Fix ARM HVA classification of classes with non-virtual bases

Reuse the PPC64 HVA detection algorithm for ARM and AArch64. This is a
nice code deduplication, since they are roughly identical. A few virtual
method extension points are needed to understand how big an HVA can be
and what element types it can have for a given architecture.

Also make the record expansion code work in the presence of non-virtual
bases.

Reviewed By: uweigand, asl

Differential Revision: http://reviews.llvm.org/D6045

llvm-svn: 220972

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/ABIInfo.h b/clang/lib/CodeGen/ABIInfo.h
index 9ca576630be..2976b605d39 100644
--- a/clang/lib/CodeGen/ABIInfo.h
+++ b/clang/lib/CodeGen/ABIInfo.h
@@ -73,6 +73,15 @@ namespace clang {
     // abstract this out.
     virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty,
                                    CodeGen::CodeGenFunction &CGF) const = 0;
+
+    virtual bool isHomogeneousAggregateBaseType(QualType Ty) const;
+
+    virtual bool isHomogeneousAggregateSmallEnough(const Type *Base,
+                                                   uint64_t Members) const;
+
+    bool isHomogeneousAggregate(QualType Ty, const Type *&Base,
+                                uint64_t &Members) const;
+
   };
 }  // end namespace clang