[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Kai Tietz from comment #10)
> Fixed on trunk and 4.9

The fix 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 ‘f’:
/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
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-6 gcc]$

on trunk.