diff options
Diffstat (limited to 'include/llvm/CodeGen/TargetSchedule.h')
| -rw-r--r-- | include/llvm/CodeGen/TargetSchedule.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/TargetSchedule.h b/include/llvm/CodeGen/TargetSchedule.h index f2adcf8..8ef26b7 100644 --- a/include/llvm/CodeGen/TargetSchedule.h +++ b/include/llvm/CodeGen/TargetSchedule.h @@ -152,7 +152,13 @@ public: /// Compute and return the expected latency of this instruction independent of /// a particular use. computeOperandLatency is the prefered API, but this is /// occasionally useful to help estimate instruction cost. - unsigned computeInstrLatency(const MachineInstr *MI) const; + /// + /// If UseDefaultDefLatency is false and no new machine sched model is + /// present this method falls back to TII->getInstrLatency with an empty + /// instruction itinerary (this is so we preserve the previous behavior of the + /// if converter after moving it to TargetSchedModel). + unsigned computeInstrLatency(const MachineInstr *MI, + bool UseDefaultDefLatency = true) const; /// \brief Output dependency latency of a pair of defs of the same register. /// |