--- /dev/null
+// RUN: %clang_cc1 -triple x86_64-unknown-windows -emit-llvm -o - %s | FileCheck %s
+
+#define SWIFTCALL __attribute__((swiftcall))
+#define OUT __attribute__((swift_indirect_result))
+#define ERROR __attribute__((swift_error_result))
+#define CONTEXT __attribute__((swift_context))
+
+// CHECK: [[STRUCT2_RESULT:@.*]] = private {{.*}} constant [[STRUCT2_TYPE:%.*]] { i32 0, i8 0, i8 undef, i8 0, float 0.000000e+00, float 0.000000e+00 }
+
+/*****************************************************************************/
+/****************************** PARAMETER ABIS *******************************/
+/*****************************************************************************/
+
+SWIFTCALL void indirect_result_1(OUT int *arg0, OUT float *arg1) {}
+// CHECK-LABEL: define {{.*}} void @indirect_result_1(i32* noalias sret align 4 dereferenceable(4){{.*}}, float* noalias align 4 dereferenceable(4){{.*}})
+
+// TODO: maybe this shouldn't suppress sret.
+SWIFTCALL int indirect_result_2(OUT int *arg0, OUT float *arg1) { __builtin_unreachable(); }
+// CHECK-LABEL: define {{.*}} i32 @indirect_result_2(i32* noalias align 4 dereferenceable(4){{.*}}, float* noalias align 4 dereferenceable(4){{.*}})
+
+typedef struct { char array[1024]; } struct_reallybig;
+SWIFTCALL struct_reallybig indirect_result_3(OUT int *arg0, OUT float *arg1) { __builtin_unreachable(); }
+// CHECK-LABEL: define {{.*}} void @indirect_result_3({{.*}}* noalias sret {{.*}}, i32* noalias align 4 dereferenceable(4){{.*}}, float* noalias align 4 dereferenceable(4){{.*}})
+
+SWIFTCALL void context_1(CONTEXT void *self) {}
+// CHECK-LABEL: define {{.*}} void @context_1(i8* swiftself
+
+SWIFTCALL void context_2(void *arg0, CONTEXT void *self) {}
+// CHECK-LABEL: define {{.*}} void @context_2(i8*{{.*}}, i8* swiftself
+
+SWIFTCALL void context_error_1(CONTEXT int *self, ERROR float **error) {}
+// CHECK-LABEL: define {{.*}} void @context_error_1(i32* swiftself{{.*}}, float** swifterror)
+// CHECK: [[TEMP:%.*]] = alloca float*, align 8
+// CHECK: [[T0:%.*]] = load float*, float** [[ERRORARG:%.*]], align 8
+// CHECK: store float* [[T0]], float** [[TEMP]], align 8
+// CHECK: [[T0:%.*]] = load float*, float** [[TEMP]], align 8
+// CHECK: store float* [[T0]], float** [[ERRORARG]], align 8
+void test_context_error_1() {
+ int x;
+ float *error;
+ context_error_1(&x, &error);
+}
+// CHECK-LABEL: define void @test_context_error_1()
+// CHECK: [[X:%.*]] = alloca i32, align 4
+// CHECK: [[ERROR:%.*]] = alloca float*, align 8
+// CHECK: [[TEMP:%.*]] = alloca swifterror float*, align 8
+// CHECK: [[T0:%.*]] = load float*, float** [[ERROR]], align 8
+// CHECK: store float* [[T0]], float** [[TEMP]], align 8
+// CHECK: call [[SWIFTCC:swiftcc]] void @context_error_1(i32* swiftself [[X]], float** swifterror [[TEMP]])
+// CHECK: [[T0:%.*]] = load float*, float** [[TEMP]], align 8
+// CHECK: store float* [[T0]], float** [[ERROR]], align 8
+
+SWIFTCALL void context_error_2(short s, CONTEXT int *self, ERROR float **error) {}
+// CHECK-LABEL: define {{.*}} void @context_error_2(i16{{.*}}, i32* swiftself{{.*}}, float** swifterror)
+
+/*****************************************************************************/
+/********************************** LOWERING *********************************/
