diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/llvm/MC/MCSchedule.h | 10 | ||||
-rw-r--r-- | include/llvm/Target/TargetSchedule.td | 1 |
2 files changed, 9 insertions, 2 deletions
diff --git a/include/llvm/MC/MCSchedule.h b/include/llvm/MC/MCSchedule.h index 626accb..3b1cdf1 100644 --- a/include/llvm/MC/MCSchedule.h +++ b/include/llvm/MC/MCSchedule.h @@ -78,6 +78,11 @@ public: unsigned HighLatency; static const unsigned DefaultHighLatency = 10; + // MispredictPenalty is the typical number of extra cycles the processor + // takes to recover from a branch misprediction. + unsigned MispredictPenalty; + static const unsigned DefaultMispredictPenalty = 10; + private: // TODO: Add a reference to proc resource types and sched resource tables. @@ -94,13 +99,14 @@ public: MinLatency(DefaultMinLatency), LoadLatency(DefaultLoadLatency), HighLatency(DefaultHighLatency), + MispredictPenalty(DefaultMispredictPenalty), InstrItineraries(0) {} // Table-gen driven ctor. - MCSchedModel(unsigned iw, int ml, unsigned ll, unsigned hl, + MCSchedModel(unsigned iw, int ml, unsigned ll, unsigned hl, unsigned mp, const InstrItinerary *ii): IssueWidth(iw), MinLatency(ml), LoadLatency(ll), HighLatency(hl), - InstrItineraries(ii){} + MispredictPenalty(mp), InstrItineraries(ii){} }; } // End llvm namespace diff --git a/include/llvm/Target/TargetSchedule.td b/include/llvm/Target/TargetSchedule.td index 5bbed58..4dc488d 100644 --- a/include/llvm/Target/TargetSchedule.td +++ b/include/llvm/Target/TargetSchedule.td @@ -27,6 +27,7 @@ class SchedMachineModel { // (-1) inorder (0) ooo, (1): inorder +var latencies. int LoadLatency = -1; // Cycles for loads to access the cache. int HighLatency = -1; // Approximation of cycles for "high latency" ops. + int MispredictPenalty = -1; // Extra cycles for a mispredicted branch. ProcessorItineraries Itineraries = NoItineraries; |