ARM Technical Support Knowledge Articles

ARE ARM7 32/64-BIT MAC INSTRUCTIONS SUPPORTED?

Applies to: CARM C Compiler

Answer


Information in this article applies to:


QUESTION

The ARM7TDMI instruction set includes four instructions which perform 32-bit by 32-bit multiplication with 64-bit result and 32-bit by 32-bit multiplication-accumulation (MAC) with 64-bit result. Does the Keil ARM compiler use these instructions?

ANSWER

No, this is not supported by the Keil ARM compiler. Use the RealView Compiler.

In the Project — Components, Environment and Books — Select ARM Development Tools dialog, select Use RealView Compiler.

MORE INFORMATION

Article last edited on: 2007-01-18 11:15:04

Rate this article

[Bad]
|
|
[Good]
Disagree? Move your mouse over the bar and click

Did you find this article helpful? Yes No

How can we improve this article?

Link to this article
Copyright © 2011 ARM Limited. All rights reserved. External (Open), Non-Confidential