clang/test/CodeGen/windows-swiftcall.c

   1 // RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-windows -emit-llvm -target-cpu core2 -o - %s | FileCheck %s
   2
   3 #define SWIFTCALL __attribute__((swiftcall))
   4 #define OUT __attribute__((swift_indirect_result))
   5 #define ERROR __attribute__((swift_error_result))
   6 #define CONTEXT __attribute__((swift_context))
   7
   8 // CHECK: [[STRUCT2_RESULT:@.*]] = private {{.*}} constant [[STRUCT2_TYPE:%.*]] { i32 0, i8 0, i8 undef, i8 0, i32 0, i32 0 }
   9
  10 /*****************************************************************************/
  11 /****************************** PARAMETER ABIS *******************************/
  12 /*****************************************************************************/
  13
  14 SWIFTCALL void indirect_result_1(OUT int *arg0, OUT float *arg1) {}
  15 // CHECK-LABEL: define {{.*}} void @indirect_result_1(i32* noalias noundef sret(i32*) align 4 dereferenceable(4){{.*}}, float* noalias noundef align 4 dereferenceable(4){{.*}})
  16
  17 // TODO: maybe this shouldn't suppress sret.
  18 SWIFTCALL int indirect_result_2(OUT int *arg0, OUT float *arg1) {  __builtin_unreachable(); }
  19 // CHECK-LABEL: define {{.*}} i32 @indirect_result_2(i32* noalias noundef align 4 dereferenceable(4){{.*}}, float* noalias noundef align 4 dereferenceable(4){{.*}})
  20
  21 typedef struct { char array[1024]; } struct_reallybig;
  22 SWIFTCALL struct_reallybig indirect_result_3(OUT int *arg0, OUT float *arg1) { __builtin_unreachable(); }
  23 // CHECK-LABEL: define {{.*}} void @indirect_result_3({{.*}}* noalias sret({{.*}}) {{.*}}, i32* noalias noundef align 4 dereferenceable(4){{.*}}, float* noalias noundef align 4 dereferenceable(4){{.*}})
  24
  25 SWIFTCALL void context_1(CONTEXT void *self) {}
  26 // CHECK-LABEL: define {{.*}} void @context_1(i8* noundef swiftself
  27
  28 SWIFTCALL void context_2(void *arg0, CONTEXT void *self) {}
  29 // CHECK-LABEL: define {{.*}} void @context_2(i8*{{.*}}, i8* noundef swiftself
  30
  31 SWIFTCALL void context_error_1(CONTEXT int *self, ERROR float **error) {}
  32 // CHECK-LABEL: define {{.*}} void @context_error_1(i32* noundef swiftself{{.*}}, float** noundef swifterror %0)
  33 // CHECK:       [[TEMP:%.*]] = alloca float*, align 8
  34 // CHECK:       [[T0:%.*]] = load float*, float** [[ERRORARG:%.*]], align 8
  35 // CHECK:       store float* [[T0]], float** [[TEMP]], align 8
  36 // CHECK:       [[T0:%.*]] = load float*, float** [[TEMP]], align 8
  37 // CHECK:       store float* [[T0]], float** [[ERRORARG]], align 8
  38 void test_context_error_1(void) {
  39   int x;
  40   float *error;
  41   context_error_1(&x, &error);
  42 }
  43 // CHECK-LABEL: define dso_local void @test_context_error_1()
  44 // CHECK:       [[X:%.*]] = alloca i32, align 4
  45 // CHECK:       [[ERROR:%.*]] = alloca float*, align 8
  46 // CHECK:       [[TEMP:%.*]] = alloca swifterror float*, align 8
  47 // CHECK:       [[T0:%.*]] = load float*, float** [[ERROR]], align 8
  48 // CHECK:       store float* [[T0]], float** [[TEMP]], align 8
  49 // CHECK:       call [[SWIFTCC:swiftcc]] void @context_error_1(i32* noundef swiftself [[X]], float** noundef swifterror [[TEMP]])
