build: use -O2 instead of -Os for ARC with SDK 0.9
This is intended as a temporary fix for ZEP-1882. Investigation for this bug has shown that the current SDK 0.9 compiler for ARC generates incorrect code under -Os optimization level. Kuo-Lang Tseng found out that SDK 0.8.2 does not have this issue, and that lowering optimization level to -O2 fixes the issue with SDK 0.9. Juro Bystricky is working on an updated SDK with ARC GCC 6.3.0, but there are still problems with it, so he also suggested to use -O2 in the meantime. Instead of blindly setting -O2 for all toolchains and architectures, let Makefile.toolchain.zephyr make the decision for ARC and 0.9 only. Tested with hello_world, CONFIG_ADC=y and BOARD=arduino_101_sss. Jira: ZEP-1882 Change-Id: Ifde2e3950c9d93eed8982149805acfda9d13a94f Signed-off-by: Patrice Buriez <patrice.buriez@intel.com>
This commit is contained in:
parent
fd8c59b996
commit
49a8de7ae3
2 changed files with 15 additions and 2 deletions
7
Makefile
7
Makefile
|
@ -599,9 +599,9 @@ ARCH = $(subst $(DQUOTE),,$(CONFIG_ARCH))
|
|||
export ARCH
|
||||
|
||||
ifeq ($(CONFIG_DEBUG),y)
|
||||
KBUILD_CFLAGS += -Og
|
||||
KBUILD_CFLAGS_OPTIMIZE := -Og
|
||||
else
|
||||
KBUILD_CFLAGS += -Os
|
||||
KBUILD_CFLAGS_OPTIMIZE := -Os
|
||||
endif
|
||||
|
||||
ifdef ZEPHYR_GCC_VARIANT
|
||||
|
@ -613,6 +613,9 @@ $(if $(CROSS_COMPILE),, \
|
|||
endif
|
||||
endif
|
||||
|
||||
# Let Makefile.toolchain adjust optimization level
|
||||
KBUILD_CFLAGS += $(KBUILD_CFLAGS_OPTIMIZE)
|
||||
|
||||
-include $(srctree)/ext/Makefile
|
||||
-include $(srctree)/lib/Makefile
|
||||
|
||||
|
|
|
@ -36,6 +36,16 @@ ifeq ($(SDK_VERSION),0.8.2)
|
|||
TOOLCHAIN_ARCH := i686
|
||||
endif
|
||||
|
||||
# TODO remove once we have a replacement for 0.9 that fixes ZEP-1882
|
||||
# See https://jira.zephyrproject.org/browse/ZEP-1882
|
||||
ifeq ($(SDK_VERSION),0.9)
|
||||
ifeq ($(ARCH),arc)
|
||||
ifneq ($(CONFIG_DEBUG),y)
|
||||
KBUILD_CFLAGS_OPTIMIZE := -O2
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
|
||||
ifeq ($(HOST_OS),MINGW)
|
||||
TOOLCHAIN_HOME = ${ZEPHYR_SDK_INSTALL_DIR}/sysroots/i686-pokysdk-mingw32
|
||||
else
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue