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[2/4] kbuild: remove cc-option test of -fno-merge-all-constants

Message ID 20200910135120.3527468-2-masahiroy@kernel.org
State New
Headers show
Series [1/4] kbuild: remove cc-option test of -fno-strict-overflow | expand

Commit Message

Masahiro Yamada Sept. 10, 2020, 1:51 p.m. UTC
The minimal compiler versions, GCC 4.9 and Clang 10 support this flag.

Here is the godbolt:
https://godbolt.org/z/8T4177

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/Makefile b/Makefile
index 059b36f2ea53..1b6abecc5cab 100644
--- a/Makefile
+++ b/Makefile
@@ -927,7 +927,7 @@  KBUILD_CFLAGS	+= -fno-strict-overflow
 # clang sets -fmerge-all-constants by default as optimization, but this
 # is non-conforming behavior for C and in fact breaks the kernel, so we
 # need to disable it here generally.
-KBUILD_CFLAGS	+= $(call cc-option,-fno-merge-all-constants)
+KBUILD_CFLAGS	+= -fno-merge-all-constants
 
 # for gcc -fno-merge-all-constants disables everything, but it is fine
 # to have actual conforming behavior enabled.