+/*****************************************************************************/
+
+typedef float float4 __attribute__((ext_vector_type(4)));
+typedef float float8 __attribute__((ext_vector_type(8)));
+typedef double double2 __attribute__((ext_vector_type(2)));
+typedef double double4 __attribute__((ext_vector_type(4)));
+typedef int int3 __attribute__((ext_vector_type(3)));
+typedef int int4 __attribute__((ext_vector_type(4)));
+typedef int int5 __attribute__((ext_vector_type(5)));
+typedef int int8 __attribute__((ext_vector_type(8)));
+
+#define TEST(TYPE) \
+ SWIFTCALL TYPE return_##TYPE(void) { \
+ TYPE result = {}; \
+ return result; \
+ } \
+ SWIFTCALL void take_##TYPE(TYPE v) { \
+ } \
+ void test_##TYPE() { \
+ take_##TYPE(return_##TYPE()); \
+ }
+
+/*****************************************************************************/
+/*********************************** STRUCTS *********************************/
+/*****************************************************************************/
+
+typedef struct {
+} struct_empty;
+TEST(struct_empty);
+// CHECK-LABEL: define {{.*}} @return_struct_empty()
+// CHECK: ret void
+// CHECK-LABEL: define {{.*}} @take_struct_empty()
+// CHECK: ret void
+
+typedef struct {
+ int x;
+ char c0;
+ char c1;
+ float f0;
+ float f1;
+} struct_1;
+TEST(struct_1);
+// CHECK-LABEL: define swiftcc { i64, i64 } @return_struct_1() {{.*}}{
+// CHECK: [[RET:%.*]] = alloca [[STRUCT1:%.*]], align 4
+// CHECK: [[VAR:%.*]] = alloca [[STRUCT1]], align 4
+// CHECK: call void @llvm.memset
+// CHECK: call void @llvm.memcpy
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT1]]* %retval to { i64, i64 }*
+// CHECK: [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[T0:%.*]] = load i64, i64* [[GEP0]], align 4
+// CHECK: [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[T1:%.*]] = load i64, i64* [[GEP1]], align 4
+// CHECK: [[R0:%.*]] = insertvalue { i64, i64 } undef, i64 [[T0]], 0
+// CHECK: [[R1:%.*]] = insertvalue { i64, i64 } [[R0]], i64 [[T1]], 1
+// CHECK: ret { i64, i64 } [[R1]]
+// CHECK: }
+// CHECK-LABEL: define swiftcc void @take_struct_1(i64, i64) {{.*}}{
+// CHECK: [[V:%.*]] = alloca [[STRUCT1:%.*]], align 4
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT1]]* [[V]] to { i64, i64 }*
+// CHECK: [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: store i64 %0, i64* [[GEP0]], align 4
+// CHECK: [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: store i64 %1, i64* [[GEP1]], align 4
+// CHECK: ret void
+// CHECK: }
+// CHECK-LABEL: define void @test_struct_1() {{.*}}{
+// CHECK: entry:
+// CHECK: [[AGG:%.*]] = alloca [[STRUCT1:%.*]], align 4
+// CHECK: [[RET:%.*]] = call swiftcc { i64, i64 } @return_struct_1()
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT1]]* [[AGG]] to { i64, i64 }*
+// CHECK: [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[E0:%.*]] = extractvalue { i64, i64 } [[RET]], 0
+// CHECK: store i64 [[E0]], i64* [[GEP0]], align 4
+// CHECK: [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[E1:%.*]] = extractvalue { i64, i64 } [[RET]], 1
+// CHECK: store i64 [[E1]], i64* [[GEP1]], align 4
+// CHECK: [[CAST2:%.*]] = bitcast [[STRUCT1]]* [[AGG]] to { i64, i64 }*
+// CHECK: [[GEP2:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST2]], i32 0, i32 0