  50 // CHECK:       [[T0:%.*]] = load float*, float** [[TEMP]], align 8
  51 // CHECK:       store float* [[T0]], float** [[ERROR]], align 8
  52
  53 SWIFTCALL void context_error_2(short s, CONTEXT int *self, ERROR float **error) {}
  54 // CHECK-LABEL: define {{.*}} void @context_error_2(i16{{.*}}, i32* noundef swiftself{{.*}}, float** noundef swifterror %0)
  55
  56 /*****************************************************************************/
  57 /********************************** LOWERING *********************************/
  58 /*****************************************************************************/
  59
  60 typedef float float4 __attribute__((ext_vector_type(4)));
  61 typedef float float8 __attribute__((ext_vector_type(8)));
  62 typedef double double2 __attribute__((ext_vector_type(2)));
  63 typedef double double4 __attribute__((ext_vector_type(4)));
  64 typedef int int3 __attribute__((ext_vector_type(3)));
  65 typedef int int4 __attribute__((ext_vector_type(4)));
  66 typedef int int5 __attribute__((ext_vector_type(5)));
  67 typedef int int8 __attribute__((ext_vector_type(8)));
  68
  69 #define TEST(TYPE)                       \
  70   SWIFTCALL TYPE return_##TYPE(void) {   \
  71     TYPE result = {};                    \
  72     return result;                       \
  73   }                                      \
  74   SWIFTCALL void take_##TYPE(TYPE v) {   \
  75   }                                      \
  76   void test_##TYPE(void) {               \
  77     take_##TYPE(return_##TYPE());        \
  78   }
  79
  80 /*****************************************************************************/
  81 /*********************************** STRUCTS *********************************/
  82 /*****************************************************************************/
  83
  84 typedef struct {
  85 } struct_empty;
  86 TEST(struct_empty);
  87 // CHECK-LABEL: define {{.*}} @return_struct_empty()
  88 // CHECK:   ret void
  89 // CHECK-LABEL: define {{.*}} @take_struct_empty()
  90 // CHECK:   ret void
  91
  92 typedef struct {
  93   int x;
  94   char c0;
  95   char c1;
  96   int f0;
  97   int f1;
  98 } struct_1;
  99 TEST(struct_1);
 100 // CHECK-LABEL: define dso_local swiftcc { i64, i64 } @return_struct_1() {{.*}}{
 101 // CHECK:   [[RET:%.*]] = alloca [[STRUCT1:%.*]], align 4
 102 // CHECK:   call void @llvm.memset
 103 // CHECK:   [[CAST:%.*]] = bitcast [[STRUCT1]]* %retval to { i64, i64 }*
 104 // CHECK:   [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
 105 // CHECK:   [[T0:%.*]] = load i64, i64* [[GEP0]], align 4
 106 // CHECK:   [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
 107 // CHECK:   [[T1:%.*]] = load i64, i64* [[GEP1]], align 4
 108 // CHECK:   [[R0:%.*]] = insertvalue { i64, i64 } poison, i64 [[T0]], 0
 109 // CHECK:   [[R1:%.*]] = insertvalue { i64, i64 } [[R0]], i64 [[T1]], 1
 110 // CHECK:   ret { i64, i64 } [[R1]]
 111 // CHECK: }
 112 // CHECK-LABEL: define dso_local swiftcc void @take_struct_1(i64 %0, i64 %1) {{.*}}{
 113 // CHECK:   [[V:%.*]] = alloca [[STRUCT1:%.*]], align 4
 114 // CHECK:   [[CAST:%.*]] = bitcast [[STRUCT1]]* [[V]] to { i64, i64 }*
