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Re: C++ PATCH: Remove THUNK_DECLs

To: jason at cygnus dot com
Subject: Re: C++ PATCH: Remove THUNK_DECLs
From: Mark Mitchell <mark at codesourcery dot com>
Date: Wed, 03 May 2000 16:03:41 -0700
Cc: gcc-patches at gcc dot gnu dot org
Organization: CodeSourcery, LLC
References: <20000503153601X.mitchell@codesourcery.com><u9d7n31cwj.fsf@yorick.cygnus.com>

>>>>> "Jason" == Jason Merrill <jason@cygnus.com> writes:

    Jason> I don't think this is safe.  The reason for using a
    Jason> THUNK_DECL in the first place was because we wanted to
    Jason> store information in it that is wrong for a FUNCTION_DECL:

    Jason> DECL_INITIAL points to a FUNCTION_DECL, rather than a
    Jason> BLOCK.  THUNK_DELTA <=> DECL_FRAME_SIZE THUNK_VCALL_OFFSET
    Jason> <=> DECL_SAVED_INSNS

I've just looked a little more closely.  Now I'm a little more
nervous.

    Jason> The last sounds particularly dangerous.  I would not be
    Jason> opposed to moving this information into DECL_LANG_SPECIFIC,
    Jason> though.

That's probably a good suggestion.

--
Mark Mitchell                   mark@codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com

References:
- C++ PATCH: Remove THUNK_DECLs
  - From: Mark Mitchell
- Re: C++ PATCH: Remove THUNK_DECLs
  - From: Jason Merrill

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