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Re: code block simply not generated

From: Jim Wilson <wilson at specifix dot com>
To: stephane duverger <stephane dot duverger at free dot fr>
Cc: gcc-bugs at gcc dot gnu dot org
Date: Mon, 09 Apr 2007 12:59:09 -0700
Subject: Re: code block simply not generated
References: <1175703532.3544.317.camel@localhost.localdomain>

stephane duverger wrote:

Father was removed because of "goto __end", simply because gcc thought
that this code part will never be reached. But process is cloned() and
it should have taken into account the "jnz father"

Gcc does not look at the contents of an asm, so it does not know that there is a branch to father.

Branches are not supported in asms. This is mentioned in the gcc manual. We can not get control flow correct in this case, and hence can not optimize correctly. -- Jim Wilson, GNU Tools Support, http://www.specifix.com

References:
- code block simply not generated
  - From: stephane duverger

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