and destructors when the two entities are semantically identical, i.e. when
the class has no virtual base classes.  We only do this for linkage types
for which aliases are supported, i.e. internal and external, i.e. not linkonce.

llvm-svn: 96451

llvm-svn: 96449

llvm-svn: 96446

Correctly calculate base offsets for 'this' pointer adjustments involving virtual bases. This can't be tested yet due to lack of vcall offsets :)

llvm-svn: 96441

repeatedly reloading from an alloca.  We still need to create the alloca
for debug info purposes (although we currently create it in all cases
because of some abstraction boundaries that're hard to break down).

llvm-svn: 96403

llvm-svn: 96397

llvm-svn: 96376

IRgen: Add CreateIRTemp, which creates a temporary alloca but with type converted "not-for-memory". Dunno a better name.

llvm-svn: 96374

llvm-svn: 96373

llvm-svn: 96355

llvm-svn: 96354

llvm-svn: 96351

llvm-svn: 96329

llvm-svn: 96328

the offset to the virtual bases statically inside of relying on the virtual
base offsets in the object's vtable(s).  This is both more efficient and
sound against the destructor's manipulation of the vtables.

Also extract a few helper routines.

Oh and we seem to pass all tests with an optimized clang now.

llvm-svn: 96327

llvm-svn: 96245

isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!

llvm-svn: 96224

on the alloca.

The fact that codegen makes this class of bug so wonderfully easy to make is
embarrassing.

llvm-svn: 96204

llvm-svn: 96171

llvm-svn: 96140

llvm-svn: 96139

llvm-svn: 96138

Improve support for non-virtual 'this' pointer adjustments. With this, it should be possible to use the new vtable layout code for all class hierarchies that do not involve virtual bases.

llvm-svn: 96137

llvm-svn: 96136

llvm-svn: 96133

llvm-svn: 96131

llvm-svn: 96125

llvm-svn: 96123

llvm-svn: 96121

llvm-svn: 96120

llvm-svn: 96119

llvm-svn: 96117

llvm-svn: 96114

marked 'force_align_arg_pointer'. Almost there; now all I need to do is finish
up the backend.

llvm-svn: 96100

llvm-svn: 96099

llvm-svn: 96098

llvm-svn: 96087

llvm-svn: 96086

llvm-svn: 96070

Use that while fixing a nasty misuse of qsort in vtable codegen which, somehow,
has not actually caused a crash.

llvm-svn: 96062