 115 // CHECK:   [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
 116 // CHECK:   store i64 %0, i64* [[GEP0]], align 4
 117 // CHECK:   [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
 118 // CHECK:   store i64 %1, i64* [[GEP1]], align 4
 119 // CHECK:   ret void
 120 // CHECK: }
 121 // CHECK-LABEL: define dso_local void @test_struct_1() {{.*}}{
 122 // CHECK:   [[AGG:%.*]] = alloca [[STRUCT1:%.*]], align 4
 123 // CHECK:   [[RET:%.*]] = call swiftcc { i64, i64 } @return_struct_1()
 124 // CHECK:   [[CAST:%.*]] = bitcast [[STRUCT1]]* [[AGG]] to { i64, i64 }*
 125 // CHECK:   [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
 126 // CHECK:   [[E0:%.*]] = extractvalue { i64, i64 } [[RET]], 0
 127 // CHECK:   store i64 [[E0]], i64* [[GEP0]], align 4
 128 // CHECK:   [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
 129 // CHECK:   [[E1:%.*]] = extractvalue { i64, i64 } [[RET]], 1
 130 // CHECK:   store i64 [[E1]], i64* [[GEP1]], align 4
 131 // CHECK:   [[CAST2:%.*]] = bitcast [[STRUCT1]]* [[AGG]] to { i64, i64 }*
 132 // CHECK:   [[GEP2:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST2]], i32 0, i32 0
 133 // CHECK:   [[V0:%.*]] = load i64, i64* [[GEP2]], align 4
 134 // CHECK:   [[GEP3:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST2]], i32 0, i32 1
 135 // CHECK:   [[V1:%.*]] = load i64, i64* [[GEP3]], align 4
 136 // CHECK:   call swiftcc void @take_struct_1(i64 [[V0]], i64 [[V1]])
 137 // CHECK:   ret void
 138 // CHECK: }
 139
 140 typedef struct {
 141   int x;
 142   char c0;
 143   __attribute__((aligned(2))) char c1;
 144   int f0;
 145   int f1;
 146 } struct_2;
 147 TEST(struct_2);
 148 // CHECK-LABEL: define dso_local swiftcc { i64, i64 } @return_struct_2() {{.*}}{
 149 // CHECK:   [[RET:%.*]] = alloca [[STRUCT2_TYPE]], align 4
 150 // CHECK:   [[CASTVAR:%.*]] = bitcast {{.*}} [[RET]]
 151 // CHECK:   call void @llvm.memcpy{{.*}}({{.*}}[[CASTVAR]], {{.*}}[[STRUCT2_RESULT]]
 152 // CHECK:   [[CAST:%.*]] = bitcast [[STRUCT2_TYPE]]* [[RET]] to { i64, i64 }*
 153 // CHECK:   [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
 154 // CHECK:   [[T0:%.*]] = load i64, i64* [[GEP0]], align 4
 155 // CHECK:   [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
 156 // CHECK:   [[T1:%.*]] = load i64, i64* [[GEP1]], align 4
 157 // CHECK:   [[R0:%.*]] = insertvalue { i64, i64 } poison, i64 [[T0]], 0
 158 // CHECK:   [[R1:%.*]] = insertvalue { i64, i64 } [[R0]], i64 [[T1]], 1
 159 // CHECK:   ret { i64, i64 } [[R1]]
 160 // CHECK: }
 161 // CHECK-LABEL: define dso_local swiftcc void @take_struct_2(i64 %0, i64 %1) {{.*}}{
 162 // CHECK:   [[V:%.*]] = alloca [[STRUCT:%.*]], align 4
 163 // CHECK:   [[CAST:%.*]] = bitcast [[STRUCT]]* [[V]] to { i64, i64 }*
 164 // CHECK:   [[GEP0:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
 165 // CHECK:   store i64 %0, i64* [[GEP0]], align 4
 166 // CHECK:   [[GEP1:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
 167 // CHECK:   store i64 %1, i64* [[GEP1]], align 4
 168 // CHECK:   ret void
 169 // CHECK: }
 170 // CHECK-LABEL: define dso_local void @test_struct_2() {{.*}} {
 171 // CHECK:   [[TMP:%.*]] = alloca [[STRUCT2_TYPE]], align 4
 172 // CHECK:   [[CALL:%.*]] = call swiftcc { i64, i64 } @return_struct_2()
