Introduce a new cast kind for an "lvalue bitcast", which handles
reinterpret_casts (possibly indirectly via C-style/functional casts)
on values, e.g.,
int i;
reinterpret_cast<short&>(i);
The IR generated for this is essentially the same as for
*reinterpret_cast<short*>(&i).
Fixes PR6437, PR7593, and PR7344.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108294 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp
index bd97b88..6524a31 100644
--- a/lib/AST/Expr.cpp
+++ b/lib/AST/Expr.cpp
@@ -684,6 +684,8 @@
return "Unknown";
case CastExpr::CK_BitCast:
return "BitCast";
+ case CastExpr::CK_LValueBitCast:
+ return "LValueBitCast";
case CastExpr::CK_NoOp:
return "NoOp";
case CastExpr::CK_BaseToDerived:
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index a963182..3c97420 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -563,6 +563,7 @@
case CastExpr::CK_NoOp:
case CastExpr::CK_BitCast:
+ case CastExpr::CK_LValueBitCast:
case CastExpr::CK_AnyPointerToObjCPointerCast:
case CastExpr::CK_AnyPointerToBlockPointerCast:
return Visit(SubExpr);