Reid Kleckner c9fbc97e95 x86: Fix large model calls to __chkstk for dynamic allocas
In the large code model, we now put __chkstk in %r11 before calling it.

Refactor the code so that we only do this once. Simplify things by using
__chkstk_ms instead of __chkstk on cygming. We already use that symbol
in the prolog emission, and it simplifies our logic.

Second half of PR18582.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227519 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-29 23:58:04 +00:00
..
2015-01-24 18:20:52 +00:00