[PATCH] Anonymous namespaces are missing import DW_TAG_imported_module.

[Katya Romanova]

I wanted to point out that that GCC compiler and LLVM compiler produce slightly different DWARF. Is our generation OK?

GCC
<1><73>: Abbrev Number: 4 (DW_TAG_namespace)
 <74>   DW_AT_sibling     : <0x82>	                                                  
...
<1><82>: Abbrev Number: 6 (DW_TAG_imported_module) 
 <83>   DW_AT_decl_file   : 1	
 <84>   DW_AT_decl_line   : 4	
 <85>   DW_AT_import      : <0x73>	[Abbrev Number: 4 (DW_TAG_namespace)]

LLVM:
<1><2a>: Abbrev Number: 2 (DW_TAG_namespace)
 <2b>   DW_AT_decl_file   : 1	
 <2c>   DW_AT_decl_line   : 4	
...
<1><47>: Abbrev Number: 4 (DW_TAG_imported_module)
 <48>   DW_AT_import      : <0x2a>	[Abbrev Number: 2 (DW_TAG_namespace)]
 <4c>   DW_AT_artificial  : 1


http://reviews.llvm.org/D7895

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