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Diffstat (limited to 'lib/CodeGen/DeadMachineInstructionElim.cpp')
| -rw-r--r-- | lib/CodeGen/DeadMachineInstructionElim.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/DeadMachineInstructionElim.cpp b/lib/CodeGen/DeadMachineInstructionElim.cpp index 48213c1..c17a35d 100644 --- a/lib/CodeGen/DeadMachineInstructionElim.cpp +++ b/lib/CodeGen/DeadMachineInstructionElim.cpp @@ -59,6 +59,10 @@ bool DeadMachineInstructionElim::isDead(const MachineInstr *MI) const { if (MI->isInlineAsm()) return false; + // Don't delete frame allocation labels. + if (MI->getOpcode() == TargetOpcode::FRAME_ALLOC) + return false; + // Don't delete instructions with side effects. bool SawStore = false; if (!MI->isSafeToMove(TII, nullptr, SawStore) && !MI->isPHI()) |