[cfe-commits] r88810 - in /cfe/trunk: lib/CodeGen/CGExpr.cpp test/CodeGenCXX/reinterpret-cast.cpp

[Anders Carlsson]

Author: andersca
Date: Sat Nov 14 15:21:42 2009
New Revision: 88810

URL: http://llvm.org/viewvc/llvm-project?rev=88810&view=rev
Log:
Handle CK_BitCast in EmitCastLValue.

Modified:
    cfe/trunk/lib/CodeGen/CGExpr.cpp
    cfe/trunk/test/CodeGenCXX/reinterpret-cast.cpp

Modified: cfe/trunk/lib/CodeGen/CGExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExpr.cpp?rev=88810&r1=88809&r2=88810&view=diff

==============================================================================
--- cfe/trunk/lib/CodeGen/CGExpr.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGExpr.cpp Sat Nov 14 15:21:42 2009
@@ -1302,7 +1302,7 @@
       if (ICE->isLvalueCast())
         return EmitLValue(E->getSubExpr());
     
-    assert(0 && "Unhandled cast!");
+    assert(false && "Unhandled cast!");
       
   case CastExpr::CK_NoOp:
   case CastExpr::CK_ConstructorConversion:
@@ -1327,13 +1327,22 @@
     
     return LValue::MakeAddr(Base, MakeQualifiers(E->getType()));
   }
-
   case CastExpr::CK_ToUnion: {
     llvm::Value *Temp = CreateTempAlloca(ConvertType(E->getType()));
     EmitAnyExpr(E->getSubExpr(), Temp, false);
 
     return LValue::MakeAddr(Temp, MakeQualifiers(E->getType()));
-    }
+  }
+  case CastExpr::CK_BitCast: {
+    // This must be a reinterpret_cast.
+    const CXXReinterpretCastExpr *CE = cast<CXXReinterpretCastExpr>(E);
+    
+    LValue LV = EmitLValue(E->getSubExpr());
+    llvm::Value *V = Builder.CreateBitCast(LV.getAddress(),
+                                           ConvertType(CE->getTypeAsWritten()));
+    return LValue::MakeAddr(V, MakeQualifiers(E->getType()));
+  }
+
   }
 }
 

Modified: cfe/trunk/test/CodeGenCXX/reinterpret-cast.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/reinterpret-cast.cpp?rev=88810&r1=88809&r2=88810&view=diff

==============================================================================
--- cfe/trunk/test/CodeGenCXX/reinterpret-cast.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/reinterpret-cast.cpp Sat Nov 14 15:21:42 2009
@@ -10,3 +10,8 @@
 unsigned long f3(void *p) {
   return reinterpret_cast<unsigned long>(p);
 }
+
+void f4(int*&);
+void f5(void*& u) {
+  f4(reinterpret_cast<int*&>(u));
+}
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