92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
// RUN: %clang_cc1 -x c -g -emit-llvm -triple x86_64-apple-darwin -o - %s | FileCheck %s
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// CHECK: %struct.layout0 = type { i8, %struct.size8, i8 }
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// CHECK: %struct.layout1 = type <{ i8, %struct.size8_anon, i8, [2 x i8] }>
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// CHECK: %struct.layout2 = type <{ i8, %struct.size8_pack1, i8 }>
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// CHECK: %struct.layout3 = type <{ i8, [3 x i8], %struct.size8_pack4, i8, [3 x i8] }>
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// ---------------------------------------------------------------------
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// Not packed.
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// ---------------------------------------------------------------------
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struct size8 {
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int i : 4;
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long long l : 60;
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};
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struct layout0 {
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char l0_ofs0;
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struct size8 l0_ofs8;
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int l0_ofs16 : 1;
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};
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// CHECK: l0_ofs0
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs8",
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// CHECK-SAME: {{.*}}size: 64, align: 64, offset: 64)
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs16",
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// CHECK-SAME: {{.*}}size: 1, align: 32, offset: 128)
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// ---------------------------------------------------------------------
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// Implicitly packed.
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// ---------------------------------------------------------------------
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struct size8_anon {
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int : 4;
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long long : 60;
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};
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struct layout1 {
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char l1_ofs0;
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struct size8_anon l1_ofs1;
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int l1_ofs9 : 1;
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};
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// CHECK: l1_ofs0
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs1",
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// CHECK-SAME: {{.*}}size: 64, align: 8, offset: 8)
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs9",
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// CHECK-SAME: {{.*}}size: 1, align: 32, offset: 72)
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// ---------------------------------------------------------------------
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// Explicitly packed.
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// ---------------------------------------------------------------------
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#pragma pack(1)
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struct size8_pack1 {
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int i : 4;
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long long l : 60;
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};
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struct layout2 {
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char l2_ofs0;
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struct size8_pack1 l2_ofs1;
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int l2_ofs9 : 1;
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};
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#pragma pack()
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// CHECK: l2_ofs0
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs1",
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// CHECK-SAME: {{.*}}size: 64, align: 8, offset: 8)
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs9",
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// CHECK-SAME: {{.*}}size: 1, align: 32, offset: 72)
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// ---------------------------------------------------------------------
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// Explicitly packed with different alignment.
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// ---------------------------------------------------------------------
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#pragma pack(4)
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struct size8_pack4 {
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int i : 4;
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long long l : 60;
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};
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struct layout3 {
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char l3_ofs0;
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struct size8_pack4 l3_ofs4;
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int l3_ofs12 : 1;
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};
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#pragma pack()
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// CHECK: l3_ofs0
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs4",
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// CHECK-SAME: {{.*}}size: 64, align: 32, offset: 32)
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs12",
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// CHECK-SAME: {{.*}}size: 1, align: 32, offset: 96)
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struct layout0 l0;
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struct layout1 l1;
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struct layout2 l2;
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struct layout3 l3;
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