Index: include/clang/Driver/CC1Options.td =================================================================== --- include/clang/Driver/CC1Options.td +++ include/clang/Driver/CC1Options.td @@ -279,6 +279,12 @@ def fprofile_instrument_path_EQ : Joined<["-"], "fprofile-instrument-path=">, HelpText<"Generate instrumented code to collect execution counts into " " (overridden by LLVM_PROFILE_FILE env var)">; +def fprofile_instrument_use_EQ : Joined<["-"], "fprofile-instrument-use=">, + HelpText<"Enable PGO profile use compilation. The accepted value is clang, " + "llvm, or none">; +def fprofile_instrument_usepath_EQ : + Joined<["-"], "fprofile-instrument-usepath=">, + HelpText<"Specify the profile path in PGO use compilation">; //===----------------------------------------------------------------------===// // Dependency Output Options Index: include/clang/Driver/Options.td =================================================================== --- include/clang/Driver/Options.td +++ include/clang/Driver/Options.td @@ -456,7 +456,7 @@ def fprofile_instr_use : Flag<["-"], "fprofile-instr-use">, Group, Flags<[DriverOption]>; def fprofile_instr_use_EQ : Joined<["-"], "fprofile-instr-use=">, - Group, Flags<[CC1Option]>, + Group, Flags<[DriverOption]>, HelpText<"Use instrumentation data for profile-guided optimization">; def fcoverage_mapping : Flag<["-"], "fcoverage-mapping">, Group, Flags<[CC1Option]>, Index: include/clang/Frontend/CodeGenOptions.h =================================================================== --- include/clang/Frontend/CodeGenOptions.h +++ include/clang/Frontend/CodeGenOptions.h @@ -232,6 +232,16 @@ bool hasProfileIRInstr() const { return getProfileInstr() == ProfileIRInstr; } + + /// \brief Check if Clang profile use is on. + bool hasProfileClangUse () const { + return getProfileUse() == ProfileClangInstr; + } + + /// \brief Check if IR level profile use is on. + bool hasProfileIRUse () const { + return getProfileUse() == ProfileIRInstr; + } }; } // end namespace clang Index: include/clang/Frontend/CodeGenOptions.def =================================================================== --- include/clang/Frontend/CodeGenOptions.def +++ include/clang/Frontend/CodeGenOptions.def @@ -105,6 +105,8 @@ /// \brief Choose profile instrumenation kind or no instrumentation. ENUM_CODEGENOPT(ProfileInstr, ProfileInstrKind, 2, ProfileNone) +/// \brief Choose profile kind for PGO use compilation. +ENUM_CODEGENOPT(ProfileUse, ProfileInstrKind, 2, ProfileNone) CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to ///< enable code coverage analysis. CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping Index: lib/CodeGen/BackendUtil.cpp =================================================================== --- lib/CodeGen/BackendUtil.cpp +++ lib/CodeGen/BackendUtil.cpp @@ -443,6 +443,12 @@ else PMBuilder.PGOInstrGen = "default.profraw"; } + if (CodeGenOpts.hasProfileIRUse()) { + if (!CodeGenOpts.InstrProfileInput.empty()) + PMBuilder.PGOInstrUse = CodeGenOpts.InstrProfileInput; + else + PMBuilder.PGOInstrGen = "default.profdata"; + } if (!CodeGenOpts.SampleProfileFile.empty()) MPM->add(createSampleProfileLoaderPass(CodeGenOpts.SampleProfileFile)); Index: lib/CodeGen/CodeGenModule.cpp =================================================================== --- lib/CodeGen/CodeGenModule.cpp +++ lib/CodeGen/CodeGenModule.cpp @@ -149,7 +149,9 @@ if (C.getLangOpts().ObjC1) ObjCData = new ObjCEntrypoints(); - if (!CodeGenOpts.InstrProfileInput.empty()) { + if (CodeGenOpts.hasProfileClangUse()) { + assert(!CodeGenOpts.InstrProfileInput.empty() && + "Need to explicitly specify the profile name."); auto ReaderOrErr = llvm::IndexedInstrProfReader::create(CodeGenOpts.InstrProfileInput); if (std::error_code EC = ReaderOrErr.getError()) { Index: