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Re: [tree-ssa] Mainline merge plan (IA64 bootstrap)
- From: Steve Ellcey <sje at cup dot hp dot com>
- To: gcc at gcc dot gnu dot org, ahs3 at fc dot hp dot com, pinskia at physics dot uc dot edu,wilson at specifixinc dot com, schwab at suse dot de
- Date: Tue, 2 Mar 2004 08:29:20 -0800 (PST)
- Subject: Re: [tree-ssa] Mainline merge plan (IA64 bootstrap)
> I did an update and bootstrap today, and it did fail. I tracked it down
> to a problem in global.c. The list of registers to allocate had two of
> them swapped. This is presumably a problem with allocno_compare, which
> does some FP arithmetic. I see Steve Ellcey checked in a patch which
> enabled inline FP divides by default. If I disable that (by changing
> TARGET_DEFAULT), then the bootstrap succeeds.
Andreas Schwab found this over the weekend. I have one proposed fix for
it that I sent in
http://gcc.gnu.org/ml/gcc-patches/2004-03/msg00065.html that I think
works but my testing isn't conclusive because any little tweek to the
build/test process seems to affect whether or not the bug appears.
Steve Ellcey
sje@cup.hp.com