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Re: ldreqd instruction in xscale

From: Phil Blundell <pb at nexus dot co dot uk>
To: Arvind Krishnaswamy <arvind at CS dot Arizona dot EDU>
Cc: gcc at gcc dot gnu dot org
Date: 25 Jan 2002 10:03:54 +0000
Subject: Re: ldreqd instruction in xscale
References: <Pine.LNX.4.33.0201241502510.25737-100000@banco.CS.Arizona.EDU>

On Thu, 2002-01-24 at 22:12, Arvind Krishnaswamy wrote:
> I used the -march=armv4t with both the arm-elf-gcc compiler and xscale-elf-gcc
> compiler. But xscale-elf-gcc generates different code. The ldreqd instruction
> is used code generated by xscale-elf-gcc bt is absent in code generated by
> arm-elf-gcc. Doesn't -march=armv4t specify the instruction to be used? 

LDRD is an ARMv5E ("El Segundo") instruction.  So yes, I would expect
-march=armv4t to suppress generation of those.  Do you have a testcase
that shows the problem?

p.

Follow-Ups:
- Re: ldreqd instruction in xscale
  - From: Richard Earnshaw
- Re: ldreqd instruction in xscale
  - From: Arvind Krishnaswamy

References:
- ldreqd instruction in xscale
  - From: Arvind Krishnaswamy

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