https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90009

--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Wed Jun 12 14:56:18 2019
New Revision: 272189

URL: https://gcc.gnu.org/viewcvs?rev=272189&root=gcc&view=rev
Log:
[nvptx] Assert fork has at most one join in nvptx_find_par

With the test-case of PR90009 we run into a SIGSEGV in nvptx_neuter_pars,
because par->join_insn and par->join_block are NULL.

Detect this problem earlier, by adding an assert in nvptx_find_par that
asserts that a fork cannot be paired with more than one join.

Build and tested on x86_64 with nvptx accelerator enabled.

2019-06-12  Tom de Vries  <tdevr...@suse.de>

        PR tree-optimization/90009
        * config/nvptx/nvptx.c (nvptx_find_par): Assert fork has at most join.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/nvptx/nvptx.c

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