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Re: [patch]: [Bug tree-optimization/61917] [4.9/5 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Kai Tietz <ktietz70 at googlemail dot com>
- Cc: Richard Biener <richard dot guenther at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, Jakub Jelinek <jakub at redhat dot com>
- Date: Wed, 25 Feb 2015 08:51:02 -0800
- Subject: Re: [patch]: [Bug tree-optimization/61917] [4.9/5 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
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On Wed, Feb 25, 2015 at 5:10 AM, Kai Tietz <ktietz70@googlemail.com> wrote:
> Hello,
>
> So, I did full regression-test for following patch:
>
> ChangeLog
>
> 2015-02-25 Richard Biener <rguenther@suse.de>
> Kai Tietz <ktietz@redhat.com>
>
> PR tree-optimization/61917
> * tree-vect-loop.c (vectorizable_reduction): Allow
> vect_internal_def without reduction to exit graceful.
>
I think it caused:
FAIL: gcc.dg/pr56350.c (internal compiler error)
FAIL: gcc.dg/pr56350.c (test for excess errors)
[hjl@gnu-6 gcc]$ ./xgcc -B./ -O -ftree-vectorize
/export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr56350.c
/export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr56350.c: In
function âfâ:
/export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr56350.c:8:1:
internal compiler error: Segmentation fault
f (void)
^
0xd1f836 crash_signal
/export/gnu/import/git/sources/gcc/gcc/toplev.c:383
0xfaf59a gimple_code
/export/gnu/import/git/sources/gcc/gcc/gimple.h:1553
0xfbd855 vectorizable_reduction(gimple_statement_base*,
gimple_stmt_iterator*, gimple_statement_base**, _slp_tree*)
/export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:4987
0xfabc86 vect_analyze_stmt(gimple_statement_base*, bool*, _slp_tree*)
/export/gnu/import/git/sources/gcc/gcc/tree-vect-stmts.c:7170
0xfb50c9 vect_analyze_loop_operations
/export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:1539
0xfb58cc vect_analyze_loop_2
/export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:1800
0xfb5c70 vect_analyze_loop(loop*)
/export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:1898
0xfd558f vectorize_loops()
/export/gnu/import/git/sources/gcc/gcc/tree-vectorizer.c:451
0xed3699 execute
/export/gnu/import/git/sources/gcc/gcc/tree-ssa-loop.c:295
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[hjl@gnu-6 gcc]$
--
H.J.