diff options
| author | Andi Kleen <andi@firstfloor.org> | 2008-09-04 13:46:11 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-09-04 08:42:06 -0700 |
| commit | fb481dd56adf3c5b0993b8f052cc9ba966e3959d (patch) | |
| tree | 22312cb77dbc8bf71bc54dff40efad7cf8e2d822 /arch/x86/lib/Makefile | |
| parent | a5444d15b611cf2ffe2bc52aaf11f2ac51882f89 (diff) | |
x86: drop -funroll-loops for csum_partial_64.c
Impact: performance optimization
I did some rebenchmarking with modern compilers and dropping
-funroll-loops makes the function consistently go faster by a few
percent. So drop that flag.
Thanks to Richard Guenther for a hint.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/lib/Makefile')
| -rw-r--r-- | arch/x86/lib/Makefile | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index aa3fa411942..55e11aa6d66 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -17,9 +17,6 @@ ifeq ($(CONFIG_X86_32),y) lib-$(CONFIG_X86_USE_3DNOW) += mmx_32.o else obj-y += io_64.o iomap_copy_64.o - - CFLAGS_csum-partial_64.o := -funroll-loops - lib-y += csum-partial_64.o csum-copy_64.o csum-wrappers_64.o lib-y += thunk_64.o clear_page_64.o copy_page_64.o lib-y += memmove_64.o memset_64.o |