clang/test/CodeGen/c11atomics-ios.c

   1 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv7-apple-ios -std=c11 | FileCheck %s
   2
   3 // There isn't really anything special about iOS; it just happens to
   4 // only deploy on processors with native atomics support, so it's a good
   5 // way to test those code-paths.
   6
   7 // CHECK-LABEL: define{{.*}} void @testFloat(ptr
   8 void testFloat(_Atomic(float) *fp) {
   9 // CHECK:      [[FP:%.*]] = alloca ptr
  10 // CHECK-NEXT: [[X:%.*]] = alloca float
  11 // CHECK-NEXT: [[F:%.*]] = alloca float
  12 // CHECK-NEXT: store ptr {{%.*}}, ptr [[FP]]
  13
  14 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[FP]]
  15 // CHECK-NEXT: store float 1.000000e+00, ptr [[T0]], align 4
  16   __c11_atomic_init(fp, 1.0f);
  17
  18 // CHECK-NEXT: store float 2.000000e+00, ptr [[X]], align 4
  19   _Atomic(float) x = 2.0f;
  20
  21 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[FP]]
  22 // CHECK-NEXT: [[T2:%.*]] = load atomic i32, ptr [[T0]] seq_cst, align 4
  23 // CHECK-NEXT: [[T3:%.*]] = bitcast i32 [[T2]] to float
  24 // CHECK-NEXT: store float [[T3]], ptr [[F]]
  25   float f = *fp;
  26
  27 // CHECK-NEXT: [[T0:%.*]] = load float, ptr [[F]], align 4
  28 // CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[FP]], align 4
  29 // CHECK-NEXT: [[T2:%.*]] = bitcast float [[T0]] to i32
  30 // CHECK-NEXT: store atomic i32 [[T2]], ptr [[T1]] seq_cst, align 4
  31   *fp = f;
  32
  33 // CHECK-NEXT: ret void
  34 }
  35
  36 // CHECK: define{{.*}} void @testComplexFloat(ptr
  37 void testComplexFloat(_Atomic(_Complex float) *fp) {
  38 // CHECK:      [[FP:%.*]] = alloca ptr, align 4
  39 // CHECK-NEXT: [[X:%.*]] = alloca [[CF:{ float, float }]], align 8
  40 // CHECK-NEXT: [[F:%.*]] = alloca [[CF]], align 4
  41 // CHECK-NEXT: [[TMP0:%.*]] = alloca [[CF]], align 8
  42 // CHECK-NEXT: [[TMP1:%.*]] = alloca [[CF]], align 8
  43 // CHECK-NEXT: store ptr
  44
  45 // CHECK-NEXT: [[P:%.*]] = load ptr, ptr [[FP]]
  46 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[P]], i32 0, i32 0
  47 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[CF]], ptr [[P]], i32 0, i32 1
  48 // CHECK-NEXT: store float 1.000000e+00, ptr [[T0]]
  49 // CHECK-NEXT: store float 0.000000e+00, ptr [[T1]]
  50   __c11_atomic_init(fp, 1.0f);
  51
  52 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[X]], i32 0, i32 0
  53 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[CF]], ptr [[X]], i32 0, i32 1
  54 // CHECK-NEXT: store float 2.000000e+00, ptr [[T0]]
  55 // CHECK-NEXT: store float 0.000000e+00, ptr [[T1]]
  56   _Atomic(_Complex float) x = 2.0f;
  57
  58 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[FP]]
  59 // CHECK-NEXT: [[T2:%.*]] = load atomic i64, ptr [[T0]] seq_cst, align 8
  60 // CHECK-NEXT: store i64 [[T2]], ptr [[TMP0]], align 8
  61 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[TMP0]], i32 0, i32 0
  62 // CHECK-NEXT: [[R:%.*]] = load float, ptr [[T0]]
  63 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[TMP0]], i32 0, i32 1
  64 // CHECK-NEXT: [[I:%.*]] = load float, ptr [[T0]]
