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Re: Optimizing of explicit temporary storage


Yes, but that's rather a different situation due to the nature of Scheme.

In C, even given just:

(void) malloc(16);

it would be surprising to most programmers to optimize away the call
because malloc *does* have side-effects on real systems.  For example,
on UNIX, it is likely to call sbrk, which result in observable changes
in the process state.

Well, yes, but

int x[65536];

also results in observable changes in the process state, and we don't
hesitate to optimise it away.

I believe LLVM actually does all kinds of promotion that ends up removing malloc calls. Maybe i'm just misremembering.
Chris, am i on crack?

--Dan

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