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[Bug middle-end/28752] bootstrap comparision fails with "-ftree-vectorize -maltivec" on ppc
- From: "law at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Nov 2006 17:37:07 -0000
- Subject: [Bug middle-end/28752] bootstrap comparision fails with "-ftree-vectorize -maltivec" on ppc
- References: <bug-28752-12180@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #8 from law at redhat dot com 2006-11-06 17:37 -------
Subject: Re: bootstrap comparision fails with
"-ftree-vectorize -maltivec" on ppc
On Mon, 2006-11-06 at 09:39 +0000, irar at il dot ibm dot com wrote:
>
> ------- Comment #7 from irar at il dot ibm dot com 2006-11-06 09:38 -------
> Janis - thanks a lot for your help!
>
> > http://gcc.gnu.org/viewcvs?view=rev&rev=110705
> > r110705 | law | 2006-02-07 18:31:27 +0000 (Tue, 07 Feb 2006)
>
> In r110704 bootstrap passes with and w/o vectorization enabled, and in r110705
> boostrap fails in both cases (also without vectorization).
>
> The patch
>
> 2006-02-08 Jeff Law <law@redhat.com>
>
> PR tree-optimization/26169
> * tree-vrp.c (execute_vrp): Perform any queued SSA updates before
> threading jumps.
>
> (http://gcc.gnu.org/viewcvs?view=rev&revision=110758)
>
> fixes bootstrap without vectorization, but bootstrap with "BOOT_CFLAGS="-O2 -g
> -ftree-vectorize -maltivec" still fails.
Unfortunately I don't have a PPC64 I can use for bootstrap tests.
However, the failure you're seeing occurs when the stage1 compiler is
compiling crtbegin (or some other file), then send me the appropriate
.i file and I will be able to look at it with a cross compiler.
Jeff
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28752