This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH] benchtests: Build ffs and ffsl benchtests with -fno-builtin
- From: Siddhesh Poyarekar <siddhesh dot poyarekar at gmail dot com>
- To: Will Newton <will dot newton at linaro dot org>
- Cc: GNU C Library <libc-alpha at sourceware dot org>
- Date: Tue, 1 Apr 2014 15:56:01 +0530
- Subject: Re: [PATCH] benchtests: Build ffs and ffsl benchtests with -fno-builtin
- Authentication-results: sourceware.org; auth=none
- References: <1396347841-32675-1-git-send-email-will dot newton at linaro dot org>
On 1 April 2014 15:54, Will Newton <will.newton@linaro.org> wrote:
> Without this flag it is possible that the compiler will optimize
> away the calls to ffs/ffsll.
Looks good to me.
Siddhesh
>
> ChangeLog:
>
> 2014-03-31 Will Newton <will.newton@linaro.org>
>
> * benchtests/Makefile (CFLAGS-bench-ffs.c): Add
> -fno-builtin. (CFLAGS-bench-ffsll.c): Likewise.
> ---
> benchtests/Makefile | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/benchtests/Makefile b/benchtests/Makefile
> index 5aa2eb1..525ab09 100644
> --- a/benchtests/Makefile
> +++ b/benchtests/Makefile
> @@ -37,6 +37,9 @@ stdlib-bench := strtod
>
> benchset := $(string-bench-all) $(stdlib-bench)
>
> +CFLAGS-bench-ffs.c += -fno-builtin
> +CFLAGS-bench-ffsll.c += -fno-builtin
> +
> LDLIBS-bench-acos = -lm
> LDLIBS-bench-acosh = -lm
> LDLIBS-bench-asin = -lm
> --
> 1.8.1.4
>
--
http://siddhesh.in