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Diffstat (limited to 'docs/ReleaseNotes.rst')
| -rw-r--r-- | docs/ReleaseNotes.rst | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst index 5b035cd3320f..25ea577ba519 100644 --- a/docs/ReleaseNotes.rst +++ b/docs/ReleaseNotes.rst @@ -46,8 +46,35 @@ Major New Features clang to emit a warning or error if a function call meets one or more user-specified conditions. +- Enhanced devirtualization with + `-fstrict-vtable-pointers <UsersManual.html#cmdoption-fstrict-vtable-pointers>`_. + Clang devirtualizes across different basic blocks, like loops: + + .. code-block:: c++ + + struct A { + virtual void foo(); + }; + void indirect(A &a, int n) { + for (int i = 0 ; i < n; i++) + a.foo(); + } + void test(int n) { + A a; + indirect(a, n); + } + + - ... +Improvements to ThinLTO (-flto=thin) +------------------------------------ +- Integration with profile data (PGO). When available, profile data enables + more accurate function importing decisions, as well as cross-module indirect + call promotion. +- Significant build-time and binary-size improvements when compiling with debug + info (-g). + Improvements to Clang's diagnostics ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |