there's an explicit guard on isPolymorphic, and virtual bases don't affect the
key function calculation.  This allows people to call
ASTContext::getKeyFunction on arbitrary classes.

llvm-svn: 107143

llvm-svn: 105920

Implement part of the EmptySubobjectMap optimization described in PR6998. We still need to do this for bases.

llvm-svn: 105919

llvm-svn: 105628

When checking whether we can place a base subobject at an offset, we don't need to go past the highest offset that's known to contain an empty base subobject.

llvm-svn: 105611

llvm-svn: 105608

llvm-svn: 105162

Turn on the new empty base subobject tracking code. It's a bit faster than the previous code. However, it still has quadratic performance, something which I intend to fix shortly in a subsequent patch.

llvm-svn: 105161

llvm-svn: 105114

llvm-svn: 105113

llvm-svn: 105112

Rework the way virtual primary bases are added when laying out classes. Instead of doing it as a separate step, we now use the BaseSubobjectInfo and use it when laying out the bases. This fixes a bug where we would either not add a primary virtual base at all, or add it at the wrong offset.

llvm-svn: 105110

llvm-svn: 105104

Change RecordLayoutBuilder::LayoutNonVirtualBase to take a BaseSubobjectInfo. No functionality change.

llvm-svn: 105103

Move computing the base subobject info for a class into the RecordLayoutBuilder because we're going to need it to be able to correctly add offsets for primary virtual bases.

llvm-svn: 105102

llvm-svn: 105007

llvm-svn: 105002

llvm-svn: 104861

 - Docs are fairly sketchy, if someone wants to pore through gcc to look for
   holes I'd appreciate any failing test cases!

llvm-svn: 104809

llvm-svn: 104808

llvm-svn: 104801

llvm-svn: 104795

llvm-svn: 104787

llvm-svn: 104702

llvm-svn: 104701

llvm-svn: 104700

llvm-svn: 104695

llvm-svn: 104693

llvm-svn: 104688

llvm-svn: 104686

llvm-svn: 104683

llvm-svn: 104682

llvm-svn: 104681

llvm-svn: 104674

llvm-svn: 104673

Fold the ASTRecordLayoutBuilder::ComputeLayout overload that takes an ObjCInterfaceDecl pointer into its only callsite.

llvm-svn: 104672

Move the relevant ASTContext member functions that deal with ASTRecordLayoutBuilder into RecordLayoutBuilder.cpp. This matches the way we interact with other builder classes (CGRecordLayoutBuilder, VTableBuilder and VTTBuilder) and it also allows for making ASTRecordLayoutBuilder a private class without a header file.

llvm-svn: 104671

llvm-svn: 104464

llvm-svn: 103403

llvm-svn: 103402