On Fri, Jan 30, 2015 at 1:57 AM, Alan Modra wrote:
> On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
>> https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-December/123776.html
>> shows gcc-5 miscompiling a powerpc64 linux kernel. The executive
>> summary is that the rs6000 backend h
On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
> https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-December/123776.html
> shows gcc-5 miscompiling a powerpc64 linux kernel. The executive
> summary is that the rs6000 backend has a bug in its RTL description of
> indirect calls. We
On Thu, Jan 29, 2015 at 01:27:24PM -0600, Segher Boessenkool wrote:
> On Fri, Jan 30, 2015 at 01:05:54AM +1030, Alan Modra wrote:
> > Segher, does this one look better to you? The previous patch turned
> > off constant propagation for fixed registers as well as register copy
> > propagation. The
On Fri, Jan 30, 2015 at 01:05:54AM +1030, Alan Modra wrote:
> Segher, does this one look better to you? The previous patch turned
> off constant propagation for fixed registers as well as register copy
> propagation. The latter is all I really meant to do.
I'm still not happy about not constant
On Sat, Jan 17, 2015 at 01:12:49PM +0100, Richard Biener wrote:
> On January 17, 2015 1:37:12 AM CET, Alan Modra wrote:
> >On Fri, Jan 16, 2015 at 11:03:24AM -0600, Segher Boessenkool wrote:
> >> On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
> >> > OK, so we need to fix this in the r
On January 17, 2015 1:37:12 AM CET, Alan Modra wrote:
>On Fri, Jan 16, 2015 at 11:03:24AM -0600, Segher Boessenkool wrote:
>> On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
>> > OK, so we need to fix this in the rs6000 backend, but it occurs to
>me
>> > that cprop also has a bug here.
On Sat, Jan 17, 2015 at 11:16:57AM +1030, Alan Modra wrote:
> On Fri, Jan 16, 2015 at 09:35:16AM -0700, Jeff Law wrote:
> > On 01/16/15 02:42, Alan Modra wrote:
> > > * cprop.c (do_local_cprop): Disallow replacement of fixed
> > > hard registers.
> > OK. Extra credit for a testcase, ppc specif
On Fri, Jan 16, 2015 at 08:09:51PM -0600, Segher Boessenkool wrote:
> On Sat, Jan 17, 2015 at 11:07:12AM +1030, Alan Modra wrote:
> > On Fri, Jan 16, 2015 at 11:03:24AM -0600, Segher Boessenkool wrote:
> > > On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
> > > > OK, so we need to fix t
On Sat, Jan 17, 2015 at 11:07:12AM +1030, Alan Modra wrote:
> On Fri, Jan 16, 2015 at 11:03:24AM -0600, Segher Boessenkool wrote:
> > On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
> > > OK, so we need to fix this in the rs6000 backend, but it occurs to me
> > > that cprop also has a b
On Fri, Jan 16, 2015 at 09:35:16AM -0700, Jeff Law wrote:
> On 01/16/15 02:42, Alan Modra wrote:
> > * cprop.c (do_local_cprop): Disallow replacement of fixed
> > hard registers.
> OK. Extra credit for a testcase, ppc specific is obviously OK.
Thanks. Committed revision 219786. I'll see
On Fri, Jan 16, 2015 at 11:03:24AM -0600, Segher Boessenkool wrote:
> On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
> > OK, so we need to fix this in the rs6000 backend, but it occurs to me
> > that cprop also has a bug here. It shouldn't be touching fixed hard
> > registers.
>
> Wh
On Fri, Jan 16, 2015 at 08:12:27PM +1030, Alan Modra wrote:
> https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-December/123776.html
> shows gcc-5 miscompiling a powerpc64 linux kernel. The executive
> summary is that the rs6000 backend has a bug in its RTL description of
> indirect calls. We
On 01/16/15 02:42, Alan Modra wrote:
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-December/123776.html
shows gcc-5 miscompiling a powerpc64 linux kernel. The executive
summary is that the rs6000 backend has a bug in its RTL description of
indirect calls. We specify a parallel containing
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-December/123776.html
shows gcc-5 miscompiling a powerpc64 linux kernel. The executive
summary is that the rs6000 backend has a bug in its RTL description of
indirect calls. We specify a parallel containing both the actual call
and an action tha
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