Add support for complex compound assignments where the LHS is a scalar.

Fixes <rdar://problem/11224126> and PR12790.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183821 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/complex.c b/test/CodeGen/complex.c
index 1212660..e99a715 100644
--- a/test/CodeGen/complex.c
+++ b/test/CodeGen/complex.c
@@ -32,8 +32,7 @@
   double Gr = __real g1;
 
   cf += D;
-  // FIXME: Currently unsupported!
-  //D += cf;
+  D += cf;
   cf /= g1;
   g1 = g1 + D;
   g1 = D + g1;
@@ -51,8 +50,7 @@
   i = __real ci1;
 
   cs += i;
-  // FIXME: Currently unsupported!
-  //D += cf;
+  D += cf;
   cs /= ci1;
   ci1 = ci1 + i;
   ci1 = i + ci1;