[LLVMdev] Explicitly Freeing Allocas

[Frits van Bommel]

Nyx wrote:
[re: llvm.stacksave & stackrestore]
> What kind of overhead does that have? Does it only restore the stack pointer
> to what it was (what I want), or does it do more than that, and try to
> restore values that were on the stack prior to save, etc?

It basically just copies and restores the stack pointer, though I guess the 
langref isn't exactly very clear on that point.