+// CHECK: [[V0:%.*]] = load i64, i64* [[GEP2]], align 4
+// CHECK: [[GEP3:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST2]], i32 0, i32 1
+// CHECK: [[V1:%.*]] = load i64, i64* [[GEP3]], align 4
+// CHECK: call swiftcc void @take_struct_1(i64 [[V0]], i64 [[V1]])
+// CHECK: ret void
+// CHECK: }
+
+typedef struct {
+ int x;
+ char c0;
+ __attribute__((aligned(2))) char c1;
+ float f0;
+ float f1;
+} struct_2;
+TEST(struct_2);
+// CHECK-LABEL: define swiftcc { i64, i64 } @return_struct_2() {{.*}}{
+// CHECK: [[RET:%.*]] = alloca [[STRUCT2_TYPE]], align 4
+// CHECK: [[VAR:%.*]] = alloca [[STRUCT2_TYPE]], align 4
+// CHECK: [[CASTVAR:%.*]] = bitcast {{.*}} [[VAR]]
+// CHECK: call void @llvm.memcpy{{.*}}({{.*}}[[CASTVAR]], {{.*}}[[STRUCT2_RESULT]]
+// CHECK: [[CASTRET:%.*]] = bitcast {{.*}} [[RET]]
+// CHECK: [[CASTVAR:%.*]] = bitcast {{.*}} [[VAR]]
+// CHECK: call void @llvm.memcpy{{.*}}({{.*}}[[CASTRET]], {{.*}}[[CASTVAR]]
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT2_TYPE]]* [[RET]] to { i64, i64 }*
+// CHECK: [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[T0:%.*]] = load i64, i64* [[GEP0]], align 4
+// CHECK: [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[T1:%.*]] = load i64, i64* [[GEP1]], align 4
+// CHECK: [[R0:%.*]] = insertvalue { i64, i64 } undef, i64 [[T0]], 0
+// CHECK: [[R1:%.*]] = insertvalue { i64, i64 } [[R0]], i64 [[T1]], 1
+// CHECK: ret { i64, i64 } [[R1]]
+// CHECK: }
+// CHECK-LABEL: define swiftcc void @take_struct_2(i64, i64) {{.*}}{
+// CHECK: [[V:%.*]] = alloca [[STRUCT:%.*]], align 4
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT]]* [[V]] to { i64, i64 }*
+// CHECK: [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: store i64 %0, i64* [[GEP0]], align 4
+// CHECK: [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: store i64 %1, i64* [[GEP1]], align 4
+// CHECK: ret void
+// CHECK: }
+// CHECK-LABEL: define void @test_struct_2() {{.*}} {
+// CHECK: [[TMP:%.*]] = alloca [[STRUCT2_TYPE]], align 4
+// CHECK: [[CALL:%.*]] = call swiftcc { i64, i64 } @return_struct_2()
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[STRUCT2_TYPE]]* [[TMP]] to { i64, i64 }*
+// CHECK: [[GEP:%.*]] = getelementptr inbounds {{.*}} [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[T0:%.*]] = extractvalue { i64, i64 } [[CALL]], 0
+// CHECK: store i64 [[T0]], i64* [[GEP]], align 4
+// CHECK: [[GEP:%.*]] = getelementptr inbounds {{.*}} [[CAST_TMP]], i32 0, i32 1
+// CHECK: [[T0:%.*]] = extractvalue { i64, i64 } [[CALL]], 1
+// CHECK: store i64 [[T0]], i64* [[GEP]], align 4
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT2_TYPE]]* [[TMP]] to { i64, i64 }*
+// CHECK: [[GEP:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[R0:%.*]] = load i64, i64* [[GEP]], align 4
+// CHECK: [[GEP:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[R1:%.*]] = load i64, i64* [[GEP]], align 4
+// CHECK: call swiftcc void @take_struct_2(i64 [[R0]], i64 [[R1]])
+// CHECK: ret void
+// CHECK: }
+
+// There's no way to put a field randomly in the middle of an otherwise
+// empty storage unit in C, so that case has to be tested in C++, which
+// can use empty structs to introduce arbitrary padding. (In C, they end up
+// with size 0 and so don't affect layout.)
+
+// Misaligned data rule.
