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Add flags to disable profile generation.
This patch adds flags -fno-profile-instr-generate and -fno-profile-instr-use, and the GCC aliases -fno-profile-generate and -fno-profile-use. These flags are used in situations where users need to disable profile generation or use for specific files in a build, without affecting other files. llvm-svn: 244153
This commit is contained in:
Diego Novillo
parent
70926aed6b
commit
758f3f542a
@ -1534,6 +1534,19 @@ with respect to profile creation and use.
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profile file, it reads from that file. If ``pathname`` is a directory name,
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it reads from ``pathname/default.profdata``.
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Disabling Instrumentation
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^^^^^^^^^^^^^^^^^^^^^^^^^
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In certain situations, it may be useful to disable profile generation or use
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for specific files in a build, without affecting the main compilation flags
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used for the other files in the project.
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In these cases, you can use the flag ``-fno-profile-instr-generate`` (or
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``-fno-profile-generate``) to disable profile generation, and
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``-fno-profile-instr-use`` (or ``-fno-profile-use``) to disable profile use.
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Note that these flags should appear after the corresponding profile
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flags to have an effect.
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Controlling Size of Debug Information
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-------------------------------------
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@ -446,6 +446,16 @@ def fprofile_use : Flag<["-"], "fprofile-use">, Group<f_Group>,
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def fprofile_use_EQ : Joined<["-"], "fprofile-use=">,
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Group<f_Group>, Flags<[DriverOption]>, MetaVarName<"<pathname>">,
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HelpText<"Use instrumentation data for profile-guided optimization. If pathname is a directory, it reads from <pathname>/default.profdata. Otherwise, it reads from file <pathname>.">;
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def fno_profile_instr_generate : Flag<["-"], "fno-profile-instr-generate">,
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Group<f_Group>, Flags<[DriverOption]>,
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HelpText<"Disable generation of profile instrumentation.">;
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def fno_profile_generate : Flag<["-"], "fno-profile-generate">,
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Alias<fno_profile_instr_generate>;
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def fno_profile_instr_use : Flag<["-"], "fno-profile-instr-use">,
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Group<f_Group>, Flags<[DriverOption]>,
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HelpText<"Disable using instrumentation data for profile-guided optimization">;
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def fno_profile_use : Flag<["-"], "fno-profile-use">,
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Alias<fno_profile_instr_use>;
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def fblocks : Flag<["-"], "fblocks">, Group<f_Group>, Flags<[CC1Option]>,
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HelpText<"Enable the 'blocks' language feature">;
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@ -2848,42 +2848,53 @@ static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
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auto *ProfileGenerateArg = Args.getLastArg(
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options::OPT_fprofile_instr_generate,
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options::OPT_fprofile_instr_generate_EQ, options::OPT_fprofile_generate,
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options::OPT_fprofile_generate_EQ);
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options::OPT_fprofile_generate_EQ,
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options::OPT_fno_profile_instr_generate);
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if (ProfileGenerateArg &&
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ProfileGenerateArg->getOption().matches(
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options::OPT_fno_profile_instr_generate))
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ProfileGenerateArg = nullptr;
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auto *ProfileUseArg = Args.getLastArg(
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options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
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options::OPT_fprofile_use, options::OPT_fprofile_use_EQ);
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options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
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options::OPT_fno_profile_instr_use);
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if (ProfileUseArg &&
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ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
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ProfileUseArg = nullptr;
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if (ProfileGenerateArg && ProfileUseArg)
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D.Diag(diag::err_drv_argument_not_allowed_with)
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<< ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
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if (ProfileGenerateArg &&
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ProfileGenerateArg->getOption().matches(
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options::OPT_fprofile_instr_generate_EQ))
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ProfileGenerateArg->render(Args, CmdArgs);
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else if (ProfileGenerateArg &&
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ProfileGenerateArg->getOption().matches(
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options::OPT_fprofile_generate_EQ)) {
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SmallString<128> Path(ProfileGenerateArg->getValue());
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llvm::sys::path::append(Path, "default.profraw");
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CmdArgs.push_back(
