Mail Archives: djgpp/1993/07/07/15:09:40
Yow!
rcharif AT math DOT utexas DOT edu writes:
> GCC will never be as fast as native compilers for a given
> architecture. It is built to be architecture dependant as it can be.
> IT starts by generating an intermediate code of the programs (RTL),
> then translates it to assembly language for the target architecture.
> This problem affects the i386 architecture more than others due to the
> limited number of available registers. The RTL code is organized in a
> way that allows the code generator to fit most variables in registers,
> and when it runs out of registers, use the memory.
Just out of curiosity, does anybody know what the -m486 switch
does? I have never found it to speed up anything, but I have found it
can slow things down. (Yes, I have a 486.)
George R. Welch
grw AT tamu DOT edu
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