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Re: Stricter invalid_e500_subreg (with jump.c:true_regnum fix)

From: Ian Lance Taylor <iant at google dot com>
To: "Joseph S. Myers" <joseph at codesourcery dot com>
Cc: David Edelsohn <dje at watson dot ibm dot com>, gcc-patches at gcc dot gnu dot org
Date: 29 Nov 2006 07:11:32 -0800
Subject: Re: Stricter invalid_e500_subreg (with jump.c:true_regnum fix)
References: <Pine.LNX.4.64.0611290021510.14086@digraph.polyomino.org.uk> <200611290359.kAT3xsV39228@makai.watson.ibm.com> <Pine.LNX.4.64.0611291232220.12037@digraph.polyomino.org.uk> <Pine.LNX.4.64.0611291431230.13728@digraph.polyomino.org.uk>

"Joseph S. Myers" <joseph@codesourcery.com> writes:

> Specifically, how about this revised patch version?
> 
> 2006-11-29  Joseph Myers  <joseph@codesourcery.com>
> 
> 	* config/rs6000/predicates.md (gpc_reg_operand): Check
> 	invalid_e500_subreg.
> 	* config/rs6000/rs6000.c (invalid_e500_subreg): Don't allow any
> 	SImode subregs of SPE vectors.
> 	* config/rs6000/rs6000.md (insv): Fail for invalid E500 subregs.
> 	* jump.c (true_regnum): Require subregs to satisfy
> 	subreg_offset_representable_p.

The patch to jump.c is OK when and if the rest of the patch is OK.

Thanks.

Ian

References:
- Stricter invalid_e500_subreg (with jump.c:true_regnum fix)
  - From: Joseph S. Myers
- Re: Stricter invalid_e500_subreg (with jump.c:true_regnum fix)
  - From: David Edelsohn
- Re: Stricter invalid_e500_subreg (with jump.c:true_regnum fix)
  - From: Joseph S. Myers
- Re: Stricter invalid_e500_subreg (with jump.c:true_regnum fix)
  - From: Joseph S. Myers

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