[PATCH] D107994: Making the code compliant to the documentation about Floating Point support default values for C/C++. FPP-MODEL=PRECISE enables FFP-CONTRACT (FMA is enabled).

[Zahira Ammarguellat via Phabricator via cfe-commits]

zahiraam updated this revision to Diff 387337.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107994/new/

https://reviews.llvm.org/D107994

Files:
  clang/docs/ReleaseNotes.rst


Index: clang/docs/ReleaseNotes.rst
===================================================================
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -205,11 +205,16 @@
 
 Floating Point Support in Clang
 -------------------------------
-- The -ffp-model=precise now implies -ffp-contract=on rather than
-  -ffp-contract=fast, and the documentation of these features has been
-  clarified. Previously, the documentation claimed that -ffp-model=precise was
-  the default, but this was incorrect because the precise model implied
-  -ffp-contract=fast, whereas the default behavior is -ffp-contract=on.
+- The default setting of FP contraction (FMA) is now -ffp-contract=on (for
+  languages other than CUDA/HIP) even when optimization is off. Previously,
+  the default behavior was equivalent to -ffp-contract=off (-ffp-contract
+  was not set).
+  Related to this, the switch -ffp-model=precise now implies -ffp-contract=on
+  rather than -ffp-contract=fast, and the documentation of these features has
+  been clarified. Previously, the documentation claimed that -ffp-model=precise
+  was the default, but this was incorrect because the precise model implied
+  -ffp-contract=fast, wheras the (now corrected) default behavior is
+  -ffp-contract=on.
   -ffp-model=precise is now exactly the default mode of the compiler.
 
 Internal API Changes


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