[Bug inline-asm/39847] 16 symbolic register names generates error: more than 30 operands in 'asm'

[d at teklibre dot com]

------- Comment #13 from d at teklibre dot com  2009-04-22 17:55 -------
@Andrew
>I suspect the reason the limit is 30 is that when that code was written the
>largest register set was 32 registers, 2 of which were reserved to the
>implementation.  Inline asm hasn't kept up with the hardware.

That old huh? Given that I/O operands take two virtual regs... methinks that
the history of this is more of an x86ism... 

and symbolic register parameters date back to gcc 3.1....


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39847