Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192642 91177308-0d34-0410-b5e6-96231b3b80d8
Add the "no-split-stack" attribute

This disable emission of segmented-stack prologues on a per-function basis, even
if segmented stacks are turned on globally.
Implement the fixed stack segment attribute
Add command line argument for setting fixedstacksegment size
Splitstack implementation for android
Splitstack support for arm/linux.
Add MIPS segmented stacks
Work around an assertion that rust is tripping
Support segmented stack on Win64

Identical to Win32 method except for 0x14 -> 0x28 and FS -> GS.
Disable EH table on mingw/SEH