[PATCH] D28746: Mention ThinLTO with PGO in ReleaseNotes 4.0

[Mehdi AMINI via Phabricator via cfe-commits]

mehdi_amini added inline comments.


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Comment at: docs/ReleaseNotes.rst:69
+  called from cold callsite.
+
 
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We need to mention ThinLTO in the Release Notes, so thanks for initiating this. 
We likely should go with a paragraph summarizing the improvements, I don't know though if there is anything else than 1) PGO and 2) Significant build-time and binary-size improvements with debug-info.



https://reviews.llvm.org/D28746