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LDM instruction

Bin Li over 12 years ago

Note: This was originally posted on 16th December 2009 at http://forums.arm.com

Hi all,

I am studying ARM architecture.I have a board board with ARM922T

My doubt is whether the C compiler will generate the following type of code LDMIA r4, {r4, r5}

ie the Destination of the load instruction having the Source Address.

Thanks in Advance

Rajesh

Bin Li over 12 years ago

Note: This was originally posted on 16th December 2009 at http://forums.arm.com

Thank you,

Is there any method(compiler OR compiler setting ) to avoid the above kind of assembly code generation..

Regards,

Rajesh
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Simon Craske over 12 years ago

Note: This was originally posted on 16th December 2009 at http://forums.arm.com

Rajesh,

That kind of code can be provoked by something like:

typedef struct s { int a[2]; } t; t foo(t* x) { return *x; }

hth
s.
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Simon Craske over 12 years ago

Note: This was originally posted on 16th December 2009 at http://forums.arm.com

Not that I'm aware of; why would you want to prevent this?

s.
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