diff options
Diffstat (limited to 'lib/CodeGen/MachineSink.cpp')
| -rw-r--r-- | lib/CodeGen/MachineSink.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineSink.cpp b/lib/CodeGen/MachineSink.cpp index dff60f6d39..31aeea5724 100644 --- a/lib/CodeGen/MachineSink.cpp +++ b/lib/CodeGen/MachineSink.cpp @@ -130,6 +130,10 @@ bool MachineSinking::ProcessBlock(MachineBasicBlock &MBB) { /// SinkInstruction - Determine whether it is safe to sink the specified machine /// instruction out of its current block into a successor. bool MachineSinking::SinkInstruction(MachineInstr *MI) { + // Don't sink things with side-effects we don't understand. + if (TII->hasUnmodelledSideEffects(MI)) + return false; + // Loop over all the operands of the specified instruction. If there is // anything we can't handle, bail out. MachineBasicBlock *ParentBlock = MI->getParent(); |