[llvm-commits] PATCH: Fix DebugInfo codegen so that it doesn't duplicate debug info entries for variables in inlined functions (PR13202)

[Alexey Samsonov]

Hi!

DwarfDebug class can generate the same (inlined) DIVariable twice:
1) when trying to find abstract debug variable for a concrete inlined
instance
2) when explicitly collecting info for variables that were optimized out.

Duplicated DIEs for variables confuses e.g. gdb (it shows two identical
function arguments).
I've attached the proposed little patch and a testcase. Please take a look.

(more context - http://llvm.org/bugs/show_bug.cgi?id=13202)

-- 
Alexey Samsonov, MSK
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