1 // RUN: %clang_cc1 -triple armv7-apple-darwin9 -emit-llvm -o - %s -Wno-return-type-c-linkage | FileCheck %s 2 3 // This isn't really testing anything ARM-specific; it's just a convenient 4 // 32-bit platform. 5 6 #define SWIFTCALL __attribute__((swiftcall)) 7 #define OUT __attribute__((swift_indirect_result)) 8 #define ERROR __attribute__((swift_error_result)) 9 #define CONTEXT __attribute__((swift_context)) 10 11 /*****************************************************************************/ 12 /********************************** LOWERING *********************************/ 13 /*****************************************************************************/ 14 15 #define TEST(TYPE) \ 16 extern "C" SWIFTCALL TYPE return_##TYPE(void) { \ 17 TYPE result = {}; \ 18 return result; \ 19 } \ 20 extern "C" SWIFTCALL void take_##TYPE(TYPE v) { \ 21 } \ 22 extern "C" void test_##TYPE() { \ 23 take_##TYPE(return_##TYPE()); \ 24 } 25 26 /*****************************************************************************/ 27 /*********************************** STRUCTS *********************************/ 28 /*****************************************************************************/ 29 30 typedef struct { 31 } struct_empty; 32 TEST(struct_empty); 33 // CHECK-LABEL: define {{.*}} @return_struct_empty() 34 // CHECK: ret void 35 // CHECK-LABEL: define {{.*}} @take_struct_empty() 36 // CHECK: ret void 37 38 // This is only properly testable in C++ because it relies on empty structs 39 // actually taking up space in a structure without requiring any extra data 40 // to be passed. 41 typedef struct { 42 int x; 43 struct_empty padding[2]; 44 char c1; 45 float f0; 46 float f1; 47 } struct_1; 48 TEST(struct_1); 49 // CHECK-LABEL: define {{.*}} @return_struct_1() 50 // CHECK: [[RET:%.*]] = alloca [[REC:%.*]], align 4 51 // CHECK: @llvm.memset 52 // CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[RET]] to [[AGG:{ i32, \[2 x i8\], i8, \[1 x i8\], float, float }]]* 53 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0 54 // CHECK: [[FIRST:%.*]] = load i32, i32* [[T0]], align 4 55 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 2 56 // CHECK: [[SECOND:%.*]] = load i8, i8* [[T0]], align 2 57 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 4 58 // CHECK: [[THIRD:%.*]] = load float, float* [[T0]], align 4 59 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 5 60 // CHECK: [[FOURTH:%.*]] = load float, float* [[T0]], align 4 61 // CHECK: [[T0:%.*]] = insertvalue [[UAGG:{ i32, i8, float, float }]] undef, i32 [[FIRST]], 0 62 // CHECK: [[T1:%.*]] = insertvalue [[UAGG]] [[T0]], i8 [[SECOND]], 1 63 // CHECK: [[T2:%.*]] = insertvalue [[UAGG]] [[T1]], float [[THIRD]], 2 64 // CHECK: [[T3:%.*]] = insertvalue [[UAGG]] [[T2]], float [[FOURTH]], 3 65 // CHECK: ret [[UAGG]] [[T3]] 66 // CHECK-LABEL: define {{.*}} @take_struct_1(i32, i8, float, float) 67 // CHECK: [[V:%.*]] = alloca [[REC]], align 4 68 // CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[V]] to [[AGG]]* 69 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0 70 // CHECK: store i32 %0, i32* [[T0]], align 4 71 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 2 72 // CHECK: store i8 %1, i8* [[T0]], align 2 73 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 4 74 // CHECK: store float %2, float* [[T0]], align 4 75 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 5 76 // CHECK: store float %3, float* [[T0]], align 4 77 // CHECK: ret void 78 // CHECK-LABEL: define void @test_struct_1() 79 // CHECK: [[TMP:%.*]] = alloca [[REC]], align 4 80 // CHECK: [[CALL:%.*]] = call [[SWIFTCC:swiftcc]] [[UAGG]] @return_struct_1() 81 // CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP]] to [[AGG]]* 82 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0 83 // CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 0 84 // CHECK: store i32 [[T1]], i32* [[T0]], align 4 85 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 2 86 // CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 1 87 // CHECK: store i8 [[T1]], i8* [[T0]], align 2 88 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 4 89 // CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 2 90 // CHECK: store float [[T1]], float* [[T0]], align 4 91 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 5 92 // CHECK: [[T1:%.*]] = extractvalue [[UAGG]] [[CALL]], 3 93 // CHECK: store float [[T1]], float* [[T0]], align 4 94 // CHECK: [[CAST_TMP:%.*]] = bitcast [[REC]]* [[TMP]] to [[AGG]]* 95 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 0 96 // CHECK: [[FIRST:%.*]] = load i32, i32* [[T0]], align 4 97 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 2 98 // CHECK: [[SECOND:%.*]] = load i8, i8* [[T0]], align 2 99 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 4 100 // CHECK: [[THIRD:%.*]] = load float, float* [[T0]], align 4 101 // CHECK: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[CAST_TMP]], i32 0, i32 5 102 // CHECK: [[FOURTH:%.*]] = load float, float* [[T0]], align 4 103 // CHECK: call [[SWIFTCC]] void @take_struct_1(i32 [[FIRST]], i8 [[SECOND]], float [[THIRD]], float [[FOURTH]]) 104 // CHECK: ret void 105 106 struct struct_indirect_1 { 107 int x; 108 ~struct_indirect_1(); 109 }; 110 TEST(struct_indirect_1) 111 112 // CHECK-LABEL: define {{.*}} void @return_struct_indirect_1({{.*}} noalias sret 113 114 // Should not be byval. 115 // CHECK-LABEL: define {{.*}} void @take_struct_indirect_1({{.*}}*{{( %.*)?}}) 116