revert patch in r139020


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139029 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprComplex.cpp b/lib/CodeGen/CGExprComplex.cpp
index 24d0115..1a27d13 100644
--- a/lib/CodeGen/CGExprComplex.cpp
+++ b/lib/CodeGen/CGExprComplex.cpp
@@ -311,7 +311,11 @@
 //===----------------------------------------------------------------------===//
 
 ComplexPairTy ComplexExprEmitter::VisitExpr(Expr *E) {
-  return EmitLoadOfLValue(E);
+  CGF.ErrorUnsupported(E, "complex expression");
+  llvm::Type *EltTy =
+  CGF.ConvertType(E->getType()->getAs<ComplexType>()->getElementType());
+  llvm::Value *U = llvm::UndefValue::get(EltTy);
+  return ComplexPairTy(U, U);
 }
 
 ComplexPairTy ComplexExprEmitter::
diff --git a/test/CodeGen/capture-complex-expr-block.c b/test/CodeGen/capture-complex-expr-block.c
deleted file mode 100644
index 17d3cc5..0000000
--- a/test/CodeGen/capture-complex-expr-block.c
+++ /dev/null
@@ -1,19 +0,0 @@
-// RUN: %clang_cc1 %s -emit-llvm -o - -fblocks -triple x86_64-apple-darwin10 | FileCheck %s
-// rdar://10033986
-
-int main ()
-{
-    _Complex double c;
-    ^() {
-      _Complex double z;
-      z = z + c;
-    };
-    return 0;
-}
-
-// CHECK: define internal void @__main_block_invoke_0
-// CHECK:  [[C1:%.*]] = alloca { double, double }, align 8
-// CHECK:  [[C1]].realp = getelementptr inbounds { double, double }* [[C1]], i32 0, i32 0
-// CHECK-NEXT:  [[C1]].real = load double* [[C1]].realp
-// CHECK-NEXT:  [[C1]].imagp = getelementptr inbounds { double, double }* [[C1]], i32 0, i32 1
-// CHECK-NEXT:  [[C1]].imag = load double* [[C1]].imagp