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Re: [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps?

From: Jeff Law <law at redhat dot com>
To: David Malcolm <dmalcolm at redhat dot com>, Richard Biener <richard dot guenther at gmail dot com>, Trevor Saunders <tbsaunde at tbsaunde dot org>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Prasad Ghangal <prasad dot ghangal at gmail dot com>
Date: Mon, 16 May 2016 12:48:25 -0600
Subject: Re: [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps?
Authentication-results: sourceware.org; auth=none
References: <CAFiYyc3p8K1wOocnoQxMNCp=ezg-ZdVtAH11is_LyLX8EWkO0w at mail dot gmail dot com> <1462914060-47433-1-git-send-email-dmalcolm at redhat dot com> <20160511013151 dot GC21068 at ball> <CAFiYyc1n=afiz=FRWipc3YFr1LE+FFdV-zLAdEWx5eT-rW3uoQ at mail dot gmail dot com> <1463063369 dot 11310 dot 46 dot camel at redhat dot com>

On 05/12/2016 08:29 AM, David Malcolm wrote:


One wart I ran into is that system.h has this:

/* Front ends should never have to include middle-end headers.  Enforce
   this by poisoning the header double-include protection defines.  */
#ifdef IN_GCC_FRONTEND
#pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
#endif

i.e. the idea of running RTL code from inside the C frontend seems to
be banned.

Yea, we really don't want the front-ends to know about the guts of RTL.This work would seem to violate that guiding principle.

I'd be more in favor of a true RTL front-end rather than bolting it ontothe side of the C front-end.


jeff

Follow-Ups:
- Re: [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps?
  - From: Richard Biener

References:
- Re: [PATCH 0/4] RFC: RTL frontend
  - From: Richard Biener
- [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps?
  - From: David Malcolm
- Re: [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps?
  - From: Trevor Saunders
- Re: [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps?
  - From: Richard Biener
- Re: [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps?
  - From: David Malcolm

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