Simplify code a bit, no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211985 91177308-0d34-0410-b5e6-96231b3b80d8
Use a range loop. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211986 91177308-0d34-0410-b5e6-96231b3b80d8
Add ops() method to SDNode that returns an ArrayRef<SDUse>. Use it to simplify some code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211993 91177308-0d34-0410-b5e6-96231b3b80d8
MC: rename EmitWin64EH routines

Rename the routines to reflect the reality that they are more related to call
frame information than to Win64 EH. Although EH is implemented in an intertwined
manner by augmenting with an exception handler and an associated parameter, the
majority of these routines emit information required to unwind the frames. This
also helps identify that these routines are generic for most windows platforms
(they apply equally to nearly all architectures except x86) although the
encoding of the information is architecture dependent.

Unwinding data is emitted via EmitWinCFI* and exception handling information via
EmitWinEH*.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211994 91177308-0d34-0410-b5e6-96231b3b80d8