replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ir-gen derived-to-base conversion in implicit casts. 

llvm-svn: 77374
This commit is contained in:
Fariborz Jahanian 2009-07-28 22:00:58 +00:00
parent 5196c9c7c9
commit f17071580f
1 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
clang/lib/CodeGen/CGExprScalar.cpp
View File

@ -440,8 +440,22 @@ Value *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType,
// pointer type.
if (isa<llvm::PointerType>(DstTy)) {
// The source value may be an integer, or a pointer.
if (isa<llvm::PointerType>(Src->getType()))
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);
}
}
return Builder.CreateBitCast(Src, DstTy, "conv");
}
assert(SrcType->isIntegerType() && "Not ptr->ptr or int->ptr conversion?");
// First, convert to the correct width so that we control the kind of
// extension.