[PATCH] D11085: compiler-rt: add support for mingw-w64 in builtins

[Vadim Chugunov via cfe-commits]

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Hi!
So apparently LLVM lowers `alloca`'s of large buffers into a call to `_alloca` (makes sense I guess - if the buffer is larger than a page).
Why wasn't it added along with `_chkstk`?   Is `_alloca` available from some other mingw library?


Repository:
  rL LLVM

http://reviews.llvm.org/D11085