[llvm] r174445 - Dwarf: support for LTO where a single object file can have multiple line tables

[Krzysztof Parzyszek]

On 2/5/2013 3:52 PM, Manman Ren wrote:
> Author: mren
> Date: Tue Feb  5 15:52:47 2013
> New Revision: 174445
>
> URL: http://llvm.org/viewvc/llvm-project?rev=174445&view=rev
> Log:
> Dwarf: support for LTO where a single object file can have multiple line tables
>
> We generate one line table for each compilation unit in the object file.
> Reviewed by Eric and Kevin.

This actually breaks things when you use the external assembler.  In the 
.s file the "line_table_start" symbols will be referenced, but not defined.

-Krzysztof


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