Jason Molenda 34549b8f75 Change the x86 assembly instruction unwind parser to ...

step through the complete function looking for any epilogue
instructions.  If we find an epilogue sequence, re-instate
the correct unwind instructions if there is more code past
that epilogue -- this will correctly handle an x86 function
with multiple epilogues in it.

NB there is still a bug with the "eh_frame augmented" 
UnwindPlans and mid-function epilogues.  Looking at that next.

<rdar://problem/18863406> 

llvm-svn: 225770

2015-01-13 06:04:04 +00:00

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