: Kazu Hirata
Date: 2024-10-11T08:58:06-07:00
New Revision: eef6c0926ea5075c7b67a8f6023bfc775563d1f6
URL: https://github.com/llvm/llvm-project/commit/eef6c0926ea5075c7b67a8f6023bfc775563d1f6
DIFF: https://github.com/llvm/llvm-project/commit/eef6c0926ea5075c7b67a8f6023bfc775563d1f6.diff
LOG: [ARM] Avoid repeated hash lookups (NFC) (#111935)
Added:
Modified:
llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index b151a0116a9c41..c7b6b3579120dc 100644
--- a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -2532,7 +2532,6 @@ ARMPreAllocLoadStoreOpt::RescheduleLoadStoreInstrs(MachineBasicBlock *MBB) {
bool RetVal = false;
DenseMap<MachineInstr *, unsigned> MI2LocMap;
- using MapIt = DenseMap<unsigned, SmallVector<MachineInstr *, 4>>::iterator;
using Base2InstMap = DenseMap<unsigned, SmallVector<MachineInstr *, 4>>;
using BaseVec = SmallVector<unsigned, 4>;
Base2InstMap Base2LdsMap;
@@ -2571,9 +2570,9 @@ ARMPreAllocLoadStoreOpt::RescheduleLoadStoreInstrs(MachineBasicBlock *MBB) {
int Offset = getMemoryOpOffset(MI);
bool StopHere = false;
auto FindBases = [&](Base2InstMap &Base2Ops, BaseVec &Bases) {
- MapIt BI = Base2Ops.find(Base);
- if (BI == Base2Ops.end()) {
- Base2Ops[Base].push_back(&MI);
+ auto [BI, Inserted] = Base2Ops.try_emplace(Base);
+ if (Inserted) {
+ BI->second.push_back(&MI);
Bases.push_back(Base);
return;
}
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