+typedef struct {
+ char c0;
+ __attribute__((packed)) float f;
+} struct_misaligned_1;
+TEST(struct_misaligned_1)
+// CHECK-LABEL: define swiftcc i64 @return_struct_misaligned_1()
+// CHECK: [[RET:%.*]] = alloca [[STRUCT:%.*]], align 1
+// CHECK: [[RES:%.*]] = alloca [[STRUCT]], align 1
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT]]* [[RES]] to i8*
+// CHECK: call void @llvm.memset{{.*}}(i8* [[CAST]], i8 0, i64 5
+// CHECK: [[CASTRET:%.*]] = bitcast [[STRUCT]]* [[RET]] to i8*
+// CHECK: [[CASTRES:%.*]] = bitcast [[STRUCT]]* [[RES]] to i8*
+// CHECK: call void @llvm.memcpy{{.*}}(i8* [[CASTRET]], i8* [[CASTRES]], i64 5
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT]]* [[RET]] to { i64 }*
+// CHECK: [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[R0:%.*]] = load i64, i64* [[GEP]], align 1
+// CHECK: ret i64 [[R0]]
+// CHECK:}
+// CHECK-LABEL: define swiftcc void @take_struct_misaligned_1(i64) {{.*}}{
+// CHECK: [[V:%.*]] = alloca [[STRUCT:%.*]], align 1
+// CHECK: [[CAST:%.*]] = bitcast [[STRUCT]]* [[V]] to { i64 }*
+// CHECK: [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
+// CHECK: store i64 %0, i64* [[GEP]], align 1
+// CHECK: ret void
+// CHECK: }
+// CHECK: define void @test_struct_misaligned_1() {{.*}}{
+// CHECK: [[AGG:%.*]] = alloca [[STRUCT:%.*]], align 1
+// CHECK: [[CALL:%.*]] = call swiftcc i64 @return_struct_misaligned_1()
+// CHECK: [[T0:%.*]] = bitcast [[STRUCT]]* [[AGG]] to { i64 }*
+// CHECK: [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
+// CHECK: store i64 [[CALL]], i64* [[T1]], align 1
+// CHECK: [[T0:%.*]] = bitcast [[STRUCT]]* [[AGG]] to { i64 }*
+// CHECK: [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
+// CHECK: [[P:%.*]] = load i64, i64* [[T1]], align 1
+// CHECK: call swiftcc void @take_struct_misaligned_1(i64 [[P]])
+// CHECK: ret void
+// CHECK: }
+
+// Too many scalars.
+typedef struct {
+ long long x[5];
+} struct_big_1;
+TEST(struct_big_1)
+
+// CHECK-LABEL: define {{.*}} void @return_struct_big_1({{.*}} noalias sret
+
+// Should not be byval.
+// CHECK-LABEL: define {{.*}} void @take_struct_big_1({{.*}}*{{( %.*)?}})
+
+/*****************************************************************************/
+/********************************* TYPE MERGING ******************************/
+/*****************************************************************************/
+
+typedef union {
+ float f;
+ double d;
+} union_het_fp;
+TEST(union_het_fp)
+// CHECK-LABEL: define swiftcc i64 @return_union_het_fp()
+// CHECK: [[RET:%.*]] = alloca [[UNION:%.*]], align 8
+// CHECK: [[RES:%.*]] = alloca [[UNION]], align 8
+// CHECK: [[CAST:%.*]] = bitcast [[UNION]]* [[RES]] to i8*
+// CHECK: call void @llvm.memcpy{{.*}}(i8* [[CAST]]
+// CHECK: [[CASTRET:%.*]] = bitcast [[UNION]]* [[RET]] to i8*
+// CHECK: [[CASTRES:%.*]] = bitcast [[UNION]]* [[RES]] to i8*
+// CHECK: call void @llvm.memcpy{{.*}}(i8* [[CASTRET]], i8* [[CASTRES]]
+// CHECK: [[CAST:%.*]] = bitcast [[UNION]]* [[RET]] to { i64 }*
+// CHECK: [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[R0:%.*]] = load i64, i64* [[GEP]], align 8
+// CHECK: ret i64 [[R0]]
+// CHECK-LABEL: define swiftcc void @take_union_het_fp(i64) {{.*}}{
+// CHECK: [[V:%.*]] = alloca [[UNION:%.*]], align 8
+// CHECK: [[CAST:%.*]] = bitcast [[UNION]]* [[V]] to { i64 }*
+// CHECK: [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
+// CHECK: store i64 %0, i64* [[GEP]], align 8
+// CHECK: ret void
+// CHECK: }
+// CHECK-LABEL: define void @test_union_het_fp() {{.*}}{
+// CHECK: [[AGG:%.*]] = alloca [[UNION:%.*]], align 8
+// CHECK: [[CALL:%.*]] = call swiftcc i64 @return_union_het_fp()
+// CHECK: [[T0:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64 }*
+// CHECK: [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
