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Re: [PING*4] add support for dwarf AT_GNU_descriptive_type

> That's what we're talking about here: A performance improvement
> that allows the debugger to quickly find the required parallel
> type, instead of doing the expensive global lookup. 

Actually, on fsf mainline, the patch also happens to trigger the production of dwarf info for the parallel types, so there is more than just a perf objective. There is no just way to get proper display of many things today, not even slow, and the patch addresses that as well.

Olivier
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