[LLVMdev] DIFactory interface is going away

[Jason Kim]

On Thu, Feb 24, 2011 at 1:29 PM, Devang Patel <dpatel at apple.com> wrote:
> Hi All,
> DIFactory interface, part of DebugInfo.h, is used to emit LLVM IR constructs
> to encode debugging information. We are replacing this interface with new
> simple interface, DIBuilder.
> Here is one example that demonstrates differences between two interfaces. To
> create debug information entries to encode volatile type one would use
> following call in a language front end,
> CreateDerivedType(DW_TAG_volatile_type, Context, StringRef(), File,
>                           0 /*line no*/, type_size_in_bits,
> type_align_in_bits,
>                           0 /* offset */, 0 /* flags */, OriginalType);
> using DIFactory interface. Now, DIBuilder allows you to do the same using
> following call.
> createQualifiedType(DW_TAG_volatile_type, OriginalType);
> DIBuilder interface was introduced in Nov/Dec last year. Now, clang has
> fully adopted this new interface. So we are going to remove DIFactory from
> llvm sources soon. Our plan is to move DIFactory interface in dragonegg (and
> llvm-gcc) for now until the front-ends adopt DIBuilder.
> If you have any concerns about this plan, please speak up now.

Assuming it has no impact on the actual dwarf tags, smaller code is better!
-jason


> -
> Devang
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