[PATCH] D29878: [lld/LTO] Add support for optimization remarks

[Davide Italiano via Phabricator via llvm-commits]

davide created this revision.

Quite easy now that the yak is shaved.
For info on the feature: http://llvm.org/devmtg/2016-11/Slides/Nemet-Compiler-assistedPerformanceAnalysis.pdf
Makes much easier to visualize optimization decisions (loop vectorizations, inlining decisions etc..). I plan to use it for tuning profile-guided inlining.
This was only supported for Mach-O, but I happen to be interested in another object format.


https://reviews.llvm.org/D29878

Files:
  ELF/Config.h
  ELF/Driver.cpp
  ELF/LTO.cpp
  ELF/Options.td
  test/ELF/lto/opt-remarks.ll

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