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| author | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 21:08:26 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 21:08:26 +0000 |
| commit | 0638c20e7c6a084e454368c072f4bbe44c571479 (patch) | |
| tree | b22793dee7202f40e1ef224652b90f419c009645 /llvm/lib/CodeGen/PeepholeOptimizer.cpp | |
| parent | 134cde912a9ae7103d6c3bf7f2c1a6b2758b1ab3 (diff) | |
| download | bcm5719-llvm-0638c20e7c6a084e454368c072f4bbe44c571479.tar.gz bcm5719-llvm-0638c20e7c6a084e454368c072f4bbe44c571479.zip | |
DBG_VALUE does not have any side effects; it also makes no sense to mark it cheap as a copy.
llvm-svn: 123031
Diffstat (limited to 'llvm/lib/CodeGen/PeepholeOptimizer.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/PeepholeOptimizer.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/PeepholeOptimizer.cpp b/llvm/lib/CodeGen/PeepholeOptimizer.cpp index 07c2b80dcb0..1ddfe8b7c23 100644 --- a/llvm/lib/CodeGen/PeepholeOptimizer.cpp +++ b/llvm/lib/CodeGen/PeepholeOptimizer.cpp @@ -336,7 +336,9 @@ bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) { MachineInstr *MI = &*MII++; LocalMIs.insert(MI); - if (MI->getDesc().hasUnmodeledSideEffects()) + if (MI->isLabel() || MI->isPHI() || MI->isImplicitDef() || + MI->isKill() || MI->isInlineAsm() || MI->isDebugValue() || + MI->getDesc().hasUnmodeledSideEffects()) continue; if (MI->getDesc().isCompare()) { |
