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Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?

From: Mark Kettenis <mark dot kettenis at xs4all dot nl>
To: ebotcazou at adacore dot com
Cc: brobecker at adacore dot com, jimb at codesourcery dot com, gdb-patches at sourceware dot org
Date: Thu, 10 Jan 2008 11:58:07 +0100 (CET)
Subject: Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?
References: <20080109151745.GA13181@adacore.com> <20080109191535.GB19569@caradoc.them.org> <20080109194602.GF21281@adacore.com> <200801092140.43362.ebotcazou@adacore.com>

> From: Eric Botcazou <ebotcazou@adacore.com>
> Date: Wed, 9 Jan 2008 21:40:43 +0100
> 
> > Eric? Can you remind us of what the problems were? I think it was
> > a combination of both...
> 
> Correct.  Bloat + holes in location lists so variables couldn't always be 
> displayed in the debugger, what we deemed unacceptable at -O0.  We have a
> local patch instead to manually emit location notes in a specific case.

If generating the right location information for -O0 is too difficult,
perhaps the compiler should make life easier for itself and disable
scheduling instructions into the prologue?

Follow-Ups:
- Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?
  - From: Eric Botcazou
- Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?
  - From: Daniel Jacobowitz

References:
- [RFC/RFA?] Should break FILE:LINENO skip prologue?
  - From: Joel Brobecker
- Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?
  - From: Daniel Jacobowitz
- Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?
  - From: Joel Brobecker
- Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?
  - From: Eric Botcazou

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