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Re: A question about RTL output

From: Jim Wilson <wilson at specifix dot com>
To: Eric Fisher <joefoxreal at gmail dot com>
Cc: gcc at gcc dot gnu dot org
Date: Sun, 23 Oct 2005 14:46:09 -0700
Subject: Re: A question about RTL output
References: <d6afecde0510230045l1e431da7r@mail.gmail.com>

Eric Fisher wrote:

This is a strange problem. Why an operantion that should be a 'xorsi3'
format, yet it comes out with a 'scond' format.

Probably because it was optimized. If you want a better answer, you have to give us more info about what happened, such as a C testcase, and RTL dumps. But it is probably better if you look at this yourself. Generate debugging dumps, -da -fdump-tree-all, and then start looking. Presumably an XOR was generated at first, and then got optimized to an scond at some point. -- Jim Wilson, GNU Tools Support, http://www.specifix.com

References:
- A question about RTL output
  - From: Eric Fisher

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