Tom Stellard 07c8da8d24 Make PrologEpilogInserter save/restore all callee saved registers
in functions which call __builtin_unwind_init()

__builtin_unwind_init() is an undocumented gcc intrinsic which has this effect,
and is used in libgcc_eh.

Goes part of the way toward fixing PR8541.

Merged from r183984
Author: Derek Schuff <dschuff@google.com>
Date:   Fri Jun 14 16:15:29 2013 +0000

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_33@190578 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-12 03:18:08 +00:00
..
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