Duncan P. N. Exon Smith 41a1546ebc SampleProfile: Check for missing debug locations ...

Don't use `DebugLoc` accessors if we're pointing at null, which will be
a problem after a WIP patch to make the `DIDescriptor` accessors more
strict.  Caught by Frontend/profile-sample-use-loc-tracking.c (in
clang).

llvm-svn: 232792

2015-03-20 00:56:55 +00:00

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