Re: Correct way to express to the compiler "this does not get clobbered"?

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On Fri, Dec 04, 2020 at 10:52:17AM +0100, Andrea Corallo via Gcc-help wrote:
> stefan@xxxxxxxxx writes:
> I might open a bug but my understanding is that const is generally
> not used for optimizations.  Am I wrong?

extern const int x = 42;
int f(void) { return x; }

The code generated for f does not load the value for x from memory: it
returns 42 always.


Segher



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