From: Arnold Schwaighofer <aschwaighofer@apple.com>
Date: Thu, 13 Oct 2016 17:17:36 +0000 (+0000)
Subject: Add more 64bit swiftcall convention tests
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=13dc212ffaeed7befe1f89b9e6831fbef73b0a33;p=clang

Add more 64bit swiftcall convention tests

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@284133 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/CodeGen/64bit-swiftcall.c b/test/CodeGen/64bit-swiftcall.c
new file mode 100644
index 0000000000..f5e63fe4d8
--- /dev/null
+++ b/test/CodeGen/64bit-swiftcall.c
@@ -0,0 +1,696 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -target-cpu core2 -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple arm64-apple-ios9 -target-cpu cyclone -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:   [[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 16
+// 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 16
+// 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)
+
+typedef struct {
+  float f0;
+} struct_f1;
+TEST(struct_f1)
+// CHECK-LABEL: define swiftcc float @return_struct_f1()
+// CHECK-LABEL: define swiftcc void @take_struct_f1(float)
+
+typedef struct {
+  float f0;
+  float f1;
+} struct_f2;
+TEST(struct_f2)
+// CHECK-LABEL: define swiftcc i64 @return_struct_f2()
+// CHECK-LABEL: define swiftcc void @take_struct_f2(i64)
+
+typedef struct {
+  float f0;
+  float f1;
+  float f2;
+} struct_f3;
+TEST(struct_f3)
+// CHECK-LABEL: define swiftcc { i64, float } @return_struct_f3()
+// CHECK-LABEL: define swiftcc void @take_struct_f3(i64, float)
+
+typedef struct {
+  float f0;
+  float f1;
+  float f2;
+  float f3;
+} struct_f4;
+TEST(struct_f4)
+// CHECK-LABEL: define swiftcc { i64, i64 } @return_struct_f4()
+// CHECK-LABEL: define swiftcc void @take_struct_f4(i64, i64)
+
+
+typedef struct {
+  double d0;
+} struct_d1;
+TEST(struct_d1)
+// CHECK-LABEL: define swiftcc double @return_struct_d1()
+// CHECK-LABEL: define swiftcc void @take_struct_d1(double)
+
+typedef struct {
+  double d0;
+  double d1;
+} struct_d2;
+TEST(struct_d2)
+// CHECK-LABEL: define swiftcc { double, double } @return_struct_d2()
+// CHECK-LABEL: define swiftcc void @take_struct_d2(double, double)
+
+typedef struct {
+  char c0;
+} struct_c1;
+TEST(struct_c1)
+// CHECK-LABEL: define swiftcc i8 @return_struct_c1()
+// CHECK-LABEL: define swiftcc void @take_struct_c1(i8)
+
+typedef struct {
+  char c0;
+  char c1;
+} struct_c2;
+TEST(struct_c2)
+// CHECK-LABEL: define swiftcc i16 @return_struct_c2()
+// CHECK-LABEL: define swiftcc void @take_struct_c2(i16)
+//
+
+typedef struct {
+  char c0;
+  char c1;
+  char c2;
+} struct_c3;
+TEST(struct_c3)
+// CHECK-LABEL: define swiftcc i32 @return_struct_c3()
+// CHECK-LABEL: define swiftcc void @take_struct_c3(i32)
+
+typedef struct {
+  char c0;
+  char c1;
+  char c2;
+  char c3;
+} struct_c4;
+TEST(struct_c4)
+// CHECK-LABEL: define swiftcc i32 @return_struct_c4()
+// CHECK-LABEL: define swiftcc void @take_struct_c4(i32)
+
+typedef struct {
+  char c0;
+  char c1;
+  char c2;
+  char c3;
+  char c4;
+} struct_c5;
+TEST(struct_c5)
+// CHECK-LABEL: define swiftcc i64 @return_struct_c5()
+// CHECK-LABEL: define swiftcc void @take_struct_c5(i64)
+//
+typedef struct {
+  char c0;
