Re: [cc65] const/volatile

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From: Christian Krüger (christian.krueger_at_pace.de)
Date: 2003-01-16 11:54:12 

Hi,

> Which improvements do you mean? I cannot see how declaring a 
> parameter as
> const can improve code generation. Something like the new 
>...

if a parameter declared as const, you shouldn't/cannot modify
its value, so when reusing this value, you don't have
to fetch it again... - again my sample:

--8<--------------------------------------------

void __fastcall__ func1(unsigned char const x);
void __fastcall__ func2(unsigned char x);

--
unsigned char x = 10;
func1(x);			// actual no need to save and restore
func2(x);			// accu and x (reuse)

--8<--------------------------------------------

Regards
chrisker
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