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Subject[PATCH] x86/kbuild: Use cc-option to enable -falign-{jumps/loops}
Date
clang currently does not support these optimizations, only enable them
when they are available.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---
arch/x86/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index a94a4d10f2df..73604e18447a 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -88,10 +88,10 @@ else
KBUILD_CFLAGS += -m64

# Align jump targets to 1 byte, not the default 16 bytes:
- KBUILD_CFLAGS += -falign-jumps=1
+ KBUILD_CFLAGS += $(call cc-option,-falign-jumps=1)

# Pack loops tightly as well:
- KBUILD_CFLAGS += -falign-loops=1
+ KBUILD_CFLAGS += $(call cc-option,-falign-loops=1)

# Don't autogenerate traditional x87 instructions
KBUILD_CFLAGS += $(call cc-option,-mno-80387)
--
2.12.2.715.g7642488e1d-goog
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