  65 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[F]], i32 0, i32 0
  66 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[CF]], ptr [[F]], i32 0, i32 1
  67 // CHECK-NEXT: store float [[R]], ptr [[T0]]
  68 // CHECK-NEXT: store float [[I]], ptr [[T1]]
  69   _Complex float f = *fp;
  70
  71 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[F]], i32 0, i32 0
  72 // CHECK-NEXT: [[R:%.*]] = load float, ptr [[T0]]
  73 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[F]], i32 0, i32 1
  74 // CHECK-NEXT: [[I:%.*]] = load float, ptr [[T0]]
  75 // CHECK-NEXT: [[DEST:%.*]] = load ptr, ptr [[FP]], align 4
  76 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[CF]], ptr [[TMP1]], i32 0, i32 0
  77 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[CF]], ptr [[TMP1]], i32 0, i32 1
  78 // CHECK-NEXT: store float [[R]], ptr [[T0]]
  79 // CHECK-NEXT: store float [[I]], ptr [[T1]]
  80 // CHECK-NEXT: [[T1:%.*]] = load i64, ptr [[TMP1]], align 8
  81 // CHECK-NEXT: store atomic i64 [[T1]], ptr [[DEST]] seq_cst, align 8
  82   *fp = f;
  83
  84 // CHECK-NEXT: ret void
  85 }
  86
  87 typedef struct { short x, y, z, w; } S;
  88 // CHECK: define{{.*}} void @testStruct(ptr
  89 void testStruct(_Atomic(S) *fp) {
  90 // CHECK:      [[FP:%.*]] = alloca ptr, align 4
  91 // CHECK-NEXT: [[X:%.*]] = alloca [[S:.*]], align 8
  92 // CHECK-NEXT: [[F:%.*]] = alloca [[S:%.*]], align 2
  93 // CHECK-NEXT: [[TMP0:%.*]] = alloca [[S]], align 8
  94 // CHECK-NEXT: store ptr
  95
  96 // CHECK-NEXT: [[P:%.*]] = load ptr, ptr [[FP]]
  97 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[P]], i32 0, i32 0
  98 // CHECK-NEXT: store i16 1, ptr [[T0]], align 8
  99 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[P]], i32 0, i32 1
 100 // CHECK-NEXT: store i16 2, ptr [[T0]], align 2
 101 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[P]], i32 0, i32 2
 102 // CHECK-NEXT: store i16 3, ptr [[T0]], align 4
 103 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[P]], i32 0, i32 3
 104 // CHECK-NEXT: store i16 4, ptr [[T0]], align 2
 105   __c11_atomic_init(fp, (S){1,2,3,4});
 106
 107 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[X]], i32 0, i32 0
 108 // CHECK-NEXT: store i16 1, ptr [[T0]], align 8
 109 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[X]], i32 0, i32 1
 110 // CHECK-NEXT: store i16 2, ptr [[T0]], align 2
 111 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[X]], i32 0, i32 2
 112 // CHECK-NEXT: store i16 3, ptr [[T0]], align 4
 113 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[S]], ptr [[X]], i32 0, i32 3
 114 // CHECK-NEXT: store i16 4, ptr [[T0]], align 2
 115   _Atomic(S) x = (S){1,2,3,4};
 116
 117 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[FP]]
 118 // CHECK-NEXT: [[T2:%.*]] = load atomic i64, ptr [[T0]] seq_cst, align 8
 119 // CHECK-NEXT: store i64 [[T2]], ptr [[F]], align 2
 120   S f = *fp;
 121
 122 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[FP]]
 123 // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 8 [[TMP0]], ptr align 2 [[F]], i32 8, i1 false)
 124 // CHECK-NEXT: [[T4:%.*]] = load i64, ptr [[TMP0]], align 8
