[Bug rtl-optimization/59317] [4.9 Regression] [LRA,MIPS] ICE: in check_rtl, at lra.c (insn does not satisfy constraints)

["vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59317

Vladimir Makarov <vmakarov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |vmakarov at gcc dot gnu.org

--- Comment #1 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Robert Suchanek from comment #0)

> 
> The LRA generates the following piece of RTL that fails at check_rtl():
>  
> (insn 265 54 267 2 (set (reg:SI 8 $8 [339])
>         (const:SI (unspec:SI [
>                     (const_int 0 [0])
>                 ] UNSPEC_GP))) ia64-1_testcase.c:49 295 {*movsi_mips16}
>      (nil))
>  
> This does not satisfy the operand’s constrains in mov<mode>_mips16 pattern. 
> 
> The ICE appears to be triggered because of ALL_REGS assigned to new pseudos
> generated and the pseudo data gets expanded but I do not know how to fix it
> without breaking PR59133 again.

I believe it has been solved by one of the latest patches.  The pseudos with
ALL_REGS are really generated but their class is changed lately.

It would be nice, Robert, if you check this and close the PR.
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Subject: [Bug target/59371] [4.8/4.9 Regression] Performance regression in GCC 4.8 and later versions.
Date: Tue, 03 Dec 2013 23:09:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idY371

Maciej W. Rozycki <macro@linux-mips.org> changed:

           What    |Removed                     |Added
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                 CC|                            |macro@linux-mips.org

--- Comment #3 from Maciej W. Rozycki <macro@linux-mips.org> ---
Caused by:

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r193882 | rguenth | 2012-11-28 09:27:10 +0000 (Wed, 28 Nov 2012) | 19 lines

2012-11-28  Richard Biener  <rguenther@suse.de>

    PR c/35634
    * gimple.h (gimplify_self_mod_expr): Declare.
    * gimplify.c (gimplify_self_mod_expr): Export.  Take a different
    type for performing the arithmetic in.
    (gimplify_expr): Adjust.
    * tree-vect-loop-manip.c (vect_can_advance_ivs_p): Strip
    sign conversions we can re-apply after adjusting the IV.

    c-family/
    * c-gimplify.c (c_gimplify_expr): Gimplify self-modify expressions
    here and use a type with proper overflow behavior for types that would
    need to be promoted for the arithmetic.

    * gcc.dg/torture/pr35634.c: New testcase.
    * g++.dg/torture/pr35634.C: Likewise.
    * gcc.dg/vect/pr18536.c: Mark worker function noinline.

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