[tremor] Re: good version of alloca()

[Segher Boessenkool]

> Actually, the real reason to use alloca is that it's about three asm
> opcodes, can be inlined trivially, requires no system call, will not
> add to heap fragmentation, etc, etc.  It is the fast way to get
> temporary storage.  very fast.

Zero asm opcodes on a decent architecture, actually (with a good
optimizing compiler).  And the most important reason it's fast is its
cache locality (as soon as one alloca() users releases an area, the next
user will pick up _that same_ area.  Excellent.)

<p>Segher
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