Ignore non-interesting bases when emitting construction vtables.
llvm-svn: 98177
diff --git a/clang/lib/CodeGen/CGVtable.cpp b/clang/lib/CodeGen/CGVtable.cpp
index 4500ec0..caf1e1f9 100644
--- a/clang/lib/CodeGen/CGVtable.cpp
+++ b/clang/lib/CodeGen/CGVtable.cpp
@@ -1800,6 +1800,17 @@
if (!BaseDecl->isDynamicClass())
continue;
+ if (isBuildingConstructorVtable()) {
+ // Itanium C++ ABI 2.6.4:
+ // Some of the base class subobjects may not need construction virtual
+ // tables, which will therefore not be present in the construction
+ // virtual table group, even though the subobject virtual tables are
+ // present in the main virtual table group for the complete object.
+ if (!BaseDecl->getNumVBases()) {
+ continue;
+ }
+ }
+
// Get the base offset of this base.
uint64_t RelativeBaseOffset = Layout.getBaseClassOffset(BaseDecl);
uint64_t BaseOffset = Base.getBaseOffset() + RelativeBaseOffset;