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Author SHA1 Message Date
Tim Northover f8e47e4868 ARM: add support for WatchOS's compact unwind information. 
llvm-svn: 251573
 2015-10-28 22:56:36 +00:00
Tim Northover 910dde7ab2 ARM: prefer allocating VFP regs at stride 4 on Darwin. 
This is necessary for WatchOS support, where the compact unwind format assumes
this kind of layout. For now we only want this on Swift-like CPUs though, where
it's been the Xcode behaviour for ages. Also, since it can expand the prologue
we don't want it at -Oz.

llvm-svn: 243884
 2015-08-03 17:20:10 +00:00