On 23/04/18 09:55, jack4747@gmail.com wrote:
> Il giorno lunedì 23 aprile 2018 10:16:01 UTC+2, Gordon Henderson ha scritto:
>
>> I have looked at compiling my BASIC to native code - and there is more
>> or less a 1:1 relationship with a line of BASIC and a Line/Block of ASM
>> - it's no-where near efficient as C though (and 'compiling' BASIC into
>> C is just as easy and may actually result in faster code, but that's a
>> job for another day)
>
> It's not that C is inherently efficient, it's the compiler that optimize the
asm.
> If you compile a C source code with optimization disabled, you'll get a
(almost) 1:1 relationship line of C : line of asm.
>
> Bye Jack
>
I think that is only half of it: The other half is that C IS assembler,
written in shorthand. I cannot offhand think of any native c operation
that is not an atomic assembler operation.

Ok sometimes on some processors operation on the contents of memory are
two opcodes.

The difference with for example C++ is astonishing.

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