Reid Kleckner 9a593ee7d2 [codeview] Bail on a DBG_VALUE register operand with no register ...

This apparently comes up when the register allocator decides that a
variable will become undef along a certain path.

Also improve the error message we emit when we can't map from LLVM
register number to CV register number.

llvm-svn: 261016

2016-02-16 21:49:26 +00:00

27 KiB

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