diff options
| -rw-r--r-- | lib/CodeGen/MachineLICM.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp index 758f42a3f5..302581f4dd 100644 --- a/lib/CodeGen/MachineLICM.cpp +++ b/lib/CodeGen/MachineLICM.cpp @@ -264,6 +264,11 @@ bool MachineLICM::IsLoopInvariantInst(MachineInstr &I) { } }); + if (I.getDesc().getImplicitDefs() || I.getDesc().getImplicitUses()) { + DOUT << "Cannot hoist with implicit defines or uses\n"; + return false; + } + // The instruction is loop invariant if all of its operands are. for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i) { const MachineOperand &MO = I.getOperand(i); |