diff options
| author | John McCall <rjmccall@apple.com> | 2010-03-30 23:58:03 +0000 |
|---|---|---|
| committer | John McCall <rjmccall@apple.com> | 2010-03-30 23:58:03 +0000 |
| commit | 23cba801e11b03929c44f8cf54578305963a3476 (patch) | |
| tree | 7a1edfa728d0b5e9f0a9732d0faaec43ad2aa242 /lib/Sema/SemaExpr.cpp | |
| parent | 658f679b63cf92204d707c5dfc1251ae8f3c0762 (diff) | |
Introduce a new kind of derived-to-base cast which bypasses the need for
null checks, and make sure we elide null checks when accessing base class
members.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99963 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Sema/SemaExpr.cpp')
| -rw-r--r-- | lib/Sema/SemaExpr.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp index e232230db7..0980710b3d 100644 --- a/lib/Sema/SemaExpr.cpp +++ b/lib/Sema/SemaExpr.cpp @@ -1461,7 +1461,7 @@ Sema::PerformObjectMemberConversion(Expr *&From, if (PointerConversions) QType = Context.getPointerType(QType); - ImpCastExprToType(From, QType, CastExpr::CK_DerivedToBase, + ImpCastExprToType(From, QType, CastExpr::CK_UncheckedDerivedToBase, /*isLvalue*/ !PointerConversions); FromType = QType; @@ -1497,7 +1497,7 @@ Sema::PerformObjectMemberConversion(Expr *&From, QualType UType = URecordType; if (PointerConversions) UType = Context.getPointerType(UType); - ImpCastExprToType(From, UType, CastExpr::CK_DerivedToBase, + ImpCastExprToType(From, UType, CastExpr::CK_UncheckedDerivedToBase, /*isLvalue*/ !PointerConversions); FromType = UType; FromRecordType = URecordType; @@ -1517,8 +1517,8 @@ Sema::PerformObjectMemberConversion(Expr *&From, // FIXME: isLvalue should be !PointerConversions here, but codegen // does very silly things. - ImpCastExprToType(From, DestType, CastExpr::CK_DerivedToBase, - /*isLvalue=*/ true); + ImpCastExprToType(From, DestType, CastExpr::CK_UncheckedDerivedToBase, + /*isLvalue=*/ !PointerConversions); return false; } |