diff options
Diffstat (limited to 'llvm/tools/llvm-exegesis/lib')
| -rw-r--r-- | llvm/tools/llvm-exegesis/lib/Latency.cpp | 19 | ||||
| -rw-r--r-- | llvm/tools/llvm-exegesis/lib/Latency.h | 2 |
2 files changed, 16 insertions, 5 deletions
diff --git a/llvm/tools/llvm-exegesis/lib/Latency.cpp b/llvm/tools/llvm-exegesis/lib/Latency.cpp index 29bb74f6673..e2aae970e22 100644 --- a/llvm/tools/llvm-exegesis/lib/Latency.cpp +++ b/llvm/tools/llvm-exegesis/lib/Latency.cpp @@ -94,6 +94,18 @@ LatencyBenchmarkRunner::generatePrototype(unsigned Opcode) const { return generateTwoInstructionPrototype(Instr); } +const char *LatencyBenchmarkRunner::getCounterName() const { + if (!State.getSubtargetInfo().getSchedModel().hasExtraProcessorInfo()) + llvm::report_fatal_error("sched model is missing extra processor info!"); + const char *CounterName = State.getSubtargetInfo() + .getSchedModel() + .getExtraProcessorInfo() + .PfmCounters.CycleCounter; + if (!CounterName) + llvm::report_fatal_error("sched model does not define a cycle counter"); + return CounterName; +} + std::vector<BenchmarkMeasure> LatencyBenchmarkRunner::runMeasurements(const ExecutableFunction &Function, const unsigned NumRepetitions) const { @@ -101,12 +113,9 @@ LatencyBenchmarkRunner::runMeasurements(const ExecutableFunction &Function, // measure several times and take the minimum value. constexpr const int NumMeasurements = 30; int64_t MinLatency = std::numeric_limits<int64_t>::max(); - const char *CounterName = State.getSubtargetInfo() - .getSchedModel() - .getExtraProcessorInfo() - .PfmCounters.CycleCounter; + const char *CounterName = getCounterName(); if (!CounterName) - llvm::report_fatal_error("sched model does not define a cycle counter"); + llvm::report_fatal_error("could not determine cycle counter name"); const pfm::PerfEvent CyclesPerfEvent(CounterName); if (!CyclesPerfEvent.valid()) llvm::report_fatal_error("invalid perf event"); diff --git a/llvm/tools/llvm-exegesis/lib/Latency.h b/llvm/tools/llvm-exegesis/lib/Latency.h index 058216d8113..9d6cfc7b387 100644 --- a/llvm/tools/llvm-exegesis/lib/Latency.h +++ b/llvm/tools/llvm-exegesis/lib/Latency.h @@ -38,6 +38,8 @@ private: std::vector<BenchmarkMeasure> runMeasurements(const ExecutableFunction &EF, const unsigned NumRepetitions) const override; + + virtual const char *getCounterName() const; }; } // namespace exegesis |
