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Using local register variable
- From: "Tal Agmon" <Tal dot Agmon at nsc dot com>
- To: gcc-help at gcc dot gnu dot org
- Cc: "Tomer Levi" <Tomer dot Levi at nsc dot com>
- Date: Tue, 30 Dec 2003 18:24:55 +0200
- Subject: Using local register variable
Hi,
The manual says:
You can define a local register variable with a specified register like
this:
register int *foo asm ("a5");
My question: is foo must be a pointer or can I define for example:
register int y asm ("a5");
I'm asking this because in gcc-3.3.2 I saw (in a very simple program with
no reason not the preserve a register)
that a5 was not preserved for y, and when I defined it as in the first
example, a5 WAS preserved for foo.
Regards,
Tal.