ARM: correct Dwarf output for non-contiguous VFP saves.
When the list of VFP registers to be saved was non-contiguous (so multiple vpush/vpop instructions were needed) these were being ordered oddly, as in: vpush {d8, d9} vpush {d11} This led to the layout in memory being [d11, d8, d9] which is ugly and doesn't match the CFI_INSTRUCTIONs we're generating either (so Dwarf info would be broken). This switches the order of vpush/vpop (in both prologue and epilogue, obviously) so that the Dwarf locations are correct again. rdar://problem/16264856 llvm-svn: 203655
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