[PATCH] D79590: [lld] Add a new section ".text.unknown" for funtions with unknown hotness info especially in sampleFDO

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

>   Add a new section ".text.unknown"

Add a new *output* section



================
Comment at: lld/ELF/Writer.cpp:131
+  // ".text.unknown" means the hotness of the section is unknown. When
+  // SampleFDO is used, if function doesn't have sample, it could be very
+  // cold or it could be new function never being sampled. Those functions
----------------
a function


================
Comment at: lld/ELF/Writer.cpp:132
+  // SampleFDO is used, if function doesn't have sample, it could be very
+  // cold or it could be new function never being sampled. Those functions
+  // will be kept in the ".text.unknown" section.
----------------
a new function


Repository:
  rLLD LLVM Linker

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  https://reviews.llvm.org/D79590/new/

https://reviews.llvm.org/D79590