Richard Sandiford [mailto:rdsandif...@googlemail.com] wrote:
>
> > From http://gcc.gnu.org/ml/gcc-patches/2001-02/msg01480.html,
> > the patch defines HARD_REGNO_CALLER_SAVE_MODE to return
> proper mode for i386.
> > For MIPS, we may have:
> > Ex:
> > #define HARD_REGNO_CALLER_SAVE_MODE(REGNO,
"Fu, Chao-Ying" writes:
> From testing, I found out that the whole width of a MIPS
> integer/floating-point register
> is saved and restored around a call. This may hurt the performance.
>
> Ex:
> fu@debian6:/disk/fu/dev/test$ cat add2.c
> void test2(float);
>
> float test(float a, float b)
>