 125 // CHECK-NEXT: store atomic i64 [[T4]], ptr [[T0]] seq_cst, align 8
 126   *fp = f;
 127
 128 // CHECK-NEXT: ret void
 129 }
 130
 131 typedef struct { short x, y, z; } PS;
 132 // CHECK: define{{.*}} void @testPromotedStruct(ptr
 133 void testPromotedStruct(_Atomic(PS) *fp) {
 134 // CHECK:      [[FP:%.*]] = alloca ptr, align 4
 135 // CHECK-NEXT: [[X:%.*]] = alloca [[APS:.*]], align 8
 136 // CHECK-NEXT: [[F:%.*]] = alloca [[PS:%.*]], align 2
 137 // CHECK-NEXT: [[TMP0:%.*]] = alloca [[APS]], align 8
 138 // CHECK-NEXT: [[TMP1:%.*]] = alloca [[APS]], align 8
 139 // CHECK-NEXT: store ptr
 140
 141 // CHECK-NEXT: [[P:%.*]] = load ptr, ptr [[FP]]
 142 // CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[P]], i8 0, i64 8, i1 false)
 143 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[APS]], ptr [[P]], i32 0, i32 0
 144 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[PS]], ptr [[T0]], i32 0, i32 0
 145 // CHECK-NEXT: store i16 1, ptr [[T1]], align 8
 146 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[PS]], ptr [[T0]], i32 0, i32 1
 147 // CHECK-NEXT: store i16 2, ptr [[T1]], align 2
 148 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[PS]], ptr [[T0]], i32 0, i32 2
 149 // CHECK-NEXT: store i16 3, ptr [[T1]], align 4
 150   __c11_atomic_init(fp, (PS){1,2,3});
 151
 152 // CHECK-NEXT: call void @llvm.memset.p0.i32(ptr align 8 [[X]], i8 0, i32 8, i1 false)
 153 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[APS]], ptr [[X]], i32 0, i32 0
 154 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[PS]], ptr [[T0]], i32 0, i32 0
 155 // CHECK-NEXT: store i16 1, ptr [[T1]], align 8
 156 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[PS]], ptr [[T0]], i32 0, i32 1
 157 // CHECK-NEXT: store i16 2, ptr [[T1]], align 2
 158 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[PS]], ptr [[T0]], i32 0, i32 2
 159 // CHECK-NEXT: store i16 3, ptr [[T1]], align 4
 160   _Atomic(PS) x = (PS){1,2,3};
 161
 162 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[FP]]
 163 // CHECK-NEXT: [[T2:%.*]] = load atomic i64, ptr [[T0]] seq_cst, align 8
 164 // CHECK-NEXT: store i64 [[T2]], ptr [[TMP0]], align 8
 165 // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[APS]], ptr [[TMP0]], i32 0, i32 0
 166 // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[F]], ptr align 8 [[T0]], i32 6, i1 false)
 167   PS f = *fp;
 168
 169 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[FP]]
 170 // CHECK-NEXT: call void @llvm.memset.p0.i32(ptr align 8 [[TMP1]], i8 0, i32 8, i1 false)
 171 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[APS]], ptr [[TMP1]], i32 0, i32 0
 172 // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 8 [[T1]], ptr align 2 [[F]], i32 6, i1 false)
 173 // CHECK-NEXT: [[T5:%.*]] = load i64, ptr [[TMP1]], align 8
 174 // CHECK-NEXT: store atomic i64 [[T5]], ptr [[T0]] seq_cst, align 8
 175   *fp = f;
 176
 177 // CHECK-NEXT: ret void
 178 }
 179
 180 PS test_promoted_load(_Atomic(PS) *addr) {
 181   // CHECK-LABEL: @test_promoted_load(ptr noalias sret(%struct.PS) align 2 %agg.result, ptr noundef %addr)
 182   // CHECK:   [[ADDR_ARG:%.*]] = alloca ptr, align 4
