Re: [sdcc-devel] What is the difference between the rMask & rSurv in a icode

[Philipp K. K. <pk...@sp...>]

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Am 09.02.2014 10:29, schrieb Ben Shi:
> once these 2 values were set by the register allocstor, can they be
> changed in the instrustion selection stage?

Their main purpose is communicating information from register
allocation to code generation. I'm not usre about all the ports, but
I'm quite sure that for stm8, hc08, z80 and related their final values
are determined by register allocation (they might be written later,
but even then only based on information from register allcoation).

Philipp
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