Jakob Stoklund Olesen 9c057ee440 Dont emit 'DBG_VALUE %noreg, ...' to terminate user variable ranges. ...

These ranges get completely jumbled by the post-ra scheduler, and it is not
really reasonable to expect it to make sense of them.

Instead, teach DwarfDebug to notice when user variables in registers are
clobbered, and terminate the ranges there.

llvm-svn: 128045

2011-03-22 00:21:41 +00:00

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