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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tdep/29409] [gdb, tdep/aarch64] FAIL:
 gdb.opt/inline-small-func.exp: info breakpoints
Date: Tue, 26 Jul 2022 08:51:01 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29409

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aburgess at redhat dot com,
                   |                            |luis.machado at arm dot com

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
We have these different reliability tests:

i386 / amd64:
...
      if (post_prologue_pc
          && (cust !=3D NULL
              && cust->producer () !=3D NULL
              && (producer_is_llvm (cust->producer ())
              || producer_is_icc_ge_19 (cust->producer ()))))
        return std::max (start_pc, post_prologue_pc);
...

arm:
...
      if (post_prologue_pc
          && (cust =3D=3D NULL
              || cust->producer () =3D=3D NULL
              || startswith (cust->producer (), "GNU ")
              || producer_is_llvm (cust->producer ())))
        return post_prologue_pc;
...

I wonder if it's a good idea to do this in target-dependent code.  That is,=
 do
these guarantees by the compilers work only for specific targets?

Perhaps it's a better to move these tests to common code, and let targets
specify exceptions on it.

Note btw that with arm cust =3D=3D nullptr and cust->producer () =3D=3D nul=
lptr are
reasons to trust the skip_prologue_using_sal result, in contrast with i386 /
amd64.

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