 173 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[STRUCT2_TYPE]]* [[TMP]] to { i64, i64 }*
 174 // CHECK:   [[GEP:%.*]] = getelementptr inbounds {{.*}} [[CAST_TMP]], i32 0, i32 0
 175 // CHECK:   [[T0:%.*]] = extractvalue { i64, i64 } [[CALL]], 0
 176 // CHECK:   store i64 [[T0]], i64* [[GEP]], align 4
 177 // CHECK:   [[GEP:%.*]] = getelementptr inbounds {{.*}} [[CAST_TMP]], i32 0, i32 1
 178 // CHECK:   [[T0:%.*]] = extractvalue { i64, i64 } [[CALL]], 1
 179 // CHECK:   store i64 [[T0]], i64* [[GEP]], align 4
 180 // CHECK:   [[CAST:%.*]] = bitcast [[STRUCT2_TYPE]]* [[TMP]] to { i64, i64 }*
 181 // CHECK:   [[GEP:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 0
 182 // CHECK:   [[R0:%.*]] = load i64, i64* [[GEP]], align 4
 183 // CHECK:   [[GEP:%.*]] = getelementptr inbounds { i64, i64 }, { i64, i64 }* [[CAST]], i32 0, i32 1
 184 // CHECK:   [[R1:%.*]] = load i64, i64* [[GEP]], align 4
 185 // CHECK:   call swiftcc void @take_struct_2(i64 [[R0]], i64 [[R1]])
 186 // CHECK:   ret void
 187 // CHECK: }
 188
 189 // There's no way to put a field randomly in the middle of an otherwise
 190 // empty storage unit in C, so that case has to be tested in C++, which
 191 // can use empty structs to introduce arbitrary padding.  (In C, they end up
 192 // with size 0 and so don't affect layout.)
 193
 194 // Misaligned data rule.
 195 typedef struct {
 196   char c0;
 197   __attribute__((packed)) float f;
 198 } struct_misaligned_1;
 199 TEST(struct_misaligned_1)
 200 // CHECK-LABEL: define dso_local swiftcc i64 @return_struct_misaligned_1()
 201 // CHECK:  [[RET:%.*]] = alloca [[STRUCT:%.*]], align 1
 202 // CHECK:  [[CAST:%.*]] = bitcast [[STRUCT]]* [[RET]] to i8*
 203 // CHECK:  call void @llvm.memset{{.*}}(i8* align 1 [[CAST]], i8 0, i64 5
 204 // CHECK:  [[CAST:%.*]] = bitcast [[STRUCT]]* [[RET]] to { i64 }*
 205 // CHECK:  [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
 206 // CHECK:  [[R0:%.*]] = load i64, i64* [[GEP]], align 1
 207 // CHECK:  ret i64 [[R0]]
 208 // CHECK:}
 209 // CHECK-LABEL: define dso_local swiftcc void @take_struct_misaligned_1(i64 %0) {{.*}}{
 210 // CHECK:   [[V:%.*]] = alloca [[STRUCT:%.*]], align 1
 211 // CHECK:   [[CAST:%.*]] = bitcast [[STRUCT]]* [[V]] to { i64 }*
 212 // CHECK:   [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
 213 // CHECK:   store i64 %0, i64* [[GEP]], align 1
 214 // CHECK:   ret void
 215 // CHECK: }
 216 // CHECK: define dso_local void @test_struct_misaligned_1() {{.*}}{
 217 // CHECK:   [[AGG:%.*]] = alloca [[STRUCT:%.*]], align 1
 218 // CHECK:   [[CALL:%.*]] = call swiftcc i64 @return_struct_misaligned_1()
 219 // CHECK:   [[T0:%.*]] = bitcast [[STRUCT]]* [[AGG]] to { i64 }*
 220 // CHECK:   [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
 221 // CHECK:   store i64 [[CALL]], i64* [[T1]], align 1
 222 // CHECK:   [[T0:%.*]] = bitcast [[STRUCT]]* [[AGG]] to { i64 }*
 223 // CHECK:   [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
 224 // CHECK:   [[P:%.*]] = load i64, i64* [[T1]], align 1
 225 // CHECK:   call swiftcc void @take_struct_misaligned_1(i64 [[P]])
 226 // CHECK:   ret void
 227 // CHECK: }
 228
 229 // Too many scalars.
