GDC vs dmd speed

Walter Bright newshound2 at digitalmars.com
Mon Oct 14 14:22:36 PDT 2013


On 10/14/2013 12:24 PM, Spacen Jasset wrote:
> dmd32 v2.063.2
> with flags: ["-O", "-release", "-noboundscheck", "-inline"]
>
> gdc 4.6 (0.29.1-4.6.4-1ubuntu4) Which I assume might be v2.020?
> with flags: ["-O2"]

dmd uses the x87 for 32 bit code for floating point, while gdc uses the SIMD 
instructions, which are faster.

For 64 bit code, dmd uses SIMD instructions too.



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