On 8/6/06, Paolo Bonzini <[EMAIL PROTECTED]> wrote:
> Is there a way to enable such exotic codegen for 32bit environments?
With libgcc-math you didn't have exotic instructions, but you had
trascendental operations compiled with -mfpmath=sse and with a special
ABI. -mfpmath=sse won about 8% over
Is there a way to enable such exotic codegen for 32bit environments?
With libgcc-math you didn't have exotic instructions, but you had
trascendental operations compiled with -mfpmath=sse and with a special
ABI. -mfpmath=sse won about 8% over -mfpmath=387 for tramp3d, which
does have trasce
Basically i'd like to have the cake and also eat it.
With g++-4.2-20060805/cygwin on a k8 box on some software path with
lots of sp float ops but no transcendentals or library calls
-mfpmath=sse,387: 5.2 Mray/s
-mfpmath=sse: 6 Mray/s
That 15% performance difference is no surprise when you see thi
