asm stackframe question

Stefan stefan at schuerger.com
Sun Apr 8 15:25:53 PDT 2012


On Saturday, 7 April 2012 at 23:50:42 UTC, bearophile wrote:
> Keep also in mind that D functions that contain ASM don't get 
> inlined in DMD (and probably elsewhere too).

BTW: The GCC backend has a pretty powerful ASM support where 
inlining IS possible and you can simply say things like 'give me 
a free register which supports the XYZ operation' and the backend 
optimizer does the register juggling (such as saving any used 
registers on the stack first or choosing a free one) for you - 
which is essential for sensible inlining.

OK, that's not of much use on an architecture with a feeble 
register set such as i386, but it's a pretty powerful feature 
with architectures with lots of general registers such as m68k or 
SPARC.

But I'm drifting off...

Cheers,
Stefan


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