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gcc: add a BR2_GCC_ENABLE_GRAPHITE option

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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: Steve Thomas <scjthm@live.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Steve Thomas 2014-05-19 19:48:13 +00:00 committed by Thomas Petazzoni
parent f1e1a078a7
commit 90aca35a4c
2 changed files with 20 additions and 0 deletions
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13
package/gcc/Config.in.host
View File

@ -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.

7
package/gcc/gcc.mk
View File

@ -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