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Author SHA1 Message Date
Justin Holewinski 660597d190 Make AsmPrinter::emitImplicitDef a virtual method so targets can emit custom comments for implicit defs 
For NVPTX, this fixes a crash where the emitImplicitDef implementation was expecting physical registers,
while NVPTX uses virtual registers (with a couple of exceptions).  Now, the implicit def comment will be
emitted as a true PTX register name. Other targets can use this to customize the output of implicit def
comments.

Fixes PR17519

llvm-svn: 192444
 2013-10-11 12:39:36 +00:00