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

[Manman Ren]

PING with updated patch.

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On Jan 25, 2013, at 4:05 PM, Manman Ren <mren at apple.com> wrote:

> 
> Hello,
> 
> With LTO, we will generate a single object file with multiple compilation units, and we used to generate a single combined line table
> and all compilation units will point to the same line table.
> 
> With this patch, we will generate one line table for each compilation unit in the object file.
> 
> Added the following members in MCContext:
> +    /// The Compile Unit ID that we are currently processing.
> +    int DwarfCompileUnitID;
> +    /// The line table start symbol for each Compile Unit.
> +    DenseMap<int, MCSymbol *> MCLineTableSymbols;
> Modified members in MCLineSection:
> -    MCLineEntryCollection MCLineEntries;
> +    // A collection of MCLineEntry for each Compile Unit ID.
> +    DenseMap<int, MCLineEntryCollection> MCLineDivisions;
> 
> Please review,
> 
> Thanks,
> Manman
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