Il 04/12/2012 23:30, H.J. Lu ha scritto:
> On Tue, Nov 27, 2012 at 8:00 AM, Paolo Bonzini wrote:
>> Hi,
>>
>> this bug triggers in the compilation of QEMU with GCC 4.7.2. It is
>> latent on trunk because reg_known_value is completely broken. I'll
>> send a separate patch, but this one applies th
On Tue, Nov 27, 2012 at 8:00 AM, Paolo Bonzini wrote:
> Hi,
>
> this bug triggers in the compilation of QEMU with GCC 4.7.2. It is
> latent on trunk because reg_known_value is completely broken. I'll
> send a separate patch, but this one applies there too.
>
> The problem arises when you have -f
> Bootstrap finished on x86_64-pc-linux-gnu, regtest in progress; ok for
> 4.7 and trunk if it passes?
>
> Paolo
>
> 2012-11-26 Paolo Bonzini
>
> PR rtl-optimization/55489
> * gcse.c (compute_transp): Precompute a canonical version
> of XEXP (x, 0), and pass it to canon_true
Il 27/11/2012 17:40, Steven Bosscher ha scritto:
> > Note that the bug is present on older branches too, but it became much
> > worse sometime between 4.4 and 4.7.
>
> Probably around the time we (i.e. you and me) taught gcse.c to handle
> REG_EQUAL expressions?
Hmm, no, that was much earlier. L
On Tue, Nov 27, 2012 at 5:00 PM, Paolo Bonzini wrote:
> Note that the bug is present on older branches too, but it became much
> worse sometime between 4.4 and 4.7.
Probably around the time we (i.e. you and me) taught gcse.c to handle
REG_EQUAL expressions?
> 2012-11-26 Paolo Bonzini <>
>
>
Hi,
this bug triggers in the compilation of QEMU with GCC 4.7.2. It is
latent on trunk because reg_known_value is completely broken. I'll
send a separate patch, but this one applies there too.
The problem arises when you have -fPIE (or -fPIC) and a huge function
with a lot of references to glob
