Commit 90aca35a authored by Steve Thomas's avatar Steve Thomas Committed by Thomas Petazzoni
Browse files

gcc: add a BR2_GCC_ENABLE_GRAPHITE option 



The gcc graphite optimisations such as loop-interchange, blocking
and loop-flattening, also known as graphite are an optional feature of
gcc that is very well supported since about gcc version 4.5.

This patch adds support for graphite for the toolchain as an optional
flag for versions 4.8 onwards as an optional flag, that is disabled by
default.

Signed-off-by: default avatarSteve Thomas <scjthm@live.com>
Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
parent f1e1a078

package/gcc/Config.in.host

+13 −0
Original line number Diff line number Diff line
@@ -3,6 +3,9 @@ comment "GCC Options" 
config BR2_GCC_NEEDS_MPC

	bool



config BR2_GCC_SUPPORTS_GRAPHITE

	bool



choice

	prompt "GCC compiler Version"

	default BR2_GCC_VERSION_4_4_X if BR2_sparc_sparchfleon || BR2_sparc_sparchfleonv8 || BR2_sparc_sparcsfleon || BR2_sparc_sparcsfleonv8
@@ -60,6 +63,7 @@ choice 
	config BR2_GCC_VERSION_4_8_X

		depends on !BR2_microblaze && !BR2_arc && !BR2_avr32 && !BR2_bfin && !BR2_cortex_a12 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_powerpc64le

		select BR2_GCC_NEEDS_MPC

		select BR2_GCC_SUPPORTS_GRAPHITE

		bool "gcc 4.8.x"



	config BR2_GCC_VERSION_4_8_ARC
@@ -70,6 +74,7 @@ choice 
	config BR2_GCC_VERSION_4_9_X

		depends on !BR2_arc && !BR2_avr32 && !BR2_bfin && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8

		select BR2_GCC_NEEDS_MPC

		select BR2_GCC_SUPPORTS_GRAPHITE

		bool "gcc 4.9.x"



	config BR2_GCC_VERSION_SNAP
@@ -77,6 +82,7 @@ choice 
		select BR2_GCC_NEEDS_MPC

		# musl patches only for gcc 4.7+

		depends on !BR2_TOOLCHAIN_BUILDROOT_MUSL

		select BR2_GCC_SUPPORTS_GRAPHITE

		bool "gcc snapshot"

endchoice
@@ -180,3 +186,10 @@ config BR2_GCC_ENABLE_LIBMUDFLAP 
	  the help of the gcc -fmudflap option for more details.



	  If you're unsure, leave this option disabled.



config BR2_GCC_ENABLE_GRAPHITE

	bool "Enable graphite support"

	depends on BR2_GCC_SUPPORTS_GRAPHITE

	help

	  This option enables the graphite optimizations in the

	  compiler.

package/gcc/gcc.mk

+7 −0
Original line number Diff line number Diff line
@@ -154,6 +154,13 @@ HOST_GCC_COMMON_DEPENDENCIES += host-mpc 
HOST_GCC_COMMON_CONF_OPT += --with-mpc=$(HOST_DIR)/usr

endif



ifeq ($(BR2_GCC_ENABLE_GRAPHITE),y)

HOST_GCC_COMMON_DEPENDENCIES += host-isl host-cloog

HOST_GCC_COMMON_CONF_OPT += --with-isl=$(HOST_DIR)/usr --with-cloog=$(HOST_DIR)/usr

else

HOST_GCC_COMMON_CONF_OPT += --without-isl --without-cloog

endif



ifneq ($(BR2_arc)$(BR2_GCC_VERSION_SNAP),)

HOST_GCC_COMMON_DEPENDENCIES += host-flex host-bison

endif