[PATCH] D58675: [clang] Adds `-ftime-trace` option to clang that produces Chrome `chrome://tracing` compatible JSON profiling output dumps

[Nico Weber via Phabricator via llvm-commits]

thakis added a comment.

Looks like this landed without tests. Please add tests in a follow-up.

Also, it looks like the flag is currently a cc1 flag. This should probably be a CoreOption instead so that both the gcc-style and the cl-style drivers expose it. Right now, users can't really use this if I read the patch right (without using -Xclang, which is discouraged.)


Repository:
  rL LLVM

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  https://reviews.llvm.org/D58675/new/

https://reviews.llvm.org/D58675