Update ReleaseNotes

Author: chapuni

clang/docs/ReleaseNotes.rst

@@ -116,6 +116,8 @@ Improvements to Clang's time-trace
 Improvements to Coverage Mapping
 --------------------------------
 
+- [MC/DC] Nested expressions are handled as individual MC/DC expressions.
+
 Bug Fixes in This Version
 -------------------------
 

clang/docs/SourceBasedCodeCoverage.rst

@@ -510,13 +510,6 @@ requires 8 test vectors.
 Expressions such as ``((a0 && b0) || (a1 && b1) || ...)`` can cause the
 number of test vectors to increase exponentially.
 
-Also, if a boolean expression is embedded in the nest of another boolean
-expression but separated by a non-logical operator, this is also not supported.
-For example, in ``x = (a && b && c && func(d && f))``, the ``d && f`` case
-starts a new boolean expression that is separated from the other conditions by
-the operator ``func()``.  When this is encountered, a warning will be generated
-and the boolean expression will not be instrumented.
-
 Switch statements
 -----------------