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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-08-22 15:37:57 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-08-22 15:37:57 +0000 |
| commit | f29db275b2c1fef8ffdee057af01509bd6dd6a45 (patch) | |
| tree | 821f29370cd4c27df677e4be73c5c86526fa06cc /llvm/lib/CodeGen/BranchFolding.cpp | |
| parent | fc6eb7d3833e0233cda51e18a1f9e21f42c077e3 (diff) | |
| download | bcm5719-llvm-f29db275b2c1fef8ffdee057af01509bd6dd6a45.tar.gz bcm5719-llvm-f29db275b2c1fef8ffdee057af01509bd6dd6a45.zip | |
Reduce duplicated hash map lookups.
llvm-svn: 162362
Diffstat (limited to 'llvm/lib/CodeGen/BranchFolding.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/BranchFolding.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/BranchFolding.cpp b/llvm/lib/CodeGen/BranchFolding.cpp index fb65bb7f3fa..7df0e15292a 100644 --- a/llvm/lib/CodeGen/BranchFolding.cpp +++ b/llvm/lib/CodeGen/BranchFolding.cpp @@ -1554,8 +1554,7 @@ MachineBasicBlock::iterator findHoistingInsertPosAndDeps(MachineBasicBlock *MBB, for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) Uses.insert(*AI); } else { - if (Uses.count(Reg)) { - Uses.erase(Reg); + if (Uses.erase(Reg)) { for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs) Uses.erase(*SubRegs); // Use sub-registers to be conservative } |
