[Bug middle-end/67766] [6 Regression]: Bootstrap failure on alpha-linux-gnu: ICE in simplify_subreg, at simplify-rtx.c

["ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67766

--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Alexandre Oliva from comment #1)
> Mine.  Moving down the code in function.c that's under the comment:
>          /* If a named return value dumped decl_return to memory, then
>             we may need to re-do the PROMOTE_MODE signed/unsigned
>             extension.  */
> so that the test:
>          else if (GET_MODE (real_decl_rtl) != GET_MODE (decl_rtl))
> appears after the blocks that deal with PARALLELs and CONCATs fixes it for
> me, without any regressions on x86* regstraps.
> 
> Could you please confirm it fixes bootstrap on alpha?  TIA,

Yes, the patch, based on the above instructions, passes the bootstrap. I'm
currently in the regression tests, but I don't expect any surprises there.
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Subject: [Bug middle-end/67766] [6 Regression]: Bootstrap failure on alpha-linux-gnu: ICE in simplify_subreg, at simplify-rtx.c
Date: Wed, 07 Oct 2015 12:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67766

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 36456
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36456&action=edit
Patch that fixes bootstrap problem
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From: "hjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/67385] READELF_FOR_TARGET isn't used in gcc configure
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idg385

--- Comment #1 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Wed Oct  7 13:45:21 2015
New Revision: 228567

URL: https://gcc.gnu.org/viewcvs?rev"8567&root=gcc&view=rev
Log:
Check $READELF_FOR_TARGET for readelf in configure

Similar to as, ld, nm and objdump, gcc configure should check
$READELF_FOR_TARGET for readelf.

        PR bootstrap/67385
        * configure.ac (gcc_cv_readelf): Check $READELF_FOR_TARGET.
        * configure: Regenerated.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/configure
    trunk/gcc/configure.ac