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Re: Which opcodes emitted by gcc for various arches

From: Jim Wilson <wilson at tuliptree dot org>
To: Kris Warkentin <kewarken at qnx dot com>
Cc: gcc at gcc dot gnu dot org
Date: Thu, 21 Aug 2003 10:52:39 -0700
Subject: Re: Which opcodes emitted by gcc for various arches
References: <056f01c366a1$30fb01b0$0202040a@catdog>

Kris Warkentin wrote:

Is there any easy way to know which opcodes gcc is capable of emitting when
optimizing for various platforms?

No.

For example, if I wanted to know whether gcc will use the trv and ftrv
instructions for sh4, how could I discover that?

You can grep the SH backend for the string "trv". This requires knowing enough about gcc to understand what you find though. -- Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com

References:
- Which opcodes emitted by gcc for various arches
  - From: Kris Warkentin

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