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Re: Compiler Optimizations [was Package options dialog]
On 05/08/18 07:06, Joerg Sonnenberger wrote:
On Mon, May 07, 2018 at 08:33:54PM -0500, Jason Bacon wrote:
By adding -mfpmath=sse -msse3. The cpuflags command has so far given me the
same output on every machine I've tried. I've run a few benchmarks using
so far have not seen any measurable difference between -march=native and
-mfpmath=sse -msse3 -march=native.
It can make a difference on i386, but not necessarily a positive one. It
is useless on x86_64.
That would make sense. Most i386 compilers have SSE off by default in
my experience. I've had to force it on in a few cases to get code with
embedded SSE instructions to build.
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