Merge "FDO: support linux-x86 target" (2863fa7a) · Commits · e / os / android_build

core/combo/TARGET_linux-x86.mk

+33 −0

Original line number	Diff line number	Diff line
		@@ -63,6 +63,8 @@ endif
		ifneq ($(wildcard $(TARGET_CC)),)
		TARGET_LIBGCC := \
		$(shell $(TARGET_CC) -m32 -print-file-name=libgcc.a)
		target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
		-print-file-name=libgcov.a)
		endif

		TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
		@@ -72,6 +74,34 @@ libm_root := bionic/libm
		libstdc++_root := bionic/libstdc++
		libthread_db_root := bionic/libthread_db

		# Define FDO (Feedback Directed Optimization) options.

		TARGET_FDO_CFLAGS:=
		TARGET_FDO_LIB:=

		ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
		# Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
		# The profile will be generated on /data/local/tmp/profile on the device.
		TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO
		TARGET_FDO_LIB := $(target_libgcov)
		else
		# If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations.
		# Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
		ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),)
		TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT)
		else
		ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
		$(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.)
		endif
		endif

		# If the FDO profile directory can't be found, then FDO is off.
		ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
		TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO
		TARGET_FDO_LIB := $(target_libgcov)
		endif
		endif

		# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
		# symlinks located in out/ to point to the appropriate kernel
		# headers. see 'config/kernel_headers.make' for more details
		@@ -191,6 +221,7 @@ $(hide) $(PRIVATE_CXX) \
		$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
		$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
		$(PRIVATE_TARGET_LIBGCC) \
		$(PRIVATE_TARGET_FDO_LIB) \
		$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
		-o $@ \
		$(PRIVATE_LDFLAGS) \
		@@ -216,6 +247,7 @@ $(hide) $(PRIVATE_CXX) \
		$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
		$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
		$(PRIVATE_TARGET_LIBGCC) \
		$(PRIVATE_TARGET_FDO_LIB) \
		$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
		-o $@ \
		$(PRIVATE_LDFLAGS) \
		@@ -237,6 +269,7 @@ $(hide) $(PRIVATE_CXX) \
		-Wl,--no-whole-archive \
		-Wl,--start-group \
		$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
		$(PRIVATE_TARGET_FDO_LIB) \
		$(PRIVATE_TARGET_LIBGCC) \
		-Wl,--end-group \
		$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))