I have a question about the math vector library routines in libmvec.
If I compile a program on x86 with -Ofast, something like:
void foo(double * __restrict x, double * __restrict y, double * __restrict z)
{
for (int i = 0; i < 1000; i++) x[i] = sin(y[i]);
}
I get a call to the vector sin routine _ZGVbN2v_sin. That is fine, but
is there some way to compile with -Ofast and not use the libmvec vector
routines? I have tried -fopenmp, -fopenmp-simd, -fno-openmp, and -fno-
openmp-simd and I always get a call to _ZGVbN2v_sin. Is there anyway
to stop the use of the vectorized calls (without turning off -Ofast)?
Steve Ellcey
[email protected]
