[PATCH] benchtests: Build ffs and ffsl benchtests with -fno-builtin

Siddhesh Poyarekar siddhesh.poyarekar@gmail.com
Tue Apr 1 10:26:00 GMT 2014


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



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