+// CHECK: store i64 [[CALL]], i64* [[T1]], align 8
+// CHECK: [[T0:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64 }*
+// CHECK: [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
+// CHECK: [[V0:%.*]] = load i64, i64* [[T1]], align 8
+// CHECK: call swiftcc void @take_union_het_fp(i64 [[V0]])
+// CHECK: ret void
+// CHECK: }
+
+
+typedef union {
+ float f1;
+ float f2;
+} union_hom_fp;
+TEST(union_hom_fp)
+// CHECK-LABEL: define void @test_union_hom_fp()
+// CHECK: [[TMP:%.*]] = alloca [[REC:%.*]], align 4
+// CHECK: [[CALL:%.*]] = call [[SWIFTCC]] float @return_union_hom_fp()
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP]] to [[AGG:{ float }]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: store float [[CALL]], float* [[T0]], align 4
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP]] to [[AGG]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[FIRST:%.*]] = load float, float* [[T0]], align 4
+// CHECK: call [[SWIFTCC]] void @take_union_hom_fp(float [[FIRST]])
+// CHECK: ret void
+
+typedef union {
+ float f1;
+ float4 fv2;
+} union_hom_fp_partial;
+TEST(union_hom_fp_partial)
+// CHECK: define void @test_union_hom_fp_partial()
+// CHECK: [[AGG:%.*]] = alloca [[UNION:%.*]], align 16
+// CHECK: [[CALL:%.*]] = call swiftcc { i64, i64 } @return_union_hom_fp_partial()
+// CHECK: [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64, i64 }*
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[T1:%.*]] = extractvalue { i64, i64 } [[CALL]], 0
+// CHECK: store i64 [[T1]], i64* [[T0]], align 16
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[T1:%.*]] = extractvalue { i64, i64 } [[CALL]], 1
+// CHECK: store i64 [[T1]], i64* [[T0]], align 8
+// CHECK: [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64, i64 }*
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[V0:%.*]] = load i64, i64* [[T0]], align 16
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[V1:%.*]] = load i64, i64* [[T0]], align 8
+// CHECK: call swiftcc void @take_union_hom_fp_partial(i64 [[V0]], i64 [[V1]])
+// CHECK: ret void
+// CHECK: }
+
+typedef union {
+ struct { int x, y; } f1;
+ float4 fv2;
+} union_het_fpv_partial;
+TEST(union_het_fpv_partial)
+// CHECK-LABEL: define void @test_union_het_fpv_partial()
+// CHECK: [[AGG:%.*]] = alloca [[UNION:%.*]], align 16
+// CHECK: [[CALL:%.*]] = call swiftcc { i64, i64 } @return_union_het_fpv_partial()
+// CHECK: [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64, i64 }*
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[T1:%.*]] = extractvalue { i64, i64 } [[CALL]], 0
+// CHECK: store i64 [[T1]], i64* [[T0]], align 16
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[T1:%.*]] = extractvalue { i64, i64 } [[CALL]], 1
+// CHECK: store i64 [[T1]], i64* [[T0]], align 8
+// CHECK: [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64, i64 }*
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
+// CHECK: [[V0:%.*]] = load i64, i64* [[T0]], align 16
+// CHECK: [[T0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
+// CHECK: [[V1:%.*]] = load i64, i64* [[T0]], align 8
+// CHECK: call swiftcc void @take_union_het_fpv_partial(i64 [[V0]], i64 [[V1]])
+// CHECK: ret void
+// CHECK: }
+
+/*****************************************************************************/
+/****************************** VECTOR LEGALIZATION **************************/
+/*****************************************************************************/
+
+TEST(int4)
+// CHECK-LABEL: define {{.*}} <4 x i32> @return_int4()
+// CHECK-LABEL: define {{.*}} @take_int4(<4 x i32>
+
+TEST(int8)
+// CHECK-LABEL: define {{.*}} @return_int8()
+// CHECK: [[RET:%.*]] = alloca [[REC:<8 x i32>]], align 32
+// CHECK: [[VAR:%.*]] = alloca [[REC]], align
+// CHECK: store
+// CHECK: load
+// CHECK: store