 230 typedef struct {
 231   long long x[5];
 232 } struct_big_1;
 233 TEST(struct_big_1)
 234
 235 // CHECK-LABEL: define {{.*}} void @return_struct_big_1({{.*}} noalias sret
 236
 237 // Should not be byval.
 238 // CHECK-LABEL: define {{.*}} void @take_struct_big_1({{.*}}* noundef{{( %.*)?}})
 239
 240 /*****************************************************************************/
 241 /********************************* TYPE MERGING ******************************/
 242 /*****************************************************************************/
 243
 244 typedef union {
 245   float f;
 246   double d;
 247 } union_het_fp;
 248 TEST(union_het_fp)
 249 // CHECK-LABEL: define dso_local swiftcc i64 @return_union_het_fp()
 250 // CHECK:  [[RET:%.*]] = alloca [[UNION:%.*]], align 8
 251 // CHECK:  [[CAST:%.*]] = bitcast [[UNION]]* [[RET]] to i8*
 252 // CHECK:  call void @llvm.memcpy{{.*}}(i8* align {{[0-9]+}} [[CAST]]
 253 // CHECK:  [[CAST:%.*]] = bitcast [[UNION]]* [[RET]] to { i64 }*
 254 // CHECK:  [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
 255 // CHECK:  [[R0:%.*]] = load i64, i64* [[GEP]], align 8
 256 // CHECK:  ret i64 [[R0]]
 257 // CHECK-LABEL: define dso_local swiftcc void @take_union_het_fp(i64 %0) {{.*}}{
 258 // CHECK:   [[V:%.*]] = alloca [[UNION:%.*]], align 8
 259 // CHECK:   [[CAST:%.*]] = bitcast [[UNION]]* [[V]] to { i64 }*
 260 // CHECK:   [[GEP:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[CAST]], i32 0, i32 0
 261 // CHECK:   store i64 %0, i64* [[GEP]], align 8
 262 // CHECK:   ret void
 263 // CHECK: }
 264 // CHECK-LABEL: define dso_local void @test_union_het_fp() {{.*}}{
 265 // CHECK:   [[AGG:%.*]] = alloca [[UNION:%.*]], align 8
 266 // CHECK:   [[CALL:%.*]] = call swiftcc i64 @return_union_het_fp()
 267 // CHECK:   [[T0:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64 }*
 268 // CHECK:   [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
 269 // CHECK:   store i64 [[CALL]], i64* [[T1]], align 8
 270 // CHECK:   [[T0:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64 }*
 271 // CHECK:   [[T1:%.*]] = getelementptr inbounds { i64 }, { i64 }* [[T0]], i32 0, i32 0
 272 // CHECK:   [[V0:%.*]] = load i64, i64* [[T1]], align 8
 273 // CHECK:   call swiftcc void @take_union_het_fp(i64 [[V0]])
 274 // CHECK:   ret void
 275 // CHECK: }
 276
 277
 278 typedef union {
 279   float f1;
 280   float f2;
 281 } union_hom_fp;
 282 TEST(union_hom_fp)
 283 // CHECK-LABEL: define dso_local void @test_union_hom_fp()
 284 // CHECK:   [[TMP:%.*]] = alloca [[REC:%.*]], align 4
 285 // CHECK:   [[CALL:%.*]] = call [[SWIFTCC]] float @return_union_hom_fp()
 286 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP]] to [[AGG:{ float }]]*
 287 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 288 // CHECK:   store float [[CALL]], float* [[T0]], align 4
 289 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP]] to [[AGG]]*
 290 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 291 // CHECK:   [[FIRST:%.*]] = load float, float* [[T0]], align 4
 292 // CHECK:   call [[SWIFTCC]] void @take_union_hom_fp(float [[FIRST]])
 293 // CHECK:   ret void
 294
 295 typedef union {
 296   float f1;
 297   float4 fv2;
 298 } union_hom_fp_partial;
 299 TEST(union_hom_fp_partial)
