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| author | Kazu Hirata <kazu@google.com> | 2025-02-01 08:14:39 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-02-01 08:14:39 -0800 |
| commit | 8266eedfdccddfc8901679ee55e358793e29bba5 (patch) | |
| tree | 5e7601c7e78eb00bda51c153a7c7cc4e7ed8cb7f /llvm | |
| parent | e11e65f08b00a96916ce5ec21bf31d061158829d (diff) | |
| download | llvm-8266eedfdccddfc8901679ee55e358793e29bba5.zip llvm-8266eedfdccddfc8901679ee55e358793e29bba5.tar.gz llvm-8266eedfdccddfc8901679ee55e358793e29bba5.tar.bz2 | |
[SandboxIR] Avoid repeated hash lookups (NFC) (#125337)
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/SandboxIR/Region.cpp | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/llvm/lib/SandboxIR/Region.cpp b/llvm/lib/SandboxIR/Region.cpp index 8c84d0c..dbb000e 100644 --- a/llvm/lib/SandboxIR/Region.cpp +++ b/llvm/lib/SandboxIR/Region.cpp @@ -94,16 +94,12 @@ Region::createRegionsFromMD(Function &F, TargetTransformInfo &TTI) { for (BasicBlock &BB : F) { for (Instruction &Inst : BB) { if (auto *MDN = cast<llvm::Instruction>(Inst.Val)->getMetadata(MDKind)) { - Region *R = nullptr; - auto It = MDNToRegion.find(MDN); - if (It == MDNToRegion.end()) { + auto [It, Inserted] = MDNToRegion.try_emplace(MDN); + if (Inserted) { Regions.push_back(std::make_unique<Region>(Ctx, TTI)); - R = Regions.back().get(); - MDNToRegion[MDN] = R; - } else { - R = It->second; + It->second = Regions.back().get(); } - R->add(&Inst); + It->second->add(&Inst); } } } |