Code refactoring to define getCXXRecordDeclForPointerType

and use it in several places.

llvm-svn: 77411

1 files changed, 5 insertions, 12 deletions

diff --git a/clang/lib/CodeGen/CGExprScalar.cpp b/clang/lib/CodeGen/CGExprScalar.cpp
index 5ded216f03ab..d78082463217 100644
--- a/clang/lib/CodeGen/CGExprScalar.cpp
+++ b/clang/lib/CodeGen/CGExprScalar.cpp
@@ -442,18 +442,11 @@ Value *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType,
     // The source value may be an integer, or a pointer.
     if (isa<llvm::PointerType>(Src->getType())) {
       // Some heavy lifting for derived to base conversion.
-      if (const PointerType *PT = SrcType->getAsPointerType()) {
-        QualType SrcClassTy = PT->getPointeeType();
-        if (const RecordType *RT = SrcClassTy->getAsRecordType())
-          if (CXXRecordDecl *ClassDecl =
-              dyn_cast<CXXRecordDecl>(RT->getDecl())) {
-            QualType DstClassType = DstType->getPointeeType();
-            if (const RecordType *DRT = DstClassType->getAsRecordType())
-              if (CXXRecordDecl *BaseClassDecl = 
-                    dyn_cast<CXXRecordDecl>(DRT->getDecl()))
-                Src = CGF.AddressCXXOfBaseClass(Src, ClassDecl, BaseClassDecl);
-          }
-      }
+      if (const CXXRecordDecl *ClassDecl = 
+            SrcType->getCXXRecordDeclForPointerType())
+        if (const CXXRecordDecl *BaseClassDecl = 
+              DstType->getCXXRecordDeclForPointerType())
+          Src = CGF.AddressCXXOfBaseClass(Src, ClassDecl, BaseClassDecl);
       return Builder.CreateBitCast(Src, DstTy, "conv");
     }
     assert(SrcType->isIntegerType() && "Not ptr->ptr or int->ptr conversion?");