| // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm %s -o - | FileCheck %s |
| |
| // Capture the type and name so matching later is cleaner. |
| struct CompoundTy { int a; }; |
| // CHECK: @MyCLH = constant [[MY_CLH:[^,]+]] |
| const struct CompoundTy *const MyCLH = &(struct CompoundTy){3}; |
| |
| int* a = &(int){1}; |
| struct s {int a, b, c;} * b = &(struct s) {1, 2, 3}; |
| _Complex double * x = &(_Complex double){1.0f}; |
| typedef int v4i32 __attribute((vector_size(16))); |
| v4i32 *y = &(v4i32){1,2,3,4}; |
| |
| // Check generated code for GNU constant array init from compound literal, |
| // for a global variable. |
| // CHECK: @compound_array = global [8 x i32] [i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8] |
| int compound_array[] = __extension__(__builtin_choose_expr(0, 0, _Generic(1, int: (int[]){1, 2, 3, 4, 5, 6, 7, 8}))); |
| |
| void xxx() { |
| int* a = &(int){1}; |
| struct s {int a, b, c;} * b = &(struct s) {1, 2, 3}; |
| _Complex double * x = &(_Complex double){1.0f}; |
| } |
| |
| // CHECK-LABEL: define void @f() |
| void f() { |
| typedef struct S { int x,y; } S; |
| // CHECK: [[S:%[a-zA-Z0-9.]+]] = alloca [[STRUCT:%[a-zA-Z0-9.]+]], |
| struct S s; |
| // CHECK-NEXT: [[COMPOUNDLIT:%[a-zA-Z0-9.]+]] = alloca [[STRUCT]] |
| // CHECK-NEXT: [[CX:%[a-zA-Z0-9.]+]] = getelementptr inbounds [[STRUCT]], [[STRUCT]]* [[COMPOUNDLIT]], i32 0, i32 0 |
| // CHECK-NEXT: [[SY:%[a-zA-Z0-9.]+]] = getelementptr inbounds [[STRUCT]], [[STRUCT]]* [[S]], i32 0, i32 1 |
| // CHECK-NEXT: [[TMP:%[a-zA-Z0-9.]+]] = load i32, i32* [[SY]] |
| // CHECK-NEXT: store i32 [[TMP]], i32* [[CX]] |
| // CHECK-NEXT: [[CY:%[a-zA-Z0-9.]+]] = getelementptr inbounds [[STRUCT]], [[STRUCT]]* [[COMPOUNDLIT]], i32 0, i32 1 |
| // CHECK-NEXT: [[SX:%[a-zA-Z0-9.]+]] = getelementptr inbounds [[STRUCT]], [[STRUCT]]* [[S]], i32 0, i32 0 |
| // CHECK-NEXT: [[TMP:%[a-zA-Z0-9.]+]] = load i32, i32* [[SX]] |
| // CHECK-NEXT: store i32 [[TMP]], i32* [[CY]] |
| // CHECK-NEXT: [[SI8:%[a-zA-Z0-9.]+]] = bitcast [[STRUCT]]* [[S]] to i8* |
| // CHECK-NEXT: [[COMPOUNDLITI8:%[a-zA-Z0-9.]+]] = bitcast [[STRUCT]]* [[COMPOUNDLIT]] to i8* |
| // CHECK-NEXT: call void @llvm.memcpy{{.*}}(i8* align {{[0-9]+}} [[SI8]], i8* align {{[0-9]+}} [[COMPOUNDLITI8]] |
| s = (S){s.y,s.x}; |
| // CHECK-NEXT: ret void |
| } |
| |
| // CHECK-LABEL: define i48 @g( |
| struct G { short x, y, z; }; |
| struct G g(int x, int y, int z) { |
| // CHECK: [[RESULT:%.*]] = alloca [[G:%.*]], align 2 |
| // CHECK-NEXT: [[X:%.*]] = alloca i32, align 4 |
| // CHECK-NEXT: [[Y:%.*]] = alloca i32, align 4 |
| // CHECK-NEXT: [[Z:%.*]] = alloca i32, align 4 |
| // CHECK-NEXT: [[COERCE_TEMP:%.*]] = alloca i48 |
| // CHECK-NEXT: store i32 |
| // CHECK-NEXT: store i32 |
| // CHECK-NEXT: store i32 |
| |
| // Evaluate the compound literal directly in the result value slot. |
| // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[G]], [[G]]* [[RESULT]], i32 0, i32 0 |
| // CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[X]], align 4 |
| // CHECK-NEXT: [[T2:%.*]] = trunc i32 [[T1]] to i16 |
| // CHECK-NEXT: store i16 [[T2]], i16* [[T0]], align 2 |
| // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[G]], [[G]]* [[RESULT]], i32 0, i32 1 |
| // CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[Y]], align 4 |
| // CHECK-NEXT: [[T2:%.*]] = trunc i32 [[T1]] to i16 |
| // CHECK-NEXT: store i16 [[T2]], i16* [[T0]], align 2 |
| // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[G]], [[G]]* [[RESULT]], i32 0, i32 2 |
| // CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[Z]], align 4 |
| // CHECK-NEXT: [[T2:%.*]] = trunc i32 [[T1]] to i16 |
| // CHECK-NEXT: store i16 [[T2]], i16* [[T0]], align 2 |
| return (struct G) { x, y, z }; |
| |
| // CHECK-NEXT: [[T0:%.*]] = bitcast i48* [[COERCE_TEMP]] to i8* |
| // CHECK-NEXT: [[T1:%.*]] = bitcast [[G]]* [[RESULT]] to i8* |
| // CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align {{[0-9]+}} [[T0]], i8* align {{[0-9]+}} [[T1]], i64 6 |
| // CHECK-NEXT: [[T0:%.*]] = load i48, i48* [[COERCE_TEMP]] |
| // CHECK-NEXT: ret i48 [[T0]] |
| } |
| |
| // We had a bug where we'd emit a new GlobalVariable for each time we used a |
| // const pointer to a variable initialized by a compound literal. |
| // CHECK-LABEL: define i32 @compareMyCLH() #0 |
| int compareMyCLH() { |
| // CHECK: store i8* bitcast ([[MY_CLH]] to i8*) |
| const void *a = MyCLH; |
| // CHECK: store i8* bitcast ([[MY_CLH]] to i8*) |
| const void *b = MyCLH; |
| return a == b; |
| } |
| |
| // Check generated code for GNU constant array init from compound literal, |
| // for a local variable. |
| // CHECK-LABEL: define i32 @compound_array_fn() |
| // CHECK: [[COMPOUND_ARRAY:%.*]] = alloca [8 x i32] |
| // CHECK: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}}, i64 32, i1 false) |
| int compound_array_fn() { |
| int compound_array[] = (int[]){1,2,3,4,5,6,7,8}; |
| return compound_array[0]; |
| } |