Delete dead code.

llvm-svn: 185119

2 files changed, 16 insertions, 40 deletions

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index cbad66c8bc8..83989697ad4 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -821,8 +821,6 @@ LValue CodeGenFunction::EmitLValue(const Expr *E) {
     return EmitLValue(cleanups->getSubExpr());
   }
 
-  case Expr::CXXScalarValueInitExprClass:
-    return EmitNullInitializationLValue(cast<CXXScalarValueInitExpr>(E));
   case Expr::CXXDefaultArgExprClass:
     return EmitLValue(cast<CXXDefaultArgExpr>(E)->getExpr());
   case Expr::CXXDefaultInitExprClass: {
@@ -2676,26 +2674,6 @@ EmitConditionalOperatorLValue(const AbstractConditionalOperator *expr) {
 LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
   switch (E->getCastKind()) {
   case CK_ToVoid:
-    return EmitUnsupportedLValue(E, "unexpected cast lvalue");
-
-  case CK_Dependent:
-    llvm_unreachable("dependent cast kind in IR gen!");
-
-  case CK_BuiltinFnToFnPtr:
-    llvm_unreachable("builtin functions are handled elsewhere");
-
-  // These two casts are currently treated as no-ops, although they could
-  // potentially be real operations depending on the target's ABI.
-  case CK_NonAtomicToAtomic:
-  case CK_AtomicToNonAtomic:
-
-  case CK_NoOp:
-  case CK_LValueToRValue:
-    if (!E->getSubExpr()->Classify(getContext()).isPRValue() 
-        || E->getType()->isRecordType())
-      return EmitLValue(E->getSubExpr());
-    // Fall through to synthesize a temporary.
-
   case CK_BitCast:
   case CK_ArrayToPointerDecay:
   case CK_FunctionToPointerDecay:
@@ -2730,15 +2708,20 @@ LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
   case CK_ARCExtendBlockObject: 
-  case CK_CopyAndAutoreleaseBlockObject: {
-    // These casts only produce lvalues when we're binding a reference to a 
-    // temporary realized from a (converted) pure rvalue. Emit the expression
-    // as a value, copy it into a temporary, and return an lvalue referring to
-    // that temporary.
-    llvm::Value *V = CreateMemTemp(E->getType(), "ref.temp");
-    EmitAnyExprToMem(E, V, E->getType().getQualifiers(), false);
-    return MakeAddrLValue(V, E->getType());
-  }
+  case CK_CopyAndAutoreleaseBlockObject:
+    return EmitUnsupportedLValue(E, "unexpected cast lvalue");
+
+  case CK_Dependent:
+    llvm_unreachable("dependent cast kind in IR gen!");
+
+  case CK_BuiltinFnToFnPtr:
+    llvm_unreachable("builtin functions are handled elsewhere");
+
+  // These two casts are currently treated as no-ops, although they could
+  // potentially be real operations depending on the target's ABI.
+  case CK_NonAtomicToAtomic:
+  case CK_AtomicToNonAtomic:
+    return EmitLValue(E->getSubExpr());
 
   case CK_Dynamic: {
     LValue LV = EmitLValue(E->getSubExpr());
@@ -2751,6 +2734,8 @@ LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
   case CK_UserDefinedConversion:
   case CK_CPointerToObjCPointerCast:
   case CK_BlockPointerToObjCPointerCast:
+  case CK_NoOp:
+  case CK_LValueToRValue:
     return EmitLValue(E->getSubExpr());
   
   case CK_UncheckedDerivedToBase:
@@ -2817,14 +2802,6 @@ LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
   llvm_unreachable("Unhandled lvalue cast kind?");
 }
 
-LValue CodeGenFunction::EmitNullInitializationLValue(
-                                              const CXXScalarValueInitExpr *E) {
-  QualType Ty = E->getType();
-  LValue LV = MakeAddrLValue(CreateMemTemp(Ty), Ty);
-  EmitNullInitialization(LV.getAddress(), Ty);
-  return LV;
-}
-
 LValue CodeGenFunction::EmitOpaqueValueLValue(const OpaqueValueExpr *e) {
   assert(OpaqueValueMappingData::shouldBindAsLValue(e));
   return getOpaqueLValueMapping(e);
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 7b18edf3215..8b6842defa8 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -1991,7 +1991,6 @@ public:
   LValue EmitInitListLValue(const InitListExpr *E);
   LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E);
   LValue EmitCastLValue(const CastExpr *E);
-  LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E);
   LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E);
   LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e);