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authorJoseph Myers <joseph@codesourcery.com>2016-10-21 21:18:03 +0000
committerJoseph Myers <joseph@codesourcery.com>2016-10-21 21:18:03 +0000
commit7a8330c01bea0cb98654ca25e3ca5db7d48694b3 (patch)
tree1f5faab0b7c137b096e7b83bd1afa842a3938039 /benchtests
parent84d74e427a771906830800e574a72f8d25a954b8 (diff)
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Use -fno-builtin for sqrt benchmark.
This patch makes the sqrt benchmark use -fno-builtin, as already done
for benchmarks of ffs and ffsll, so that it actually benchmarks the
glibc function as (presumably) intended even in the presence of the
compiler inlining sqrt.

Tested for x86_64 and also used for benchmarking my ARM sqrt patch.

	* benchtests/Makefile (CFLAGS-bench-sqrt.c): New variable.
Diffstat (limited to 'benchtests')
-rw-r--r--benchtests/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/benchtests/Makefile b/benchtests/Makefile
index 144b32ea38..5a61522689 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -72,6 +72,7 @@ benchset := $(string-benchset-all) $(stdlib-benchset) $(stdio-common-benchset) \
 
 CFLAGS-bench-ffs.c += -fno-builtin
 CFLAGS-bench-ffsll.c += -fno-builtin
+CFLAGS-bench-sqrt.c += -fno-builtin
 
 bench-malloc := malloc-thread