 183   // CHECK:   [[ATOMIC_RES:%.*]] = alloca { %struct.PS, [2 x i8] }, align 8
 184   // CHECK:   store ptr %addr, ptr [[ADDR_ARG]], align 4
 185   // CHECK:   [[ADDR:%.*]] = load ptr, ptr [[ADDR_ARG]], align 4
 186   // CHECK:   [[VAL:%.*]] = load atomic i64, ptr [[ADDR]] seq_cst, align 8
 187   // CHECK:   store i64 [[VAL]], ptr [[ATOMIC_RES]], align 8
 188   // CHECK:   call void @llvm.memcpy.p0.p0.i32(ptr align 2 %agg.result, ptr align 8 [[ATOMIC_RES]], i32 6, i1 false)
 189
 190   return __c11_atomic_load(addr, 5);
 191 }
 192
 193 void test_promoted_store(_Atomic(PS) *addr, PS *val) {
 194   // CHECK-LABEL: @test_promoted_store(ptr noundef %addr, ptr noundef %val)
 195   // CHECK:   [[ADDR_ARG:%.*]] = alloca ptr, align 4
 196   // CHECK:   [[VAL_ARG:%.*]] = alloca ptr, align 4
 197   // CHECK:   [[NONATOMIC_TMP:%.*]] = alloca %struct.PS, align 2
 198   // CHECK:   [[ATOMIC_VAL:%.*]] = alloca { %struct.PS, [2 x i8] }, align 8
 199   // CHECK:   store ptr %addr, ptr [[ADDR_ARG]], align 4
 200   // CHECK:   store ptr %val, ptr [[VAL_ARG]], align 4
 201   // CHECK:   [[ADDR:%.*]] = load ptr, ptr [[ADDR_ARG]], align 4
 202   // CHECK:   [[VAL:%.*]] = load ptr, ptr [[VAL_ARG]], align 4
 203   // CHECK:   call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[NONATOMIC_TMP]], ptr align 2 [[VAL]], i32 6, i1 false)
 204   // CHECK:   call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[ATOMIC_VAL]], ptr align 2 [[NONATOMIC_TMP]], i64 6, i1 false)
 205   // CHECK:   [[VAL64:%.*]] = load i64, ptr [[ATOMIC_VAL]], align 8
 206   // CHECK:   store atomic i64 [[VAL64]], ptr [[ADDR]] seq_cst, align 8
 207
 208   __c11_atomic_store(addr, *val, 5);
 209 }
 210
 211 PS test_promoted_exchange(_Atomic(PS) *addr, PS *val) {
 212   // CHECK-LABEL: @test_promoted_exchange(ptr noalias sret(%struct.PS) align 2 %agg.result, ptr noundef %addr, ptr noundef %val)
 213   // CHECK:   [[ADDR_ARG:%.*]] = alloca ptr, align 4
 214   // CHECK:   [[VAL_ARG:%.*]] = alloca ptr, align 4
 215   // CHECK:   [[NONATOMIC_TMP:%.*]] = alloca %struct.PS, align 2
 216   // CHECK:   [[ATOMIC_VAL:%.*]] = alloca { %struct.PS, [2 x i8] }, align 8
 217   // CHECK:   [[ATOMIC_RES:%.*]] = alloca { %struct.PS, [2 x i8] }, align 8
 218   // CHECK:   store ptr %addr, ptr [[ADDR_ARG]], align 4
 219   // CHECK:   store ptr %val, ptr [[VAL_ARG]], align 4
 220   // CHECK:   [[ADDR:%.*]] = load ptr, ptr [[ADDR_ARG]], align 4
 221   // CHECK:   [[VAL:%.*]] = load ptr, ptr [[VAL_ARG]], align 4
 222   // CHECK:   call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[NONATOMIC_TMP]], ptr align 2 [[VAL]], i32 6, i1 false)
 223   // CHECK:   call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[ATOMIC_VAL]], ptr align 2 [[NONATOMIC_TMP]], i64 6, i1 false)
 224   // CHECK:   [[VAL64:%.*]] = load i64, ptr [[ATOMIC_VAL]], align 8
 225   // CHECK:   [[RES:%.*]] = atomicrmw xchg ptr [[ADDR]], i64 [[VAL64]] seq_cst, align 8
 226   // CHECK:   store i64 [[RES]], ptr [[ATOMIC_RES]], align 8
 227   // CHECK:   call void @llvm.memcpy.p0.p0.i32(ptr align 2 %agg.result, ptr align 8 [[ATOMIC_RES]], i32 6, i1 false)
