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From: "bouanto at zoho dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug jit/100242] New: libgccjit.so: error: in expmed_mode_index, at
 expmed.h:249
Date: Sat, 24 Apr 2021 00:33:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100242

            Bug ID: 100242
           Summary: libgccjit.so: error: in expmed_mode_index, at
                    expmed.h:249
           Product: gcc
           Version: 10.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: jit
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: bouanto at zoho dot com
  Target Milestone: ---

Created attachment 50664
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50664&action=3Dedit
First part of the compressed reproducer

Hi.
I get the following error for the attached reproducer:

during RTL pass: expand
libgccjit.so: error: in expmed_mode_index, at expmed.h:249
0x7f0da2e61a35 expmed_mode_index
        ../../../gcc/gcc/expmed.h:249
0x7f0da2e61aa4 expmed_op_cost_ptr
        ../../../gcc/gcc/expmed.h:271
0x7f0da2e620dc sdiv_cost_ptr
        ../../../gcc/gcc/expmed.h:540
0x7f0da2e62129 sdiv_cost
        ../../../gcc/gcc/expmed.h:558
0x7f0da2e73c12 expand_divmod(int, tree_code, machine_mode, rtx_def*, rtx_de=
f*,
rtx_def*, int)
        ../../../gcc/gcc/expmed.c:4335
0x7f0da2ea1423 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
        ../../../gcc/gcc/expr.c:9240
0x7f0da2cd1a1e expand_gimple_stmt_1
        ../../../gcc/gcc/cfgexpand.c:3796
0x7f0da2cd1c30 expand_gimple_stmt
        ../../../gcc/gcc/cfgexpand.c:3857
0x7f0da2cd90a9 expand_gimple_basic_block
        ../../../gcc/gcc/cfgexpand.c:5898
0x7f0da2cdade8 execute
        ../../../gcc/gcc/cfgexpand.c:6582

The reproducer was so big that I needed to compress it and split it in 3 fi=
les,
so you'll have to cat the 3 files together and uncompress it.

(If you could also explain to me how to find out where exactly is the issue=
 in
the reproducer in order to make it smaller and easier to debug, I'd
appreciate.)

Thanks to fix this issue.=