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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/MachineInstr.cpp | |
| parent | eaff66a8950bb9ed76e830c4ded7e0b695ab6904 (diff) | |
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/MachineInstr.cpp')
| -rw-r--r-- | lib/CodeGen/MachineInstr.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index bc2a545a5f..ccb2ffbab1 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -1115,7 +1115,9 @@ bool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, SawStore = true; return false; } - if (TID->isTerminator() || TID->hasUnmodeledSideEffects()) + + if (isLabel() || isDebugValue() || + TID->isTerminator() || TID->hasUnmodeledSideEffects()) return false; // See if this instruction does a load. If so, we have to guarantee that the |