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Bug 676252 part 2 - Use a different object file extension for the first PGO build pass with GCC. r=ted
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@ -47,6 +47,7 @@ INTERNAL_TOOLS = 1
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HOST_PROGRAM = elfhack
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NO_DIST_INSTALL = 1
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NO_PROFILE_GUIDED_OPTIMIZE = 1
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VPATH += $(topsrcdir)/build
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@ -350,7 +350,10 @@ _MSC_VER = @_MSC_VER@
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DLL_PREFIX = @DLL_PREFIX@
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LIB_PREFIX = @LIB_PREFIX@
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OBJ_SUFFIX = @OBJ_SUFFIX@
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# We do magic with OBJ_SUFFIX in config.mk, the following ensures we don't
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# manually use it before config.mk inclusion
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OBJ_SUFFIX = $(error config/config.mk needs to be included before using OBJ_SUFFIX)
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_OBJ_SUFFIX = @OBJ_SUFFIX@
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LIB_SUFFIX = @LIB_SUFFIX@
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DLL_SUFFIX = @DLL_SUFFIX@
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BIN_SUFFIX = @BIN_SUFFIX@
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@ -790,3 +790,21 @@ EXPAND_MKSHLIB = $(EXPAND_LIBS_EXEC) --uselist -- $(MKSHLIB)
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ifdef STDCXX_COMPAT
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CHECK_STDCXX = objdump -p $(1) | grep -e 'GLIBCXX_3\.4\.\(9\|[1-9][0-9]\)' > /dev/null && echo "TEST-UNEXPECTED-FAIL | | We don't want these libstdc++ symbols to be used:" && objdump -T $(1) | grep -e 'GLIBCXX_3\.4\.\(9\|[1-9][0-9]\)' && exit 1 || exit 0
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endif
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# autoconf.mk sets OBJ_SUFFIX to an error to avoid use before including
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# this file
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OBJ_SUFFIX := $(_OBJ_SUFFIX)
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# PGO builds with GCC build objects with instrumentation in a first pass,
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# then objects optimized, without instrumentation, in a second pass. If
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# we overwrite the ojects from the first pass with those from the second,
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# we end up not getting instrumentation data for better optimization on
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# incremental builds. As a consequence, we use a different object suffix
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# for the first pass.
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ifndef NO_PROFILE_GUIDED_OPTIMIZE
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ifdef MOZ_PROFILE_GENERATE
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ifdef GNU_CC
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OBJ_SUFFIX := i_o
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endif
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endif
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endif
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@ -93,7 +93,7 @@ class ExpandArgsMore(ExpandArgs):
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subprocess.call(ar_extract + [os.path.abspath(arg)], cwd=tmp)
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objs = []
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for root, dirs, files in os.walk(tmp):
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objs += [relativize(os.path.join(root, f)) for f in files if os.path.splitext(f)[1] == conf.OBJ_SUFFIX]
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objs += [relativize(os.path.join(root, f)) for f in files if os.path.splitext(f)[1] in [conf.OBJ_SUFFIX, '.i_o']]
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newlist += objs
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else:
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newlist += [arg]
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@ -46,7 +46,7 @@ from expandlibs import LibDescriptor
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def generate(args):
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desc = LibDescriptor()
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for arg in args:
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if os.path.splitext(arg)[1] == conf.OBJ_SUFFIX:
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if os.path.splitext(arg)[1] in [conf.OBJ_SUFFIX, '.i_o']:
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desc['OBJS'].append(os.path.abspath(arg))
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elif os.path.splitext(arg)[1] == conf.LIB_SUFFIX and \
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(os.path.exists(arg) or os.path.exists(arg + conf.LIBS_DESC_SUFFIX)):
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@ -421,7 +421,7 @@ endif
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ALL_TRASH = \
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$(GARBAGE) $(TARGETS) $(OBJS) $(PROGOBJS) LOGS TAGS a.out \
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$(filter-out $(ASFILES),$(OBJS:.$(OBJ_SUFFIX)=.s)) $(OBJS:.$(OBJ_SUFFIX)=.ii) \
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$(OBJS:.$(OBJ_SUFFIX)=.i) \
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$(OBJS:.$(OBJ_SUFFIX)=.i) $(OBJS:.$(OBJ_SUFFIX)=.i_o) \
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$(HOST_PROGOBJS) $(HOST_OBJS) $(IMPORT_LIBRARY) $(DEF_FILE)\
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$(EXE_DEF_FILE) so_locations _gen _stubs $(wildcard *.res) $(wildcard *.RES) \
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$(wildcard *.pdb) $(CODFILE) $(MAPFILE) $(IMPORT_LIBRARY) \
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@ -948,6 +948,15 @@ ifdef GNU_CC
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endif
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endif
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endif
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ifneq (,$(MOZ_PROFILE_GENERATE)$(MOZ_PROFILE_USE))
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ifdef GNU_CC
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# Force rebuilding libraries and programs in both passes because each
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# pass uses different object files.