 300 // CHECK: define dso_local void @test_union_hom_fp_partial()
 301 // CHECK:   [[AGG:%.*]] = alloca [[UNION:%.*]], align 16
 302 // CHECK:   [[CALL:%.*]] = call swiftcc { float, float, float, float } @return_union_hom_fp_partial()
 303 // CHECK:   [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { float, float, float, float }*
 304 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 0
 305 // CHECK:   [[T1:%.*]] = extractvalue { float, float, float, float } [[CALL]], 0
 306 // CHECK:   store float [[T1]], float* [[T0]], align 16
 307 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 1
 308 // CHECK:   [[T1:%.*]] = extractvalue { float, float, float, float } [[CALL]], 1
 309 // CHECK:   store float [[T1]], float* [[T0]], align 4
 310 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 2
 311 // CHECK:   [[T1:%.*]] = extractvalue { float, float, float, float } [[CALL]], 2
 312 // CHECK:   store float [[T1]], float* [[T0]], align 8
 313 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 3
 314 // CHECK:   [[T1:%.*]] = extractvalue { float, float, float, float } [[CALL]], 3
 315 // CHECK:   store float [[T1]], float* [[T0]], align 4
 316 // CHECK:   [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { float, float, float, float }*
 317 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 0
 318 // CHECK:   [[V0:%.*]] = load float, float* [[T0]], align 16
 319 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 1
 320 // CHECK:   [[V1:%.*]] = load float, float* [[T0]], align 4
 321 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 2
 322 // CHECK:   [[V2:%.*]] = load float, float* [[T0]], align 8
 323 // CHECK:   [[T0:%.*]] = getelementptr inbounds { float, float, float, float }, { float, float, float, float }* [[CAST]], i32 0, i32 3
 324 // CHECK:   [[V3:%.*]] = load float, float* [[T0]], align 4
 325 // CHECK:   call swiftcc void @take_union_hom_fp_partial(float [[V0]], float [[V1]], float [[V2]], float [[V3]])
 326 // CHECK:   ret void
 327 // CHECK: }
 328
 329 typedef union {
 330   struct { int x, y; } f1;
 331   float4 fv2;
 332 } union_het_fpv_partial;
 333 TEST(union_het_fpv_partial)
 334 // CHECK-LABEL: define dso_local void @test_union_het_fpv_partial()
 335 // CHECK:   [[AGG:%.*]] = alloca [[UNION:%.*]], align 16
 336 // CHECK:   [[CALL:%.*]] = call swiftcc { i64, float, float } @return_union_het_fpv_partial()
 337 // CHECK:   [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64, float, float }*
 338 // CHECK:   [[T0:%.*]] = getelementptr inbounds { i64, float, float }, { i64, float, float }* [[CAST]], i32 0, i32 0
 339 // CHECK:   [[T1:%.*]] = extractvalue { i64, float, float } [[CALL]], 0
 340 // CHECK:   store i64 [[T1]], i64* [[T0]], align 16
 341 // CHECK:   [[T0:%.*]] = getelementptr inbounds { i64, float, float }, { i64, float, float }* [[CAST]], i32 0, i32 1
 342 // CHECK:   [[T1:%.*]] = extractvalue { i64, float, float } [[CALL]], 1
 343 // CHECK:   store float [[T1]], float* [[T0]], align 8
 344 // CHECK:   [[T0:%.*]] = getelementptr inbounds { i64, float, float }, { i64, float, float }* [[CAST]], i32 0, i32 2
 345 // CHECK:   [[T1:%.*]] = extractvalue { i64, float, float } [[CALL]], 2
 346 // CHECK:   store float [[T1]], float* [[T0]], align 4
 347 // CHECK:   [[CAST:%.*]] = bitcast [[UNION]]* [[AGG]] to { i64, float, float }*
