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...tra code path to maintain. Do you agree? -------------- next part -------------- A non-text attachment was scrubbed... Name: function-local-metadata-v1.patch Type: application/octet-stream Size: 27510 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160323/0b19393f/attachment-0001.obj>

I have some ideas to allow the BitcodeReader to lazy-load debug info metadata, and wanted to air this on llvm-dev before getting too deep into the code. Motivation ========== Based on some analysis Mehdi ran (ping him for details), there are three (related) compile-time bottlenecks we're seeing with `-flto=thin -g`: a) Reading the large number of Metadata bitcode records in the global