 228   return __c11_atomic_exchange(addr, *val, 5);
 229 }
 230
 231 _Bool test_promoted_cmpxchg(_Atomic(PS) *addr, PS *desired, PS *new) {
 232   // CHECK:   define{{.*}} zeroext i1 @test_promoted_cmpxchg(ptr noundef %addr, ptr noundef %desired, ptr noundef %new) #0 {
 233   // CHECK:   [[ADDR_ARG:%.*]] = alloca ptr, align 4
 234   // CHECK:   [[DESIRED_ARG:%.*]] = alloca ptr, align 4
 235   // CHECK:   [[NEW_ARG:%.*]] = alloca ptr, align 4
 236   // CHECK:   [[NONATOMIC_TMP:%.*]] = alloca %struct.PS, align 2
 237   // CHECK:   [[ATOMIC_DESIRED:%.*]] = alloca { %struct.PS, [2 x i8] }, align 8
 238   // CHECK:   [[ATOMIC_NEW:%.*]] = alloca { %struct.PS, [2 x i8] }, align 8
 239   // CHECK:   [[RES_ADDR:%.*]] = alloca i8, align 1
 240   // CHECK:   store ptr %addr, ptr [[ADDR_ARG]], align 4
 241   // CHECK:   store ptr %desired, ptr [[DESIRED_ARG]], align 4
 242   // CHECK:   store ptr %new, ptr [[NEW_ARG]], align 4
 243   // CHECK:   [[ADDR:%.*]] = load ptr, ptr [[ADDR_ARG]], align 4
 244   // CHECK:   [[DESIRED:%.*]] = load ptr, ptr [[DESIRED_ARG]], align 4
 245   // CHECK:   [[NEW:%.*]] = load ptr, ptr [[NEW_ARG]], align 4
 246   // CHECK:   call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[NONATOMIC_TMP]], ptr align 2 [[NEW]], i32 6, i1 false)
 247   // CHECK:   call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[ATOMIC_DESIRED:%.*]], ptr align 2 [[DESIRED]], i64 6, i1 false)
 248   // CHECK:   call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[ATOMIC_NEW]], ptr align 2 [[NONATOMIC_TMP]], i64 6, i1 false)
 249   // CHECK:   [[ATOMIC_DESIRED_VAL64:%.*]] = load i64, ptr [[ATOMIC_DESIRED:%.*]], align 8
 250   // CHECK:   [[ATOMIC_NEW_VAL64:%.*]] = load i64, ptr [[ATOMIC_NEW]], align 8
 251   // CHECK:   [[RES:%.*]] = cmpxchg ptr [[ADDR]], i64 [[ATOMIC_DESIRED_VAL64]], i64 [[ATOMIC_NEW_VAL64]] seq_cst seq_cst, align 8
 252   // CHECK:   [[RES_VAL64:%.*]] = extractvalue { i64, i1 } [[RES]], 0
 253   // CHECK:   [[RES_BOOL:%.*]] = extractvalue { i64, i1 } [[RES]], 1
 254   // CHECK:   br i1 [[RES_BOOL]], label {{%.*}}, label {{%.*}}
 255
 256   // CHECK:   store i64 [[RES_VAL64]], ptr [[ATOMIC_DESIRED]], align 8
 257   // CHECK:   br label {{%.*}}
 258
 259   // CHECK:   [[RES_BOOL8:%.*]] = zext i1 [[RES_BOOL]] to i8
 260   // CHECK:   store i8 [[RES_BOOL8]], ptr [[RES_ADDR]], align 1
 261   // CHECK:   [[RES_BOOL8:%.*]] = load i8, ptr [[RES_ADDR]], align 1
 262   // CHECK:   [[RETVAL:%.*]] = trunc i8 [[RES_BOOL8]] to i1
 263   // CHECK:   ret i1 [[RETVAL]]
 264
 265   return __c11_atomic_compare_exchange_strong(addr, desired, *new, 5, 5);
 266 }
 267
 268 struct Empty {};
 269
 270 struct Empty testEmptyStructLoad(_Atomic(struct Empty)* empty) {
 271   // CHECK-LABEL: @testEmptyStructLoad(
 272   // CHECK-NOT: @__atomic_load
 273   // CHECK: load atomic i8, ptr %{{.*}} seq_cst, align 1
 274   return *empty;
 275 }
 276
 277 void testEmptyStructStore(_Atomic(struct Empty)* empty, struct Empty value) {
 278   // CHECK-LABEL: @testEmptyStructStore(
 279   // CHECK-NOT: @__atomic_store
 280   // CHECK: store atomic i8 %{{.*}}, ptr %{{.*}} seq_cst, align 1
 281   *empty = value;
 282 }