diff options
| -rw-r--r-- | lib/CodeGen/ScheduleDAGInstrs.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/ScheduleDAGInstrs.cpp b/lib/CodeGen/ScheduleDAGInstrs.cpp index ddf445d7a9..02d07fa08c 100644 --- a/lib/CodeGen/ScheduleDAGInstrs.cpp +++ b/lib/CodeGen/ScheduleDAGInstrs.cpp @@ -362,6 +362,7 @@ void ScheduleDAGInstrs::addVRegDefDeps(SUnit *SU, unsigned OperIdx) { unsigned Reg = MI->getOperand(OperIdx).getReg(); // SSA defs do not have output/anti dependencies. + // The current operand is a def, so we have at least one. if (llvm::next(MRI.def_begin(Reg)) == MRI.def_end()) return; |