mirror of
https://github.com/ldc-developers/ldc.git
synced 2025-05-04 09:00:33 +03:00
115 lines
4 KiB
C++
115 lines
4 KiB
C++
//===-- driver/cl_options_instrumentation.cpp ------------------*- C++ -*-===//
|
||
//
|
||
// LDC – the LLVM D compiler
|
||
//
|
||
// This file is distributed under the BSD-style LDC license. See the LICENSE
|
||
// file for details.
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
//
|
||
// Defines the LDC command line options related to instrumentation, such as PGO
|
||
// -finstrument-functions, etc.
|
||
// Options for the instrumentation for the sanitizers is not part of this.
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
|
||
#include "driver/cl_options_instrumentation.h"
|
||
|
||
#include "errors.h"
|
||
#include "globals.h"
|
||
|
||
namespace {
|
||
namespace cl = llvm::cl;
|
||
|
||
#if LDC_LLVM_VER >= 309
|
||
/// Option for generating IR-based PGO instrumentation (LLVM pass)
|
||
cl::opt<std::string> IRPGOInstrGenFile(
|
||
"fprofile-generate", cl::value_desc("filename"),
|
||
cl::desc("Generate instrumented code to collect a runtime "
|
||
"profile into default.profraw (overriden by "
|
||
"'=<filename>' or LLVM_PROFILE_FILE env var)"),
|
||
cl::ZeroOrMore, cl::ValueOptional);
|
||
|
||
/// Option for generating IR-based PGO instrumentation (LLVM pass)
|
||
cl::opt<std::string> IRPGOInstrUseFile(
|
||
"fprofile-use", cl::ZeroOrMore, cl::value_desc("filename"),
|
||
cl::desc("Use instrumentation data for profile-guided optimization"),
|
||
cl::ValueRequired);
|
||
#endif
|
||
|
||
/// Option for generating frontend-based PGO instrumentation
|
||
cl::opt<std::string> ASTPGOInstrGenFile(
|
||
"fprofile-instr-generate", cl::value_desc("filename"),
|
||
cl::desc("Generate instrumented code to collect a runtime "
|
||
"profile into default.profraw (overriden by "
|
||
"'=<filename>' or LLVM_PROFILE_FILE env var)"),
|
||
cl::ZeroOrMore, cl::ValueOptional);
|
||
|
||
/// Option for generating frontend-based PGO instrumentation
|
||
cl::opt<std::string> ASTPGOInstrUseFile(
|
||
"fprofile-instr-use", cl::ZeroOrMore, cl::value_desc("filename"),
|
||
cl::desc("Use instrumentation data for profile-guided optimization"),
|
||
cl::ValueRequired);
|
||
|
||
} // anonymous namespace
|
||
|
||
namespace opts {
|
||
|
||
PGOKind pgoMode = PGO_None;
|
||
|
||
cl::opt<bool>
|
||
instrumentFunctions("finstrument-functions", cl::ZeroOrMore,
|
||
cl::desc("Instrument function entry and exit with "
|
||
"GCC-compatible profiling calls"));
|
||
|
||
// DMD-style profiling (`dmd -profile`)
|
||
static cl::opt<bool> dmdFunctionTrace(
|
||
"fdmd-trace-functions", cl::ZeroOrMore,
|
||
cl::desc("DMD-style runtime performance profiling of generated code"));
|
||
|
||
void initializeInstrumentationOptionsFromCmdline() {
|
||
if (ASTPGOInstrGenFile.getNumOccurrences() > 0) {
|
||
pgoMode = PGO_ASTBasedInstr;
|
||
if (ASTPGOInstrGenFile.empty()) {
|
||
#if LDC_LLVM_VER >= 309
|
||
// profile-rt provides a default filename by itself
|
||
global.params.datafileInstrProf = nullptr;
|
||
#else
|
||
global.params.datafileInstrProf = "default.profraw";
|
||
#endif
|
||
} else {
|
||
initFromPathString(global.params.datafileInstrProf, ASTPGOInstrGenFile);
|
||
}
|
||
} else if (!ASTPGOInstrUseFile.empty()) {
|
||
pgoMode = PGO_ASTBasedUse;
|
||
initFromPathString(global.params.datafileInstrProf, ASTPGOInstrUseFile);
|
||
}
|
||
#if LDC_LLVM_VER >= 309
|
||
else if (IRPGOInstrGenFile.getNumOccurrences() > 0) {
|
||
pgoMode = PGO_IRBasedInstr;
|
||
if (IRPGOInstrGenFile.empty()) {
|
||
global.params.datafileInstrProf = "default_%m.profraw";
|
||
} else {
|
||
initFromPathString(global.params.datafileInstrProf, IRPGOInstrGenFile);
|
||
}
|
||
} else if (!IRPGOInstrUseFile.empty()) {
|
||
pgoMode = PGO_IRBasedUse;
|
||
initFromPathString(global.params.datafileInstrProf, IRPGOInstrUseFile);
|
||
}
|
||
#endif
|
||
|
||
// There is a bug in (our use of?) LLVM where codegen errors with
|
||
// PGO_IRBasedInstr for Windows targets. So disable IRBased PGO on Windows for
|
||
// now.
|
||
assert(global.params.targetTriple);
|
||
if ((pgoMode == PGO_IRBasedInstr) &&
|
||
global.params.targetTriple->isOSWindows()) {
|
||
error(Loc(),
|
||
"'-fprofile-generate' is not yet supported for Windows targets.");
|
||
}
|
||
|
||
if (dmdFunctionTrace)
|
||
global.params.trace = true;
|
||
}
|
||
|
||
} // namespace opts
|