lib/Driver/Tools.cpp =================================================================== --- lib/Driver/Tools.cpp +++ lib/Driver/Tools.cpp @@ -3239,7 +3239,8 @@ if (ProfileUseArg) { if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ)) - ProfileUseArg->render(Args, CmdArgs); + CmdArgs.push_back(Args.MakeArgString( + Twine("-fprofile-instrument-usepath=") + ProfileUseArg->getValue())); else if ((ProfileUseArg->getOption().matches( options::OPT_fprofile_use_EQ) || ProfileUseArg->getOption().matches( @@ -3249,8 +3250,10 @@ if (Path.empty() || llvm::sys::fs::is_directory(Path)) llvm::sys::path::append(Path, "default.profdata"); CmdArgs.push_back( - Args.MakeArgString(Twine("-fprofile-instr-use=") + Path)); + Args.MakeArgString(Twine("-fprofile-instrument-usepath=") + Path)); } + // The default is to use Clang instrumentation profile. + CmdArgs.push_back("-fprofile-instrument-use=clang"); } if (Args.hasArg(options::OPT_ftest_coverage) || Index: lib/Frontend/CompilerInvocation.cpp =================================================================== --- lib/Frontend/CompilerInvocation.cpp +++ lib/Frontend/CompilerInvocation.cpp @@ -375,6 +375,15 @@ } } +enum PGOInstrumentor { ProfileUnknown, ProfileNone, ProfileClang, ProfileLLVM }; +static PGOInstrumentor getPGOInstrumentor(StringRef S) { + return llvm::StringSwitch(S) + .Case("none", ProfileNone) + .Case("clang", ProfileClang) + .Case("llvm", ProfileLLVM) + .Default(ProfileUnknown); +} + static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, DiagnosticsEngine &Diags, const TargetOptions &TargetOpts) { @@ -481,33 +490,48 @@ Opts.Autolink = !Args.hasArg(OPT_fno_autolink); Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); - enum PGOInstrumentor { Unknown, None, Clang, LLVM }; if (Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ)) { - StringRef Value = A->getValue(); - PGOInstrumentor Method = llvm::StringSwitch(Value) - .Case("none", None) - .Case("clang", Clang) - .Case("llvm", LLVM) - .Default(Unknown); + PGOInstrumentor Method = getPGOInstrumentor(A->getValue()); switch (Method) { - case LLVM: + case ProfileLLVM: Opts.setProfileInstr(CodeGenOptions::ProfileIRInstr); break; - case Clang: + case ProfileClang: Opts.setProfileInstr(CodeGenOptions::ProfileClangInstr); break; - case None: + case ProfileNone: + // Null operation -- The default is ProfileNone. + break; + case ProfileUnknown: + Diags.Report(diag::err_drv_invalid_pgo_instrumentor) + << A->getAsString(Args) << A->getValue(); + break; + } + } + + if (Arg *A = Args.getLastArg(OPT_fprofile_instrument_use_EQ)) { + PGOInstrumentor Method = getPGOInstrumentor(A->getValue()); + switch (Method) { + case ProfileLLVM: + Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); + break; + case ProfileClang: + Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); + break; + case ProfileNone: // Null operation -- The default is ProfileNone. break; - case Unknown: + case ProfileUnknown: Diags.Report(diag::err_drv_invalid_pgo_instrumentor) - << A->getAsString(Args) << Value; + << A->getAsString(Args) << A->getValue(); break; } } - Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); - Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); + Opts.InstrProfileOutput = + Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); + Opts.InstrProfileInput = + Args.getLastArgValue(OPT_fprofile_instrument_usepath_EQ); Opts.CoverageMapping = Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); Index: test/CodeGen/Inputs/pgotestclang.profraw =================================================================== --- test/CodeGen/Inputs/pgotestclang.profraw +++ test/CodeGen/Inputs/pgotestclang.profraw @@ -0,0 +1 @@ +:fe Index: test/CodeGen/Inputs/pgotestir.profraw =================================================================== --- test/CodeGen/Inputs/pgotestir.profraw +++ test/CodeGen/Inputs/pgotestir.profraw @@ -0,0 +1 @@ +:ir Index: test/CodeGen/pgo-instrumentation.c =================================================================== --- test/CodeGen/pgo-instrumentation.c +++ test/CodeGen/pgo-instrumentation.c @@ -7,3 +7,14 @@ // Ensure Pass PGOInstrumentationGenPass is not invoked. // RUN: %clang_cc1 -O2 -fprofile-instrument=clang %s -mllvm -debug-pass=Structure -emit-llvm -o - 2>&1 | FileCheck %s -check-prefix=CHECK-PGOGENPASS-INVOKED-INSTR-GEN-CLANG // CHECK-PGOGENPASS-INVOKED-INSTR-GEN-CLANG-NOT: PGOInstrumentationGenPass + +// Ensure Pass PGOInstrumentationUsePass is invoked. +// RUN: llvm-profdata merge -o %t.profdata %S/Inputs/pgotestir.profraw +// RUN: %clang_cc1 -O2 -fprofile-instrument-use=llvm -fprofile-instrument-usepath=%t.profdata %s -mllvm -debug-pass=Structure -emit-llvm -o - 2>&1 | FileCheck %s -check-prefix=CHECK-PGOUSEPASS-INVOKED-INSTR-USE +// CHECK-PGOUSEPASS-INVOKED-INSTR-USE: PGOInstrumentationUsePass +// +// Ensure Pass PGOInstrumentationUsePass is not invoked. +// RUN: llvm-profdata merge -o %t.profdata %S/Inputs/pgotestclang.profraw +// RUN: %clang_cc1 -O2 -fprofile-instrument-use=clang -fprofile-instrument-usepath=%t.profdata %s -mllvm -debug-pass=Structure -emit-llvm -o - 2>&1 | FileCheck %s -check-prefix=CHECK-PGOUSEPASS-INVOKED-USE-CLANG +// CHECK-PGOUSEPASS-INVOKED-USE-CLANG-NOT: PGOInstrumentationUsePass + Index: test/Driver/clang_f_opts.c =================================================================== --- test/Driver/clang_f_opts.c +++ test/Driver/clang_f_opts.c @@ -111,9 +111,12 @@ // RUN: mkdir -p %t.d/some/dir // RUN: %clang -### -S -fprofile-use=%t.d/some/dir %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE-DIR %s // RUN: %clang -### -S -fprofile-instr-use=/tmp/somefile.prof %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE-FILE %s -// CHECK-PROFILE-USE: "-fprofile-instr-use=default.profdata" -// CHECK-PROFILE-USE-DIR: "-fprofile-instr-use={{.*}}.d/some/dir{{/|\\\\}}default.profdata" -// CHECK-PROFILE-USE-FILE: "-fprofile-instr-use=/tmp/somefile.prof" +// CHECK-PROFILE-USE-DAG: "-fprofile-instrument-use=clang +// CHECK-PROFILE-USE-DAG: "-fprofile-instrument-usepath=default.profdata" +// CHECK-PROFILE-USE-DIR-DAG: "-fprofile-instrument-use=clang +// CHECK-PROFILE-USE-DIR-DAG: "-fprofile-instrument-usepath={{.*}}.d/some/dir{{/|\\\\}}default.profdata" +// CHECK-PROFILE-USE-FILE-DAG: "-fprofile-instrument-use=clang +// CHECK-PROFILE-USE-FILE-DAG: "-fprofile-instrument-usepath=/tmp/somefile.prof" // RUN: %clang -### -S -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s // RUN: %clang -### -S -fno-vectorize -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s Index: test/Profile/c-captured.c =================================================================== --- test/Profile/c-captured.c +++ test/Profile/c-captured.c @@ -1,7 +1,7 @@ // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-captured.c %s -o - -emit-llvm -fprofile-instrument=clang | FileCheck -check-prefix=PGOGEN -check-prefix=PGOALL %s // RUN: llvm-profdata merge %S/Inputs/c-captured.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-captured.c %s -o - -emit-llvm -fprofile-instr-use=%t.profdata | FileCheck -check-prefix=PGOUSE -check-prefix=PGOALL %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-captured.c %s -o - -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang | FileCheck -check-prefix=PGOUSE -check-prefix=PGOALL %s // PGOGEN: @[[DCC:__profc_debug_captured]] = private global [3 x i64] zeroinitializer // PGOGEN: @[[CSC:__profc_c_captured.c___captured_stmt]] = private global [2 x i64] zeroinitializer Index: test/Profile/c-counter-overflows.c =================================================================== --- test/Profile/c-counter-overflows.c +++ test/Profile/c-counter-overflows.c @@ -2,7 +2,7 @@ // truncated. // RUN: llvm-profdata merge %S/Inputs/c-counter-overflows.