Dean Michael Berris 418da3fe80 [XRay] [clang] Allow logging the first argument of a function call. ...

Summary:
Functions with the "xray_log_args" attribute will tell LLVM to emit a special
XRay sled for compiler-rt to copy any call arguments to your logging handler.

Reviewers: dberris

Reviewed By: dberris

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D29704

llvm-svn: 296999

2017-03-06 07:08:21 +00:00

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