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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-08-20 20:09:40 +0300
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-09-04 04:01:17 +0300
commit15f5db60a13748f44e5a14a2573c2cfcdc152f1c (patch)
tree7123e2a44a2aa4d377c2f65f0c5bd16a7283ffb8 /Makefile
parente2079e93f562c7f7a030eb7642017ee5eabaaa10 (diff)
downloadlinux-15f5db60a13748f44e5a14a2573c2cfcdc152f1c.tar.xz
kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC
arch/arc/Makefile overrides -O2 with -O3. This is the only user of ARCH_CFLAGS. There is no user of ARCH_CPPFLAGS or ARCH_AFLAGS. My plan is to remove ARCH_{CPP,A,C}FLAGS after refactoring the ARC Makefile. Currently, ARC has no way to enable -Wmaybe-uninitialized because both -O3 and -Os disable it. Enabling it will be useful for compile-testing. This commit allows allmodconfig (, which defaults to -O2) to enable it. Add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y to all the defconfig files in arch/arc/configs/ in order to keep the current config settings. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile10
1 files changed, 6 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index 97f5d1254708..c27bc98ad28b 100644
--- a/Makefile
+++ b/Makefile
@@ -723,10 +723,12 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
-ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
-KBUILD_CFLAGS += -Os
-else
-KBUILD_CFLAGS += -O2
+ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
+KBUILD_CFLAGS += -O2
+else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3
+KBUILD_CFLAGS += -O3
+else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+KBUILD_CFLAGS += -Os
endif
ifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED