diff options
Diffstat (limited to 'llvm/include/llvm/CodeGen/MachineTraceMetrics.h')
| -rw-r--r-- | llvm/include/llvm/CodeGen/MachineTraceMetrics.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/llvm/include/llvm/CodeGen/MachineTraceMetrics.h b/llvm/include/llvm/CodeGen/MachineTraceMetrics.h index eaaa70a67d8..2775a048582 100644 --- a/llvm/include/llvm/CodeGen/MachineTraceMetrics.h +++ b/llvm/include/llvm/CodeGen/MachineTraceMetrics.h @@ -107,6 +107,13 @@ public: /// Get the fixed resource information about MBB. Compute it on demand. const FixedBlockInfo *getResources(const MachineBasicBlock*); + /// Get the scaled number of cycles used per processor resource in MBB. + /// This is an array with SchedModel.getNumProcResourceKinds() entries. + /// The getResources() function above must have been called first. + /// + /// These numbers have already been scaled by SchedModel.getResourceFactor(). + ArrayRef<unsigned> getProcResourceCycles(unsigned MBBNum) const; + /// A virtual register or regunit required by a basic block or its trace /// successors. struct LiveInReg { @@ -284,6 +291,8 @@ public: class Ensemble { SmallVector<TraceBlockInfo, 4> BlockInfo; DenseMap<const MachineInstr*, InstrCycles> Cycles; + SmallVector<unsigned, 0> ProcResourceDepths; + SmallVector<unsigned, 0> ProcResourceHeights; friend class Trace; void computeTrace(const MachineBasicBlock*); @@ -303,6 +312,8 @@ public: const MachineLoop *getLoopFor(const MachineBasicBlock*) const; const TraceBlockInfo *getDepthResources(const MachineBasicBlock*) const; const TraceBlockInfo *getHeightResources(const MachineBasicBlock*) const; + ArrayRef<unsigned> getProcResourceDepths(unsigned MBBNum) const; + ArrayRef<unsigned> getProcResourceHeights(unsigned MBBNum) const; public: virtual ~Ensemble(); @@ -343,8 +354,22 @@ private: // One entry per basic block, indexed by block number. SmallVector<FixedBlockInfo, 4> BlockInfo; + // Cycles consumed on each processor resource per block. + // The number of processor resource kinds is constant for a given subtarget, + // but it is not known at compile time. The number of cycles consumed by + // block B on processor resource R is at ProcResourceCycles[B*Kinds + R] + // where Kinds = SchedModel.getNumProcResourceKinds(). + SmallVector<unsigned, 0> ProcResourceCycles; + // One ensemble per strategy. Ensemble* Ensembles[TS_NumStrategies]; + + // Convert scaled resource usage to a cycle count that can be compared with + // latencies. + unsigned getCycles(unsigned Scaled) { + unsigned Factor = SchedModel.getLatencyFactor(); + return (Scaled + Factor - 1) / Factor; + } }; inline raw_ostream &operator<<(raw_ostream &OS, |
