This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: Patch for scan_loop [Re: EGCS EXTREME optimization times...]
- To: Franz Sirl <Franz dot Sirl-kernel at lauterbach dot com>
- Subject: Re: Patch for scan_loop [Re: EGCS EXTREME optimization times...]
- From: Jeffrey A Law <law at hurl dot cygnus dot com>
- Date: Sat, 13 Feb 1999 22:46:05 -0700
- cc: Michael Hayes <m dot hayes at elec dot canterbury dot ac dot nz>, egcs-patches at cygnus dot com, egcs-bugs at cygnus dot com
- Reply-To: law at cygnus dot com
In message <99021321575600.00950@ns1102.munich.netsurf.de>you write:
FAIL: gcc.c-torture/compile/980329-1.c, -O2 -fomit-frame-pointer
> -finline-functions -funroll-all-loops
>
> I'm a little bit worried about that, cause this thread implied that this
> patch should only improve compilation speed and not change the behaviour
> of the compiler.
>
> Thoughts?
Odd. Debug it.
ie, first verify that it actually changed the code and that we're not getting
some spurious testing problem.
Then we'll start looking at the loop dumps to see what changed.
This is a prime opportunity to learn a little about debugging testcases, then
debugging the compiler.
jeff