[Bug target/31850] gcc.c-torture/compile/limits-fnargs.c is slow at compiling for spu-elf

[abel at gcc dot gnu dot org]

------- Comment #14 from abel at gcc dot gnu dot org  2008-11-27 12:50 -------
(In reply to comment #13)
> (In reply to comment #12)
> Thanks, Andrey.
> I think there are 2 "issues" here:
> 1. register-renaming. (more related to this PR, I think)
> 2. schuedule-insns.
> Both of them slows compilation.
> With ARG4, on SPU, I see:
> -O1: 9m28.355s
> -O1 -fno-rename-registers:    0m19.196s
> -O2: 184m37.492s (not >1000 as I wrote, but >100)
> -O2 -fno-rename-registers: 31m29.482s
> -O2 -fno-schedule-insns:  10m26.851s
> -O2 -fno-rename-registers -fno-schedule-insns: 0m39.425s

Do you see this on ppc to spu cross?  How was your compiler configured?  I will
try again with the full test case when you'll tell me your configure options.

(For my reduced test case, all scheduling was around 10% without register
renaming, as you can see from cc1 output, which is why I didn't look further
into this.)   


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31850