[Bug target/68256] [6 regression] switching constant pools to rodata sections causes go bootstrap failure.

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68256

--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Author: ramana
Date: Tue Nov 10 08:35:21 2015
New Revision: 230085

URL: https://gcc.gnu.org/viewcvs?rev=230085&root=gcc&view=rev
Log:
Workaround PR68256 on AArch64


> This is causing a bootstrap comparison failure in gcc/go/gogo.o.

I've had a look at this and the trigger is the
aarch64_use_constant_blocks_p change which appears to be causing a
bootstrap comparison failure because of differences to offsets when
built with debug and without debug. I don't think the problem is
specifically in the backend but this needs some careful
investigation. For now, in the interest of go bootstraps continuing on
trunk - I'm proposing a patch that partially rolls back the change in
aarch64_use_constant_blocks_p and am still looking into the issue but
it will take me some more time to get to the bottom of the issue.

Bootstrapped on aarch64-none-linux-gnu including (c,c++ and go) -
testing finished ok.

2015-11-10  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        PR bootstrap/68256
        * config/aarch64/aarch64.c (aarch64_use_constant_blocks_p):
        Return false.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64.c