Carlos Alberto Enciso 81d8ef2196 [DebugInfo][Dexter] Incorrect DBG_VALUE after MCP dead copy instruction removal. ...

When MachineCopyPropagation eliminates a dead 'copy', its associated debug information becomes invalid. as the recorded register has been removed.  It causes the debugger to display wrong variable value.

Differential Revision: https://reviews.llvm.org/D52614

llvm-svn: 343445

2018-10-01 08:14:44 +00:00

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