[PATCH] D28727: Add -fstrict-vtable-pointers to UserManual

Piotr Padlewski via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Mon Jan 16 05:31:09 PST 2017

This revision was automatically updated to reflect the committed changes.
Prazek marked an inline comment as done.
Closed by commit rL292112: Add -fstrict-vtable-pointers to UsersManual (authored by Prazek).

Changed prior to commit:




Index: cfe/trunk/docs/UsersManual.rst
--- cfe/trunk/docs/UsersManual.rst
+++ cfe/trunk/docs/UsersManual.rst
@@ -1097,6 +1097,13 @@
    the behavior of sanitizers in the ``cfi`` group to allow checking
    of cross-DSO virtual and indirect calls.
+.. option:: -fstrict-vtable-pointers
+   Enable optimizations based on the strict rules for overwriting polymorphic
+   C++ objects, i.e. the vptr is invariant during an object's lifetime.
+   This enables better devirtualization. Turned off by default, because it is
+   still experimental.
 .. option:: -ffast-math
    Enable fast-math mode. This defines the ``__FAST_MATH__`` preprocessor

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