diff -up firefox-112.0/build/moz.configure/lto-pgo.configure.pgo firefox-112.0/build/moz.configure/lto-pgo.configure --- firefox-112.0/build/moz.configure/lto-pgo.configure.pgo 2023-04-06 17:27:38.000000000 +0200 +++ firefox-112.0/build/moz.configure/lto-pgo.configure 2023-04-06 21:27:32.537089073 +0200 @@ -247,8 +247,8 @@ def lto( cflags.append("-flto") ldflags.append("-flto") else: - cflags.append("-flto=thin") - ldflags.append("-flto=thin") + cflags.append("-flto") + ldflags.append("-flto") if target.os == "Android" and value == "cross": # Work around https://github.com/rust-lang/rust/issues/90088 @@ -264,7 +264,7 @@ def lto( if value == "full": cflags.append("-flto") else: - cflags.append("-flto=thin") + cflags.append("-flto") # With clang-cl, -flto can only be used with -c or -fuse-ld=lld. # AC_TRY_LINKs during configure don't have -c, so pass -fuse-ld=lld. cflags.append("-fuse-ld=lld") diff -up firefox-112.0/build/pgo/profileserver.py.pgo firefox-112.0/build/pgo/profileserver.py --- firefox-112.0/build/pgo/profileserver.py.pgo 2023-04-06 17:27:40.000000000 +0200 +++ firefox-112.0/build/pgo/profileserver.py 2023-04-06 21:29:33.772294479 +0200 @@ -11,7 +11,7 @@ import subprocess import sys import mozcrash -from mozbuild.base import BinaryNotFoundException, MozbuildObject +from mozbuild.base import BinaryNotFoundException, MozbuildObject, BuildEnvironmentNotFoundException from mozfile import TemporaryDirectory from mozhttpd import MozHttpd from mozprofile import FirefoxProfile, Preferences @@ -87,9 +87,22 @@ if __name__ == "__main__": locations = ServerLocations() locations.add_host(host="127.0.0.1", port=PORT, options="primary,privileged") - old_profraw_files = glob.glob("*.profraw") - for f in old_profraw_files: - os.remove(f) + using_gcc = False + try: + if build.config_environment.substs.get('CC_TYPE') == 'gcc': + using_gcc = True + except BuildEnvironmentNotFoundException: + pass + + if using_gcc: + for dirpath, _, filenames in os.walk('.'): + for f in filenames: + if f.endswith('.gcda'): + os.remove(os.path.join(dirpath, f)) + else: + old_profraw_files = glob.glob('*.profraw') + for f in old_profraw_files: + os.remove(f) with TemporaryDirectory() as profilePath: # TODO: refactor this into mozprofile @@ -213,6 +226,10 @@ if __name__ == "__main__": print("Firefox exited successfully, but produced a crashreport") sys.exit(1) + print('Copying profile data....') + os.system('pwd'); + os.system('tar cf profdata.tar.gz `find . -name "*.gcda"`; cd ..; tar xf instrumented/profdata.tar.gz;'); + llvm_profdata = env.get("LLVM_PROFDATA") if llvm_profdata: profraw_files = glob.glob("*.profraw") diff -up firefox-112.0/build/unix/mozconfig.unix.pgo firefox-112.0/build/unix/mozconfig.unix --- firefox-112.0/build/unix/mozconfig.unix.pgo 2023-04-06 21:27:32.537089073 +0200 +++ firefox-112.0/build/unix/mozconfig.unix 2023-04-06 21:28:54.987949124 +0200 @@ -4,6 +4,15 @@ if [ -n "$FORCE_GCC" ]; then CC="$MOZ_FETCHES_DIR/gcc/bin/gcc" CXX="$MOZ_FETCHES_DIR/gcc/bin/g++" + if [ -n "$MOZ_PGO" ]; then + if [ -z "$USE_ARTIFACT" ]; then + ac_add_options --enable-lto + fi + export AR="$topsrcdir/gcc/bin/gcc-ar" + export NM="$topsrcdir/gcc/bin/gcc-nm" + export RANLIB="$topsrcdir/gcc/bin/gcc-ranlib" + fi + # We want to make sure we use binutils and other binaries in the tooltool # package. mk_add_options "export PATH=$MOZ_FETCHES_DIR/gcc/bin:$MOZ_FETCHES_DIR/binutils/bin:$PATH" diff -up firefox-112.0/extensions/spellcheck/src/moz.build.pgo firefox-112.0/extensions/spellcheck/src/moz.build --- firefox-112.0/extensions/spellcheck/src/moz.build.pgo 2023-04-06 17:27:41.000000000 +0200 +++ firefox-112.0/extensions/spellcheck/src/moz.build 2023-04-06 21:27:32.537089073 +0200 @@ -28,3 +28,5 @@ EXPORTS.mozilla += [ "mozInlineSpellChecker.h", "mozSpellChecker.h", ] + +CXXFLAGS += ['-fno-devirtualize'] diff -up firefox-112.0/toolkit/components/terminator/nsTerminator.cpp.pgo firefox-112.0/toolkit/components/terminator/nsTerminator.cpp --- firefox-112.0/toolkit/components/terminator/nsTerminator.cpp.pgo 2023-04-06 17:27:57.000000000 +0200 +++ firefox-112.0/toolkit/components/terminator/nsTerminator.cpp 2023-04-06 21:27:32.538089108 +0200 @@ -460,6 +460,11 @@ void nsTerminator::StartWatchdog() { } #endif + // Disable watchdog for PGO train builds - writting profile information at + // exit may take time and it is better to make build hang rather than + // silently produce poorly performing binary. + crashAfterMS = INT32_MAX; + UniquePtr options(new Options()); // crashAfterTicks is guaranteed to be > 0 as // crashAfterMS >= ADDITIONAL_WAIT_BEFORE_CRASH_MS >> HEARTBEAT_INTERVAL_MS