diff options
Diffstat (limited to 'llvm/lib/CodeGen/ScheduleDAGInstrs.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/ScheduleDAGInstrs.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp index 2b00b596d3b..fd75576c786 100644 --- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp +++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp @@ -210,7 +210,8 @@ void ScheduleDAGInstrs::addSchedBarrierDeps() { Uses[Reg].push_back(PhysRegSUOper(&ExitSU, -1)); else { assert(!IsPostRA && "Virtual register encountered after regalloc."); - addVRegUseDeps(&ExitSU, i); + if (MO.readsReg()) // ignore undef operands + addVRegUseDeps(&ExitSU, i); } } } else { |