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[RET]] to [[AGG:{ <4 x i32>, <4 x i32> }]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: [[SECOND:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = insertvalue [[UAGG:{ <4 x i32>, <4 x i32> }]] undef, <4 x i32> [[FIRST]], 0
+// CHECK: [[T1:%.*]] = insertvalue [[UAGG]] [[T0]], <4 x i32> [[SECOND]], 1
+// CHECK: ret [[UAGG]] [[T1]]
+// CHECK-LABEL: define {{.*}} @take_int8(<4 x i32>, <4 x i32>)
+// CHECK: [[V:%.*]] = alloca [[REC]], align
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[V]] to [[AGG]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: store <4 x i32> %0, <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: store <4 x i32> %1, <4 x i32>* [[T0]], align
+// CHECK: ret void
+// CHECK-LABEL: define void @test_int8()
+// CHECK: [[TMP1:%.*]] = alloca [[REC]], align
+// CHECK: [[TMP2:%.*]] = alloca [[REC]], align
+// CHECK: [[CALL:%.*]] = call [[SWIFTCC]] [[UAGG]] @return_int8()
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP1]] to [[AGG]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 0
+// CHECK: store <4 x i32> [[T1]], <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 1
+// CHECK: store <4 x i32> [[T1]], <4 x i32>* [[T0]], align
+// CHECK: [[V:%.*]] = load [[REC]], [[REC]]* [[TMP1]], align
+// CHECK: store [[REC]] [[V]], [[REC]]* [[TMP2]], align
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP2]] to [[AGG]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: [[SECOND:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
+// CHECK: call [[SWIFTCC]] void @take_int8(<4 x i32> [[FIRST]], <4 x i32> [[SECOND]])
+// CHECK: ret void
+
+TEST(int5)
+// CHECK-LABEL: define {{.*}} @return_int5()
+// CHECK: [[RET:%.*]] = alloca [[REC:<5 x i32>]], align 32
+// CHECK: [[VAR:%.*]] = alloca [[REC]], align
+// CHECK: store
+// CHECK: load
+// CHECK: store
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[RET]] to [[AGG:{ <4 x i32>, i32 }]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: [[SECOND:%.*]] = load i32, i32* [[T0]], align
+// CHECK: [[T0:%.*]] = insertvalue [[UAGG:{ <4 x i32>, i32 }]] undef, <4 x i32> [[FIRST]], 0
+// CHECK: [[T1:%.*]] = insertvalue [[UAGG]] [[T0]], i32 [[SECOND]], 1
+// CHECK: ret [[UAGG]] [[T1]]
+// CHECK-LABEL: define {{.*}} @take_int5(<4 x i32>, i32)
+// CHECK: [[V:%.*]] = alloca [[REC]], align
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[V]] to [[AGG]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: store <4 x i32> %0, <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: store i32 %1, i32* [[T0]], align
+// CHECK: ret void
+// CHECK-LABEL: define void @test_int5()
+// CHECK: [[TMP1:%.*]] = alloca [[REC]], align
+// CHECK: [[TMP2:%.*]] = alloca [[REC]], align
+// CHECK: [[CALL:%.*]] = call [[SWIFTCC]] [[UAGG]] @return_int5()
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP1]] to [[AGG]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 0
+// CHECK: store <4 x i32> [[T1]], <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 1
+// CHECK: store i32 [[T1]], i32* [[T0]], align
+// CHECK: [[V:%.*]] = load [[REC]], [[REC]]* [[TMP1]], align
+// CHECK: store [[REC]] [[V]], [[REC]]* [[TMP2]], align
+// CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP2]] to [[AGG]]*
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
+// CHECK: [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
+// CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
+// CHECK: [[SECOND:%.*]] = load i32, i32* [[T0]], align
+// CHECK: call [[SWIFTCC]] void @take_int5(<4 x i32> [[FIRST]], i32 [[SECOND]])
+// CHECK: ret void
+
+typedef struct {
+ int x;
+ int3 v __attribute__((packed));
+} misaligned_int3;
+TEST(misaligned_int3)
+// CHECK-LABEL: define swiftcc void @take_misaligned_int3(i64, i64)