 348 // CHECK:   [[T0:%.*]] = getelementptr inbounds { i64, float, float }, { i64, float, float }* [[CAST]], i32 0, i32 0
 349 // CHECK:   [[V0:%.*]] = load i64, i64* [[T0]], align 16
 350 // CHECK:   [[T0:%.*]] = getelementptr inbounds { i64, float, float }, { i64, float, float }* [[CAST]], i32 0, i32 1
 351 // CHECK:   [[V1:%.*]] = load float, float* [[T0]], align 8
 352 // CHECK:   [[T0:%.*]] = getelementptr inbounds { i64, float, float }, { i64, float, float }* [[CAST]], i32 0, i32 2
 353 // CHECK:   [[V2:%.*]] = load float, float* [[T0]], align 4
 354 // CHECK:   call swiftcc void @take_union_het_fpv_partial(i64 [[V0]], float [[V1]], float [[V2]])
 355 // CHECK:   ret void
 356 // CHECK: }
 357
 358 /*****************************************************************************/
 359 /****************************** VECTOR LEGALIZATION **************************/
 360 /*****************************************************************************/
 361
 362 TEST(int4)
 363 // CHECK-LABEL: define {{.*}} <4 x i32> @return_int4()
 364 // CHECK-LABEL: define {{.*}} @take_int4(<4 x i32>
 365
 366 TEST(int8)
 367 // CHECK-LABEL: define {{.*}} @return_int8()
 368 // CHECK:   [[RET:%.*]] = alloca [[REC:<8 x i32>]], align 32
 369 // CHECK:   [[VAR:%.*]] = alloca [[REC]], align
 370 // CHECK:   store
 371 // CHECK:   load
 372 // CHECK:   store
 373 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[RET]] to [[AGG:{ <4 x i32>, <4 x i32> }]]*
 374 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 375 // CHECK:   [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
 376 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 377 // CHECK:   [[SECOND:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
 378 // CHECK:   [[T0:%.*]] = insertvalue [[UAGG:{ <4 x i32>, <4 x i32> }]] poison, <4 x i32> [[FIRST]], 0
 379 // CHECK:   [[T1:%.*]] = insertvalue [[UAGG]] [[T0]], <4 x i32> [[SECOND]], 1
 380 // CHECK:   ret [[UAGG]] [[T1]]
 381 // CHECK-LABEL: define {{.*}} @take_int8(<4 x i32> noundef %0, <4 x i32> noundef %1)
 382 // CHECK:   [[V:%.*]] = alloca [[REC]], align
 383 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[V]] to [[AGG]]*
 384 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 385 // CHECK:   store <4 x i32> %0, <4 x i32>* [[T0]], align
 386 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 387 // CHECK:   store <4 x i32> %1, <4 x i32>* [[T0]], align
 388 // CHECK:   ret void
 389 // CHECK-LABEL: define dso_local void @test_int8()
 390 // CHECK:   [[TMP1:%.*]] = alloca [[REC]], align
 391 // CHECK:   [[TMP2:%.*]] = alloca [[REC]], align
 392 // CHECK:   [[CALL:%.*]] = call [[SWIFTCC]] [[UAGG]] @return_int8()
 393 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP1]] to [[AGG]]*
 394 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 395 // CHECK:   [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 0
 396 // CHECK:   store <4 x i32> [[T1]], <4 x i32>* [[T0]], align
 397 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 398 // CHECK:   [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 1
 399 // CHECK:   store <4 x i32> [[T1]], <4 x i32>* [[T0]], align
 400 // CHECK:   [[V:%.*]] = load [[REC]], [[REC]]* [[TMP1]], align
 401 // CHECK:   store [[REC]] [[V]], [[REC]]* [[TMP2]], align
