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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 | 30a343aeedf777f9b8b6be9823da750afbf765b1 (patch) | |
| tree | e6b405c527a518555d2cb424546fa4ddeae4f84f /lib/CodeGen/PeepholeOptimizer.cpp | |
| parent | eaff66a8950bb9ed76e830c4ded7e0b695ab6904 (diff) | |
| download | llvm-30a343aeedf777f9b8b6be9823da750afbf765b1.tar.gz llvm-30a343aeedf777f9b8b6be9823da750afbf765b1.tar.bz2 llvm-30a343aeedf777f9b8b6be9823da750afbf765b1.tar.xz | |
DBG_VALUE does not have any side effects; it also makes no sense to mark it cheap as a copy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123031 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/PeepholeOptimizer.cpp')
| -rw-r--r-- | lib/CodeGen/PeepholeOptimizer.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/PeepholeOptimizer.cpp b/lib/CodeGen/PeepholeOptimizer.cpp index 07c2b80dcb..1ddfe8b7c2 100644 --- a/lib/CodeGen/PeepholeOptimizer.cpp +++ b/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()) { |