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

[Will Newton]

Without this flag it is possible that the compiler will optimize
away the calls to ffs/ffsll.

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