[Bug jit/96079] New: Unresolved atomic builtins

bouanto at zoho dot com gcc-bugzilla@gcc.gnu.org
Mon Jul 6 13:23:15 GMT 2020


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96079

            Bug ID: 96079
           Summary: Unresolved atomic builtins
           Product: gcc
           Version: 10.1.0
            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 48836
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48836&action=edit
Reproducer

Hi.
When I try to use an atomic builtin, it gives an error like:

libgccjit.so: error: /tmp/libgccjit-1VoggR/fake.so: undefined symbol:
__atomic_store_n

I tried setting the arch with:

gcc_jit_context_add_command_line_option(ctxt, "-march=x86-64");


but it didn't change anything.

>From inspecting the source code of gcc, it seems it does not support that yet
because it does not call resolve_overloaded_builtin (I might be wrong, I don't
have much knowledge of the gcc codebase).

So, is there a way to do that currently or is it a bug?

Thanks.


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