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-counter-overflows.c %s -o - -emit-llvm -fprofile-instr-use=%t.profdata | FileCheck %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-counter-overflows.c %s -o - -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang | FileCheck %s typedef unsigned long long uint64_t; Index: test/Profile/c-general.c =================================================================== --- test/Profile/c-general.c +++ test/Profile/c-general.c @@ -3,10 +3,10 @@ // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instrument=clang | FileCheck -check-prefix=PGOGEN %s // RUN: llvm-profdata merge %S/Inputs/c-general.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instr-use=%t.profdata | FileCheck -check-prefix=PGOUSE %s -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instr-use=%S/Inputs/c-general.profdata.v3 | FileCheck -check-prefix=PGOUSE %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang | FileCheck -check-prefix=PGOUSE %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instrument-usepath=%S/Inputs/c-general.profdata.v3 -fprofile-instrument-use=clang | FileCheck -check-prefix=PGOUSE %s // Also check compatibility with older profiles. -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instr-use=%S/Inputs/c-general.profdata.v1 | FileCheck -check-prefix=PGOUSE %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instrument-usepath=%S/Inputs/c-general.profdata.v1 -fprofile-instrument-use=clang | FileCheck -check-prefix=PGOUSE %s // PGOGEN: @[[SLC:__profc_simple_loops]] = private global [4 x i64] zeroinitializer // PGOGEN: @[[IFC:__profc_conditionals]] = private global [11 x i64] zeroinitializer Index: test/Profile/c-outdated-data.c =================================================================== --- test/Profile/c-outdated-data.c +++ test/Profile/c-outdated-data.c @@ -4,7 +4,7 @@ // doesn't play well with warnings that have no line number. // RUN: llvm-profdata merge %S/Inputs/c-outdated-data.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instr-use=%t.profdata -Wprofile-instr-dropped 2>&1 | FileCheck %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang -Wprofile-instr-dropped 2>&1 | FileCheck %s // CHECK: warning: profile data may be out of date: of 3 functions, 1 has no data and 1 has mismatched data that will be ignored void no_usable_data() { Index: test/Profile/c-unprofiled-blocks.c =================================================================== --- test/Profile/c-unprofiled-blocks.c +++ test/Profile/c-unprofiled-blocks.c @@ -2,7 +2,7 @@ // runs) shouldn't have any branch weight metadata added. // RUN: llvm-profdata merge %S/Inputs/c-unprofiled-blocks.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-unprofiled-blocks.c %s -o - -emit-llvm -fprofile-instr-use=%t.profdata | FileCheck -check-prefix=PGOUSE %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-unprofiled-blocks.c %s -o - -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang | FileCheck -check-prefix=PGOUSE %s // PGOUSE-LABEL: @never_called(i32 %i) int never_called(int i) { Index: test/Profile/c-unprofiled.c =================================================================== --- test/Profile/c-unprofiled.c +++ test/Profile/c-unprofiled.c @@ -7,7 +7,7 @@ // doesn't play well with warnings that have no line number. // RUN: llvm-profdata merge %S/Inputs/c-unprofiled.