[PATCH] Fix hardcoded stack probe space

[Andrew H]

> What happens if we do LTO?


Well, if nothing else is specified, it will take the default stack probe size; that means that the behavior with LTO is as it was before.

> Don't we need to record the probe size on the function?


Great suggestion! That might be useful.

> It wouldn't make sense to make it a command line flag if we supported this on a per function basis.


I think that the stack alignment is also tracked on a per function basis, and there is still a command line flag for overriding that.

My aim is currently to get MSVC's /Gs into LLVM, and I cannot see how one could do that without a command line flag.

I will look how the stack alignment is specified when using LTO and will report back if that is also useful in this case.


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http://reviews.llvm.org/D6684

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