Author: Hongtao Yu Date: 2021-02-02T09:43:57-08:00 New Revision: d3e2e3740d0730cb6788c771bb01a8f3e935bf2e
URL: https://github.com/llvm/llvm-project/commit/d3e2e3740d0730cb6788c771bb01a8f3e935bf2e DIFF: https://github.com/llvm/llvm-project/commit/d3e2e3740d0730cb6788c771bb01a8f3e935bf2e.diff LOG: [CSSPGO] Passing the clang driver switch -fpseudo-probe-for-profiling to the linker. As titled. Reviewed By: wmi, wenlei Differential Revision: https://reviews.llvm.org/D95271 Added: clang/test/Driver/pseudo-probe-lto.c Modified: clang/include/clang/Driver/Options.td clang/lib/Driver/ToolChains/CommonArgs.cpp Removed: ################################################################################ diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td index aee312ea8e8a..edaa42741062 100644 --- a/clang/include/clang/Driver/Options.td +++ b/clang/include/clang/Driver/Options.td @@ -1155,7 +1155,7 @@ def fprofile_update_EQ : Joined<["-"], "fprofile-update=">, defm pseudo_probe_for_profiling : BoolFOption<"pseudo-probe-for-profiling", CodeGenOpts<"PseudoProbeForProfiling">, DefaultFalse, PosFlag<SetTrue, [], "Emit">, NegFlag<SetFalse, [], "Do not emit">, - BothFlags<[NoXarchOption, CC1Option], " pseudo probes for sample profiler">>; + BothFlags<[NoXarchOption, CC1Option], " pseudo probes for sample profiling">>; def forder_file_instrumentation : Flag<["-"], "forder-file-instrumentation">, Group<f_Group>, Flags<[CC1Option, CoreOption]>, HelpText<"Generate instrumented code to collect order file into default.profraw file (overridden by '=' form of option or LLVM_PROFILE_FILE env var)">; diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp index 6a95aa5ec628..bcaea71dca94 100644 --- a/clang/lib/Driver/ToolChains/CommonArgs.cpp +++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp @@ -605,6 +605,11 @@ void tools::addLTOOptions(const ToolChain &ToolChain, const ArgList &Args, CmdArgs.push_back("-plugin-opt=new-pass-manager"); } + // Pass an option to enable pseudo probe emission. + if (Args.hasFlag(options::OPT_fpseudo_probe_for_profiling, + options::OPT_fno_pseudo_probe_for_profiling, false)) + CmdArgs.push_back("-plugin-opt=pseudo-probe-for-profiling"); + // Setup statistics file output. SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D); if (!StatsFile.empty()) diff --git a/clang/test/Driver/pseudo-probe-lto.c b/clang/test/Driver/pseudo-probe-lto.c new file mode 100644 index 000000000000..e319b8c0098b --- /dev/null +++ b/clang/test/Driver/pseudo-probe-lto.c @@ -0,0 +1,10 @@ +// RUN: touch %t.o +// RUN: %clang -### %t.o -target x86_64-unknown-linux -flto -fpseudo-probe-for-profiling 2>&1 | FileCheck %s --check-prefix=PROBE +// RUN: %clang -### %t.o -target x86_64-unknown-linux -flto=thin -fpseudo-probe-for-profiling 2>&1 | FileCheck %s --check-prefix=PROBE +// RUN: %clang -### %t.o -target x86_64-unknown-linux -flto -fno-pseudo-probe-for-profiling -fpseudo-probe-for-profiling 2>&1 | FileCheck %s --check-prefix=PROBE +// RUN: %clang -### %t.o -target x86_64-unknown-linux -flto 2>&1 | FileCheck %s --check-prefix=NOPROBE +// RUN: %clang -### %t.o -target x86_64-unknown-linux -flto -fno-pseudo-probe-for-profiling 2>&1 | FileCheck %s --check-prefix=NOPROBE +// RUN: %clang -### %t.o -target x86_64-unknown-linux -flto -fpseudo-probe-for-profiling -fno-pseudo-probe-for-profiling 2>&1 | FileCheck %s --check-prefix=NOPROBE + +// PROBE: -plugin-opt=pseudo-probe-for-profiling +// NOPROBE-NOT: -plugin-opt=pseudo-probe-for-profiling _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits