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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/101012] New: ice in vect_slp_analyze_node_operations
Date: Thu, 10 Jun 2021 09:29:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101012

            Bug ID: 101012
           Summary: ice in vect_slp_analyze_node_operations
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 50976
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50976&action=3Dedit
C source code

For the attached C code, compiled with today's gcc trunk and
compiler flag -O3, does this:

bug446
during GIMPLE pass: vect
tif_getimage.c: In function =E2=80=98putRGBseparate8bittile=E2=80=99:
tif_getimage.c:1618:13: internal compiler error: in
vect_slp_analyze_node_operations, at tree-vect-slp.c:4442
0x5fd6fd vect_slp_analyze_node_operations
        ../../trunk.git/gcc/tree-vect-slp.c:4442
0xd902b3 vect_slp_analyze_node_operations
        ../../trunk.git/gcc/tree-vect-slp.c:4385
0xd902b3 vect_slp_analyze_node_operations
        ../../trunk.git/gcc/tree-vect-slp.c:4385
0xd902b3 vect_slp_analyze_node_operations
        ../../trunk.git/gcc/tree-vect-slp.c:4385

The bug first seems to occur sometime after git hash=20
91349e57bbfd0101, dated a couple of days ago, and git
hash f8b067056ba5dd53, dated today.

I will have my usual go at reducing the code. If someone
else wants to do the git bisect, then that's fine by me.=