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linpack with egcs-19981019
- To: egcs-bugs at cygnus dot com
- Subject: linpack with egcs-19981019
- From: Toshiyasu Morita <tm at netcom dot com>
- Date: Mon, 19 Oct 1998 15:37:49 -0700 (PDT)
snapshot: egcs-19981019
host: i386-linux
file: ftp://shell14.ba.best.com/pub.t/tm2/linpackc.c
options: -O2 -S -DROLL -DSP -DUNIX
Looks like egcs-19981019 is doing worse than egcs-19981006; it does
a read-modify-write cycle to a memory location in the second loop
of daxpy():
.L233:
fld %st(0)
movl -4(%ebp),%eax
movl 16(%ebp),%edi
fmuls (%edi,%eax,4)
fadds (%esi,%eax,4)
incl -4(%ebp) <- ouch
fstps (%esi,%eax,4)
cmpl %ebx,-4(%ebp)
jl .L233
Toshi