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Add helper routines to help bypassing some compiler otpimization when benchmarking

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This commit is contained in:
Gael Guennebaud 2015-10-07 15:50:42 +02:00
parent f047ecc36a
commit c6eb17cbe9
1 changed files with 9 additions and 0 deletions
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9
bench/BenchTimer.h
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@ -28,6 +28,14 @@
# include <unistd.h> # include <unistd.h>
#endif #endif
static void escape(void *p) {
asm volatile("" : : "g"(p) : "memory");
}
static void clobber() {
asm volatile("" : : : "memory");
}
#include <Eigen/Core> #include <Eigen/Core>
namespace Eigen namespace Eigen
@ -168,6 +176,7 @@ public:
CODE; \ CODE; \
} \ } \
TIMER.stop(); \ TIMER.stop(); \
clobber(); \
} \ } \
} }