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Re: Haney's real matrix test regression

Richard Kenner wrote:

>     Yes.  I found a one-character typo in that change yesterday.  I'm working
> on
> some other fixes before checking that change in.  If I don't figure them
> out soon, I'll just test with that change.

Hi all again... bad news...

Timing Real matrix operations for n = 200
Language     Answer Check   Time    Iter Time
O-O C++        (2.41602e+06):   28.9    0.289
Hand-coded C   (2.41602e+06):   14.84    0.1484

Unfortunately, today, after

Wed Oct 24 12:41:19 2001  Richard Kenner  <>

 * emit-rtl.c (set_mem_attributes): Fix typo in last change.
 * print-rtl.c (print_rtx, case MEM): Improve display of MEM_DECL.

that horrible slow down for C++ is still there...


My i686 is in fact a PII: perhaps someone may run "Haney Speed" built with
today's 3.1 on an AMD core to exclude quickly the possibility of another nasty
partial register stall???

Paolo Carlini.

P.S. My build switches for the Haney code were "-O2 -funroll-loops
-fomit-frame-pointer -DNo_Fortran -D__KCC". My system is a PII-400, 256M,
Linux2.4.10, glibc2.2.4, binutils2.11.2.

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