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Re: 4.0 regression: missing debug info for global variables in Cwith -O2

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: Andrew Pinski <pinskia at physics dot uc dot edu>, gcc at gcc dot gnu dot org, mark at codesourcery dot com
Date: Tue, 31 May 2005 09:40:30 +0200
Subject: Re: 4.0 regression: missing debug info for global variables in Cwith -O2
References: <ef027772b4183ed23a9049e00e8c2229@physics.uc.edu> <200505302013.j4UKDJUn027341@53v30g15.boeblingen.de.ibm.com> <20050530203359.GI7663@sunsite.mff.cuni.cz>

> Yes; in fact 'main' is even superfluous.  Just compile
>
>  int var;
>
> with -S -O2 -g on gcc 3.4 and 4.0 and look at the resulting
> assembler file, the difference is quite obvious ...

Maybe this is responsible for part of PR21828?

Paolo

Follow-Ups:
- Re: 4.0 regression: missing debug info for global variables in C
  - From: Ulrich Weigand

References:
- Re: 4.0 regression: missing debug info for global variables in C with -O2
  - From: Andrew Pinski
- Re: 4.0 regression: missing debug info for global variables in C with -O2
  - From: Ulrich Weigand
- Re: 4.0 regression: missing debug info for global variables in C with -O2
  - From: Jakub Jelinek

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