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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

On Wed, Feb 25, 2015 at 5:10 AM, Kai Tietz <> wrote:
> Hello,
> So, I did full regression-test for following patch:
> ChangeLog
> 2015-02-25  Richard Biener  <>
>     Kai Tietz  <>
>     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: In
function âfâ:
internal compiler error: Segmentation fault
 f (void)
0xd1f836 crash_signal
0xfaf59a gimple_code
0xfbd855 vectorizable_reduction(gimple_statement_base*,
gimple_stmt_iterator*, gimple_statement_base**, _slp_tree*)
0xfabc86 vect_analyze_stmt(gimple_statement_base*, bool*, _slp_tree*)
0xfb50c9 vect_analyze_loop_operations
0xfb58cc vect_analyze_loop_2
0xfb5c70 vect_analyze_loop(loop*)
0xfd558f vectorize_loops()
0xed3699 execute
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <> for instructions.
[hjl@gnu-6 gcc]$


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