1 // RUN: %clang_cc1 -x c -debug-info-kind=limited -emit-llvm -triple x86_64-apple-darwin -o - %s | FileCheck %s 2 3 // CHECK: %struct.layout0 = type { i8, %struct.size8, i8 } 4 // CHECK: %struct.layout1 = type <{ i8, %struct.size8_anon, i8, [2 x i8] }> 5 // CHECK: %struct.layout2 = type <{ i8, %struct.size8_pack1, i8 }> 6 // CHECK: %struct.layout3 = type <{ i8, [3 x i8], %struct.size8_pack4, i8, [3 x i8] }> 7 8 // --------------------------------------------------------------------- 9 // Not packed. 10 // --------------------------------------------------------------------- 11 struct size8 { 12 int i : 4; 13 long long l : 60; 14 }; 15 struct layout0 { 16 char l0_ofs0; 17 struct size8 l0_ofs8; 18 int l0_ofs16 : 1; 19 }; 20 // CHECK: l0_ofs0 21 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs8", 22 // CHECK-SAME: {{.*}}size: 64, align: 64, offset: 64) 23 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs16", 24 // CHECK-SAME: {{.*}}size: 1, align: 32, offset: 128, flags: DIFlagBitField, extraData: i64 128) 25 26 27 // --------------------------------------------------------------------- 28 // Implicitly packed. 29 // --------------------------------------------------------------------- 30 struct size8_anon { 31 int : 4; 32 long long : 60; 33 }; 34 struct layout1 { 35 char l1_ofs0; 36 struct size8_anon l1_ofs1; 37 int l1_ofs9 : 1; 38 }; 39 // CHECK: l1_ofs0 40 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs1", 41 // CHECK-SAME: {{.*}}size: 64, align: 8, offset: 8) 42 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs9", 43 // CHECK-SAME: {{.*}}size: 1, align: 32, offset: 72, flags: DIFlagBitField, extraData: i64 72) 44 45 46 // --------------------------------------------------------------------- 47 // Explicitly packed. 48 // --------------------------------------------------------------------- 49 #pragma pack(1) 50 struct size8_pack1 { 51 int i : 4; 52 long long l : 60; 53 }; 54 struct layout2 { 55 char l2_ofs0; 56 struct size8_pack1 l2_ofs1; 57 int l2_ofs9 : 1; 58 }; 59 #pragma pack() 60 // CHECK: l2_ofs0 61 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs1", 62 // CHECK-SAME: {{.*}}size: 64, align: 8, offset: 8) 63 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs9", 64 // CHECK-SAME: {{.*}}size: 1, align: 32, offset: 72, flags: DIFlagBitField, extraData: i64 72) 65 66 67 68 // --------------------------------------------------------------------- 69 // Explicitly packed with different alignment. 70 // --------------------------------------------------------------------- 71 #pragma pack(4) 72 struct size8_pack4 { 73 int i : 4; 74 long long l : 60; 75 }; 76 struct layout3 { 77 char l3_ofs0; 78 struct size8_pack4 l3_ofs4; 79 int l3_ofs12 : 1; 80 }; 81 #pragma pack() 82 // CHECK: l3_ofs0 83 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs4", 84 // CHECK-SAME: {{.*}}size: 64, align: 32, offset: 32) 85 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs12", 86 // CHECK-SAME: {{.*}}size: 1, align: 32, offset: 96, flags: DIFlagBitField, extraData: i64 96) 87 88 struct layout0 l0; 89 struct layout1 l1; 90 struct layout2 l2; 91 struct layout3 l3; 92
