.. option:: -ftime-report
+.. option:: -ftime-trace
+
+Turn on time profiler
+
+.. option:: -ftime-trace-granularity=<arg>
+
+Minimum time granularity (in microseconds) traced by time profiler
+
.. option:: -ftls-model=<arg>
.. option:: -ftrap-function=<arg>
CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers
CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled.
CODEGENOPT(TimeTrace , 1, 0) ///< Set when -ftime-trace is enabled.
+VALUE_CODEGENOPT(TimeTraceGranularity, 32, 500) ///< Minimum time granularity (in microseconds),
+ ///< traced by time profiler
CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled.
CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled.
CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is enabled.
def : Flag<["-"], "fterminated-vtables">, Alias<fapple_kext>;
def fthreadsafe_statics : Flag<["-"], "fthreadsafe-statics">, Group<f_Group>;
def ftime_report : Flag<["-"], "ftime-report">, Group<f_Group>, Flags<[CC1Option]>;
-def ftime_trace : Flag<["-"], "ftime-trace">, Group<f_Group>, Flags<[CC1Option, CoreOption]>;
+def ftime_trace : Flag<["-"], "ftime-trace">, Group<f_Group>,
+ HelpText<"Turn on time profiler">, Flags<[CC1Option, CoreOption]>;
+def ftime_trace_granularity_EQ : Joined<["-"], "ftime-trace-granularity=">, Group<f_Group>,
+ HelpText<"Minimum time granularity (in microseconds) traced by time profiler">,
+ Flags<[CC1Option, CoreOption]>;
def ftlsmodel_EQ : Joined<["-"], "ftls-model=">, Group<f_Group>, Flags<[CC1Option]>;
def ftrapv : Flag<["-"], "ftrapv">, Group<f_Group>, Flags<[CC1Option]>,
HelpText<"Trap on integer overflow">;
/// Filename to write statistics to.
std::string StatsFile;
+ /// Minimum time granularity (in microseconds) traced by time profiler.
+ unsigned TimeTraceGranularity;
+
public:
FrontendOptions()
: DisableFree(false), RelocatablePCH(false), ShowHelp(false),
UseGlobalModuleIndex(true), GenerateGlobalModuleIndex(true),
ASTDumpDecls(false), ASTDumpLookups(false),
BuildingImplicitModule(false), ModulesEmbedAllFiles(false),
- IncludeTimestamps(true) {}
+ IncludeTimestamps(true), TimeTraceGranularity(500) {}
/// getInputKindForExtension - Return the appropriate input kind for a file
/// extension. For example, "c" would return InputKind::C.
Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
+ Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
Args.AddLastArg(CmdArgs, options::OPT_malign_double);
Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
Opts.PrintSupportedCPUs = Args.hasArg(OPT_print_supported_cpus);
Opts.TimeTrace = Args.hasArg(OPT_ftime_trace);
+ Opts.TimeTraceGranularity = getLastArgIntValue(
+ Args, OPT_ftime_trace_granularity_EQ, Opts.TimeTraceGranularity, Diags);
Opts.ShowVersion = Args.hasArg(OPT_version);
Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
// REQUIRES: shell
-// RUN: %clangxx -S -ftime-trace -mllvm --time-trace-granularity=0 -o %T/check-time-trace %s
+// RUN: %clangxx -S -ftime-trace -ftime-trace-granularity=0 -o %T/check-time-trace %s
// RUN: cat %T/check-time-trace.json \
// RUN: | %python -c 'import json, sys; json.dump(json.loads(sys.stdin.read()), sys.stdout, sort_keys=True, indent=2)' \
// RUN: | FileCheck %s
bool Success = CompilerInvocation::CreateFromArgs(
Clang->getInvocation(), Argv.begin(), Argv.end(), Diags);
- if (Clang->getFrontendOpts().TimeTrace)
- llvm::timeTraceProfilerInitialize();
-
+ if (Clang->getFrontendOpts().TimeTrace) {
+ llvm::timeTraceProfilerInitialize(
+ Clang->getFrontendOpts().TimeTraceGranularity);
+ }
// --print-supported-cpus takes priority over the actual compilation.
if (Clang->getFrontendOpts().PrintSupportedCPUs)
return PrintSupportedCPUs(Clang->getTargetOpts().Triple);
/// Initialize the time trace profiler.
/// This sets up the global \p TimeTraceProfilerInstance
/// variable to be the profiler instance.
-void timeTraceProfilerInitialize();
+void timeTraceProfilerInitialize(unsigned TimeTraceGranularity);
/// Cleanup the time trace profiler, if it was initialized.
void timeTraceProfilerCleanup();
namespace llvm {
-static cl::opt<unsigned> TimeTraceGranularity(
- "time-trace-granularity",
- cl::desc(
- "Minimum time granularity (in microseconds) traced by time profiler"),
- cl::init(500));
-
TimeTraceProfiler *TimeTraceProfilerInstance = nullptr;
typedef duration<steady_clock::rep, steady_clock::period> DurationType;
SmallVector<Entry, 128> Entries;
StringMap<CountAndDurationType> CountAndTotalPerName;
time_point<steady_clock> StartTime;
+
+ // Minimum time granularity (in microseconds)
+ unsigned TimeTraceGranularity;
};
-void timeTraceProfilerInitialize() {
+void timeTraceProfilerInitialize(unsigned TimeTraceGranularity) {
assert(TimeTraceProfilerInstance == nullptr &&
"Profiler should not be initialized");
TimeTraceProfilerInstance = new TimeTraceProfiler();
+ TimeTraceProfilerInstance->TimeTraceGranularity = TimeTraceGranularity;
}
void timeTraceProfilerCleanup() {