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| author |   Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-08-21 02:09:40 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-09-04 10:01:17 +0900 |
| commit | 15f5db60a13748f44e5a14a2573c2cfcdc152f1c (patch) | |
| tree | 7123e2a44a2aa4d377c2f65f0c5bd16a7283ffb8 /Makefile | |
| parent | kbuild: Do not enable -Wimplicit-fallthrough for clang for now (diff) | |
| download | wireguard-linux-15f5db60a13748f44e5a14a2573c2cfcdc152f1c.tar.xz wireguard-linux-15f5db60a13748f44e5a14a2573c2cfcdc152f1c.zip | |
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-- | Makefile | 10 |
1 files changed, 6 insertions, 4 deletions
@@ -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 |