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Re: G++ could optimize ASM code more
On Wed, 9 May 2012, Daniel Marschall wrote:
1. I do not know my DisplayName/DisplayFamily (0f_2h or 0f_3h?).
Ask your processor (cpuid). Or your kernel (/proc/cpuinfo on linux).
3. Should I compare Latency or Throughput if I want to produce fast code? Or
doesn't it matter which value I compare?
Both. And you also need to look at the code that is nearby, not just this
one instruction. In short, don't bother. If you really want to know,
benchmark both versions.