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$(PROGRAM) $(SHARED_LIBRARY) $(LIBRARY): FORCE
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endif
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endif
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endif # NO_PROFILE_GUIDED_OPTIMIZE
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##############################################
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@ -177,7 +177,10 @@ _MSC_VER = @_MSC_VER@
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DLL_PREFIX = @DLL_PREFIX@
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LIB_PREFIX = @LIB_PREFIX@
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OBJ_SUFFIX = @OBJ_SUFFIX@
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# We do magic with OBJ_SUFFIX in config.mk, the following ensures we don't
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# manually use it before config.mk inclusion
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OBJ_SUFFIX = $(error config/config.mk needs to be included before using OBJ_SUFFIX)
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_OBJ_SUFFIX = @OBJ_SUFFIX@
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LIB_SUFFIX = @LIB_SUFFIX@
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DLL_SUFFIX = @DLL_SUFFIX@
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BIN_SUFFIX = @BIN_SUFFIX@
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@ -790,3 +790,21 @@ EXPAND_MKSHLIB = $(EXPAND_LIBS_EXEC) --uselist -- $(MKSHLIB)
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ifdef STDCXX_COMPAT
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CHECK_STDCXX = objdump -p $(1) | grep -e 'GLIBCXX_3\.4\.\(9\|[1-9][0-9]\)' > /dev/null && echo "TEST-UNEXPECTED-FAIL | | We don't want these libstdc++ symbols to be used:" && objdump -T $(1) | grep -e 'GLIBCXX_3\.4\.\(9\|[1-9][0-9]\)' && exit 1 || exit 0
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endif
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# autoconf.mk sets OBJ_SUFFIX to an error to avoid use before including
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# this file
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OBJ_SUFFIX := $(_OBJ_SUFFIX)
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# PGO builds with GCC build objects with instrumentation in a first pass,
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# then objects optimized, without instrumentation, in a second pass. If
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# we overwrite the ojects from the first pass with those from the second,
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# we end up not getting instrumentation data for better optimization on
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# incremental builds. As a consequence, we use a different object suffix
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# for the first pass.
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ifndef NO_PROFILE_GUIDED_OPTIMIZE
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ifdef MOZ_PROFILE_GENERATE
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ifdef GNU_CC
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OBJ_SUFFIX := i_o
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endif
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endif
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endif
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@ -93,7 +93,7 @@ class ExpandArgsMore(ExpandArgs):
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subprocess.call(ar_extract + [os.path.abspath(arg)], cwd=tmp)
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objs = []
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for root, dirs, files in os.walk(tmp):
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objs += [relativize(os.path.join(root, f)) for f in files if os.path.splitext(f)[1] == conf.OBJ_SUFFIX]
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objs += [relativize(os.path.join(root, f)) for f in files if os.path.splitext(f)[1] in [conf.OBJ_SUFFIX, '.i_o']]
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newlist += objs
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else:
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newlist += [arg]
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@ -46,7 +46,7 @@ from expandlibs import LibDescriptor
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def generate(args):
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desc = LibDescriptor()
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for arg in args:
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if os.path.splitext(arg)[1] == conf.OBJ_SUFFIX:
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if os.path.splitext(arg)[1] in [conf.OBJ_SUFFIX, '.i_o']:
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desc['OBJS'].append(os.path.abspath(arg))
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elif os.path.splitext(arg)[1] == conf.LIB_SUFFIX and \
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(os.path.exists(arg) or os.path.exists(arg + conf.LIBS_DESC_SUFFIX)):
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@ -421,7 +421,7 @@ endif
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ALL_TRASH = \
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$(GARBAGE) $(TARGETS) $(OBJS) $(PROGOBJS) LOGS TAGS a.out \
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$(filter-out $(ASFILES),$(OBJS:.$(OBJ_SUFFIX)=.s)) $(OBJS:.$(OBJ_SUFFIX)=.ii) \
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$(OBJS:.$(OBJ_SUFFIX)=.i) \
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$(OBJS:.$(OBJ_SUFFIX)=.i) $(OBJS:.$(OBJ_SUFFIX)=.i_o) \
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$(HOST_PROGOBJS) $(HOST_OBJS) $(IMPORT_LIBRARY) $(DEF_FILE)\
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$(EXE_DEF_FILE) so_locations _gen _stubs $(wildcard *.res) $(wildcard *.RES) \
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$(wildcard *.pdb) $(CODFILE) $(MAPFILE) $(IMPORT_LIBRARY) \
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@ -948,6 +948,15 @@ ifdef GNU_CC
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endif
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endif
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endif
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ifneq (,$(MOZ_PROFILE_GENERATE)$(MOZ_PROFILE_USE))
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ifdef GNU_CC
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# Force rebuilding libraries and programs in both passes because each
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# pass uses different object files.
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$(PROGRAM) $(SHARED_LIBRARY) $(LIBRARY): FORCE
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endif
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endif
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endif # NO_PROFILE_GUIDED_OPTIMIZE
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##############################################
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