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| author | John McCall <rjmccall@apple.com> | 2012-03-30 04:25:03 +0000 |
|---|---|---|
| committer | John McCall <rjmccall@apple.com> | 2012-03-30 04:25:03 +0000 |
| commit | 56ea377bc58a3a821da917599ed26c6b37b9727c (patch) | |
| tree | 8906d81a5e2a3bd7d923f2abb8a6660bdf3ee300 /NOTES.txt | |
| parent | 3754f9656ab6a4648e5264d891ad5fb2f94f2a1a (diff) | |
| download | clang-56ea377bc58a3a821da917599ed26c6b37b9727c.tar.gz | |
Add a note about a missing optimization in the case of virtual
inheritance.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153722 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'NOTES.txt')
| -rw-r--r-- | NOTES.txt | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -101,3 +101,14 @@ only if the non-reachability is not due to macro or template metaprogramming. //===---------------------------------------------------------------------===// + +We can still apply a modified version of the constructor/destructor +delegation optimization in cases of virtual inheritance where: + - there is no function-try-block, + - the constructor signature is not variadic, and + - the parameter variables can safely be copied and repassed + to the base constructor because either + - they have not had their addresses taken by the vbase initializers or + - they were passed indirectly. + +//===---------------------------------------------------------------------===// |