Add "long double" to permitted list of ARM complex homogeneous aggregates.

Under AAPCS, long double is the same as double, which means it should be
allowed as part of a homogeneous aggregate.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160586 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/TargetInfo.cpp

@@ -2623,7 +2623,8 @@ static bool isHomogeneousAggregate(QualType Ty, const Type *&Base,
     // double, or 64-bit or 128-bit vectors.
     if (const BuiltinType *BT = Ty->getAs<BuiltinType>()) {
       if (BT->getKind() != BuiltinType::Float && 
-          BT->getKind() != BuiltinType::Double)
+          BT->getKind() != BuiltinType::Double &&
+          BT->getKind() != BuiltinType::LongDouble)
         return false;
     } else if (const VectorType *VT = Ty->getAs<VectorType>()) {
       unsigned VecSize = Context.getTypeSize(VT);

test/CodeGen/arm-aapcs-vfp.c

@@ -34,6 +34,13 @@ void test_complex(__complex__ double cd) {
   complex_callee(cd);
 }
 
+// Long double is the same as double on AAPCS, it should be homogeneous.
+extern void complex_long_callee(__complex__ long double);
+// CHECK: define arm_aapcs_vfpcc void @test_complex_long(double %{{.*}}, double %{{.*}})
+void test_complex_long(__complex__ long double cd) {
+  complex_callee(cd);
+}
+
 // Structs with more than 4 elements of the base type are not treated
 // as homogeneous aggregates.  Test that.