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Args.MakeArgString(Twine("-fprofile-instr-generate=") + Path));
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} else
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Args.AddAllArgs(CmdArgs, options::OPT_fprofile_instr_generate);
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if (ProfileGenerateArg) {
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if (ProfileGenerateArg->getOption().matches(
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options::OPT_fprofile_instr_generate_EQ))
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ProfileGenerateArg->render(Args, CmdArgs);
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else if (ProfileGenerateArg->getOption().matches(
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options::OPT_fprofile_generate_EQ)) {
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SmallString<128> Path(ProfileGenerateArg->getValue());
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llvm::sys::path::append(Path, "default.profraw");
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CmdArgs.push_back(
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Args.MakeArgString(Twine("-fprofile-instr-generate=") + Path));
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} else
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Args.AddAllArgs(CmdArgs, options::OPT_fprofile_instr_generate);
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}
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if (ProfileUseArg &&
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ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
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ProfileUseArg->render(Args, CmdArgs);
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else if (ProfileUseArg &&
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(ProfileUseArg->getOption().matches(options::OPT_fprofile_use_EQ) ||
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ProfileUseArg->getOption().matches(
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options::OPT_fprofile_instr_use))) {
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SmallString<128> Path(
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ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
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if (Path.empty() || llvm::sys::fs::is_directory(Path))
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llvm::sys::path::append(Path, "default.profdata");
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CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instr-use=") + Path));
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if (ProfileUseArg) {
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if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
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ProfileUseArg->render(Args, CmdArgs);
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else if ((ProfileUseArg->getOption().matches(
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options::OPT_fprofile_use_EQ) ||
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ProfileUseArg->getOption().matches(
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options::OPT_fprofile_instr_use))) {
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SmallString<128> Path(
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ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
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if (Path.empty() || llvm::sys::fs::is_directory(Path))
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llvm::sys::path::append(Path, "default.profdata");
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CmdArgs.push_back(
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Args.MakeArgString(Twine("-fprofile-instr-use=") + Path));
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}
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}
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if (Args.hasArg(options::OPT_ftest_coverage) ||
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@ -86,10 +86,20 @@
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// RUN: %clang -### -S -fprofile-generate=dir -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
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// RUN: %clang -### -S -fprofile-generate=dir -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
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// RUN: %clang -### -S -fprofile-generate=dir -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
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// RUN: %clang -### -S -fprofile-instr-generate=file -fno-profile-instr-generate %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-GEN %s
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// RUN: %clang -### -S -fprofile-instr-generate=file -fno-profile-generate %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-GEN %s
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// RUN: %clang -### -S -fprofile-generate=dir -fno-profile-generate %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-GEN %s
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// RUN: %clang -### -S -fprofile-generate=dir -fno-profile-instr-generate %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-GEN %s
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// RUN: %clang -### -S -fprofile-instr-use=file -fno-profile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
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// RUN: %clang -### -S -fprofile-instr-use=file -fno-profile-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
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// RUN: %clang -### -S -fprofile-use=file -fno-profile-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
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// RUN: %clang -### -S -fprofile-use=file -fno-profile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
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// CHECK-PROFILE-GENERATE: "-fprofile-instr-generate"
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// CHECK-PROFILE-GENERATE-DIR: "-fprofile-instr-generate=/some/dir{{/|\\\\}}default.profraw"
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// CHECK-PROFILE-GENERATE-FILE: "-fprofile-instr-generate=/tmp/somefile.profraw"
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// CHECK-NO-MIX-GEN-USE: '{{[a-z=-]*}}' not allowed with '{{[a-z=-]*}}'
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// CHECK-DISABLE-GEN-NOT: "-fprofile-instr-generate"
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// CHECK-DISABLE-USE-NOT: "-fprofile-instr-use"
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// RUN: %clang -### -S -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE %s
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// RUN: %clang -### -S -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE %s
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