 402 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP2]] to [[AGG]]*
 403 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 404 // CHECK:   [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
 405 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 406 // CHECK:   [[SECOND:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
 407 // CHECK:   call [[SWIFTCC]] void @take_int8(<4 x i32> noundef [[FIRST]], <4 x i32> noundef [[SECOND]])
 408 // CHECK:   ret void
 409
 410 TEST(int5)
 411 // CHECK-LABEL: define {{.*}} @return_int5()
 412 // CHECK:   [[RET:%.*]] = alloca [[REC:<5 x i32>]], align 32
 413 // CHECK:   [[VAR:%.*]] = alloca [[REC]], align
 414 // CHECK:   store
 415 // CHECK:   load
 416 // CHECK:   store
 417 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[RET]] to [[AGG:{ <4 x i32>, i32 }]]*
 418 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 419 // CHECK:   [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
 420 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 421 // CHECK:   [[SECOND:%.*]] = load i32, i32* [[T0]], align
 422 // CHECK:   [[T0:%.*]] = insertvalue [[UAGG:{ <4 x i32>, i32 }]] poison, <4 x i32> [[FIRST]], 0
 423 // CHECK:   [[T1:%.*]] = insertvalue [[UAGG]] [[T0]], i32 [[SECOND]], 1
 424 // CHECK:   ret [[UAGG]] [[T1]]
 425 // CHECK-LABEL: define {{.*}} @take_int5(<4 x i32> %0, i32 %1)
 426 // CHECK:   [[V:%.*]] = alloca [[REC]], align
 427 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[V]] to [[AGG]]*
 428 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 429 // CHECK:   store <4 x i32> %0, <4 x i32>* [[T0]], align
 430 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 431 // CHECK:   store i32 %1, i32* [[T0]], align
 432 // CHECK:   ret void
 433 // CHECK-LABEL: define dso_local void @test_int5()
 434 // CHECK:   [[TMP1:%.*]] = alloca [[REC]], align
 435 // CHECK:   [[TMP2:%.*]] = alloca [[REC]], align
 436 // CHECK:   [[CALL:%.*]] = call [[SWIFTCC]] [[UAGG]] @return_int5()
 437 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP1]] to [[AGG]]*
 438 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 439 // CHECK:   [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 0
 440 // CHECK:   store <4 x i32> [[T1]], <4 x i32>* [[T0]], align
 441 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 442 // CHECK:   [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 1
 443 // CHECK:   store i32 [[T1]], i32* [[T0]], align
 444 // CHECK:   [[V:%.*]] = load [[REC]], [[REC]]* [[TMP1]], align
 445 // CHECK:   store [[REC]] [[V]], [[REC]]* [[TMP2]], align
 446 // CHECK:   [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP2]] to [[AGG]]*
 447 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0
 448 // CHECK:   [[FIRST:%.*]] = load <4 x i32>, <4 x i32>* [[T0]], align
 449 // CHECK:   [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 1
 450 // CHECK:   [[SECOND:%.*]] = load i32, i32* [[T0]], align
 451 // CHECK:   call [[SWIFTCC]] void @take_int5(<4 x i32> [[FIRST]], i32 [[SECOND]])
 452 // CHECK:   ret void
 453
 454 typedef struct {
 455   int x;
 456   int3 v __attribute__((packed));
 457 } misaligned_int3;
 458 TEST(misaligned_int3)
 459 // CHECK-LABEL: define dso_local swiftcc void @take_misaligned_int3(i64 %0, i64 %1)