Google Open-Sources Their AutoFDO Profile Toolchain
Written by Michael Larabel in Google on 7 May 2014 at 08:54 PM EDT. 1 Comment
Google has open-sourced their toolchain for providing automatic feedback-directed optimizations from perf data profiles to what can be used by GCC and LLVM.

Going back years Google has been working on AutoFDO optimizations for GCC and then last month they released similar support got LLVM. Google has now open-sourced their complete AutoFDO tool-chain.

From their new AutoFDO GitHub repository, "The repository contains a tool to convert perf.data profile to AutoFDO profile that can be used by GCC and LLVM. Each compiler is supported by a different tool. For GCC, use 'create_gcov'. For LLVM, use 'create_llvm_prof'. The two tools have compatible command line flags. However, the outputs are incompatible. You cannot use the profile generated for GCC in LLVM and vice-versa."

Dehao Chen announced the open-sourcing of all their AutoFDO work to the GCC developers. More details can be found via the Wiki.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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