+  char c1;
+  char c2;
+  char c3;
+  char c4;
+  char c5;
+  char c6;
+  char c7;
+  char c8;
+} struct_c9;
+TEST(struct_c9)
+// CHECK-LABEL: define swiftcc { i64, i8 } @return_struct_c9()
+// CHECK-LABEL: define swiftcc void @take_struct_c9(i64, i8)
+
+typedef struct {
+  short s0;
+} struct_s1;
+TEST(struct_s1)
+// CHECK-LABEL: define swiftcc i16 @return_struct_s1()
+// CHECK-LABEL: define swiftcc void @take_struct_s1(i16)
+
+typedef struct {
+  short s0;
+  short s1;
+} struct_s2;
+TEST(struct_s2)
+// CHECK-LABEL: define swiftcc i32 @return_struct_s2()
+// CHECK-LABEL: define swiftcc void @take_struct_s2(i32)
+//
+
+typedef struct {
+  short s0;
+  short s1;
+  short s2;
+} struct_s3;
+TEST(struct_s3)
+// CHECK-LABEL: define swiftcc i64 @return_struct_s3()
+// CHECK-LABEL: define swiftcc void @take_struct_s3(i64)
+
+typedef struct {
+  short s0;
+  short s1;
+  short s2;
+  short s3;
+} struct_s4;
+TEST(struct_s4)
+// CHECK-LABEL: define swiftcc i64 @return_struct_s4()
+// CHECK-LABEL: define swiftcc void @take_struct_s4(i64)
+
+typedef struct {
+  short s0;
+  short s1;
+  short s2;
+  short s3;
+  short s4;
+} struct_s5;
+TEST(struct_s5)
+// CHECK-LABEL: define swiftcc { i64, i16 } @return_struct_s5()
+// CHECK-LABEL: define swiftcc void @take_struct_s5(i64, i16)
+
+
+typedef struct {
+  int i0;
+} struct_i1;
+TEST(struct_i1)
+// CHECK-LABEL: define swiftcc i32 @return_struct_i1()
+// CHECK-LABEL: define swiftcc void @take_struct_i1(i32)
+
+typedef struct {
+  int i0;
+  int i1;
+} struct_i2;
+TEST(struct_i2)
+// CHECK-LABEL: define swiftcc i64 @return_struct_i2()
+// CHECK-LABEL: define swiftcc void @take_struct_i2(i64)
+
+typedef struct {
+  int i0;
+  int i1;
+  int i2;
+} struct_i3;
+TEST(struct_i3)
+// CHECK-LABEL: define swiftcc { i64, i32 } @return_struct_i3()
+// CHECK-LABEL: define swiftcc void @take_struct_i3(i64, i32)
+
+typedef struct {
+  int i0;
+  int i1;
+  int i2;
+  int i3;
+} struct_i4;
+TEST(struct_i4)
+// CHECK-LABEL: define swiftcc { i64, i64 } @return_struct_i4()
+// CHECK-LABEL: define swiftcc void @take_struct_i4(i64, i64)
+
+typedef struct {
+  long long l0;
+} struct_l1;
+TEST(struct_l1)
+// CHECK-LABEL: define swiftcc i64 @return_struct_l1()
+// CHECK-LABEL: define swiftcc void @take_struct_l1(i64)
+
+typedef struct {
+  long long l0;
+  long long l1;
+} struct_l2;
+TEST(struct_l2)
+// CHECK-LABEL: define swiftcc { i64, i64 } @return_struct_l2()
+// CHECK-LABEL: define swiftcc void @take_struct_l2(i64, i64)
+
+typedef struct {
+  long long l0;
+  long long l1;
+  long long l2;
+} struct_l3;
+TEST(struct_l3)
+// CHECK-LABEL: define swiftcc { i64, i64, i64 } @return_struct_l3()
+// CHECK-LABEL: define swiftcc void @take_struct_l3(i64, i64, i64)
+
+typedef struct {
+  long long l0;
+  long long l1;
+  long long l2;
+  long long l3;
+} struct_l4;
+TEST(struct_l4)
+// CHECK-LABEL: define swiftcc { i64, i64, i64, i64 } @return_struct_l4()
+// CHECK-LABEL: define swiftcc void @take_struct_l4(i64, i64, i64, i64)
+
+typedef struct {
+  long long l0;
+  long long l1;
+  long long l2;
+  long long l3;
+  long long l4;
+} struct_l5;
+TEST(struct_l5)
+// CHECK: define swiftcc void @return_struct_l5([[STRUCT5:%.*]]* noalias sret
+// CHECK: define swiftcc void @take_struct_l5([[STRUCT5]]*