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-unprofiled.c -I %S/Inputs/ %s -o /dev/null -emit-llvm -fprofile-instr-use=%t.profdata -Wprofile-instr-unprofiled 2>&1 | FileCheck %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-unprofiled.c -I %S/Inputs/ %s -o /dev/null -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang -Wprofile-instr-unprofiled 2>&1 | FileCheck %s // CHECK: warning: no profile data available for file "c-unprofiled.c" Index: test/Profile/cxx-lambda.cpp =================================================================== --- test/Profile/cxx-lambda.cpp +++ test/Profile/cxx-lambda.cpp @@ -5,7 +5,7 @@ // RUN: FileCheck --input-file=%tgen -check-prefix=LMBGEN %s // RUN: llvm-profdata merge %S/Inputs/cxx-lambda.proftext -o %t.profdata -// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-lambda.cpp -std=c++11 -o - -emit-llvm -fprofile-instr-use=%t.profdata > %tuse +// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-lambda.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang > %tuse // RUN: FileCheck --input-file=%tuse -check-prefix=PGOUSE %s // RUN: FileCheck --input-file=%tuse -check-prefix=LMBUSE %s Index: test/Profile/cxx-rangefor.cpp =================================================================== --- test/Profile/cxx-rangefor.cpp +++ test/Profile/cxx-rangefor.cpp @@ -4,7 +4,7 @@ // RUN: FileCheck --input-file=%tgen -check-prefix=CHECK -check-prefix=PGOGEN %s // RUN: llvm-profdata merge %S/Inputs/cxx-rangefor.proftext -o %t.profdata -// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instr-use=%t.profdata > %tuse +// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang > %tuse // RUN: FileCheck --input-file=%tuse -check-prefix=CHECK -check-prefix=PGOUSE %s // PGOGEN: @[[RFC:__profc__Z9range_forv]] = private global [5 x i64] zeroinitializer Index: test/Profile/cxx-templates.cpp =================================================================== --- test/Profile/cxx-templates.cpp +++ test/Profile/cxx-templates.cpp @@ -6,7 +6,7 @@ // RUN: FileCheck --input-file=%tgen -check-prefix=T100GEN -check-prefix=ALL %s // RUN: llvm-profdata merge %S/Inputs/cxx-templates.proftext -o %t.profdata -// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-templates.cpp -std=c++11 -o - -emit-llvm -fprofile-instr-use=%t.profdata > %tuse +// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-templates.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang > %tuse // RUN: FileCheck --input-file=%tuse -check-prefix=T0USE -check-prefix=ALL %s // RUN: FileCheck --input-file=%tuse -check-prefix=T100USE -check-prefix=ALL %s Index: test/Profile/objc-general.m =================================================================== --- test/Profile/objc-general.m +++ test/Profile/objc-general.m @@ -3,7 +3,7 @@ // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name objc-general.m %s -o - -emit-llvm -fblocks -fprofile-instrument=clang | FileCheck -check-prefix=PGOGEN %s // RUN: llvm-profdata merge %S/Inputs/objc-general.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name objc-general.m %s -o - -emit-llvm -fblocks -fprofile-instr-use=%t.profdata | FileCheck -check-prefix=PGOUSE %s +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name objc-general.m %s -o - -emit-llvm -fblocks -fprofile-instrument-usepath=%t.profdata -fprofile-instrument-use=clang | FileCheck -check-prefix=PGOUSE %s #ifdef HAVE_FOUNDATION Index: test/Profile/profile-does-not-exist.c =================================================================== --- test/Profile/profile-does-not-exist.c +++ test/Profile/profile-does-not-exist.c @@ -1,4 +1,4 @@ -// RUN: not %clang_cc1 -emit-llvm %s -o - -fprofile-instr-use=%t.nonexistent.profdata 2>&1 | FileCheck %s +// RUN: not %clang_cc1 -emit-llvm %s -o - -fprofile-instrument-usepath=%t.nonexistent.profdata -fprofile-instrument-use=clang 2>&1 | FileCheck %s // CHECK: error: Could not read profile {{.*}}.nonexistent.profdata: // CHECK-NOT: Assertion failed