1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - -O1 %s | FileCheck %s 2 // 3 // Check that we generate !tbaa.struct metadata for struct copies. 4 struct A { 5 short s; 6 int i; 7 char c; 8 int j; 9 }; 10 11 void copy(struct A *a, struct A *b) { 12 *a = *b; 13 } 14 15 // CHECK: target datalayout = "{{.*}}p:[[P:64|32]] 16 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 16, i32 4, i1 false), !tbaa.struct [[TS:!.*]] 17 18 struct B { 19 char c1; 20 struct A a; 21 int ii; 22 }; 23 24 void copy2(struct B *a, struct B *b) { 25 *a = *b; 26 } 27 28 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 24, i32 4, i1 false), !tbaa.struct [[TS2:!.*]] 29 30 typedef _Complex int T2; 31 typedef _Complex char T5; 32 typedef _Complex int T7; 33 typedef struct T4 { T5 field0; T7 field1; } T4; 34 typedef union T1 { T2 field0; T4 field1; } T1; 35 36 void copy3 (T1 *a, T1 *b) { 37 *a = *b; 38 } 39 40 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 12, i32 4, i1 false), !tbaa.struct [[TS3:!.*]] 41 42 // Make sure that zero-length bitfield works. 43 #define ATTR __attribute__ ((ms_struct)) 44 struct five { 45 char a; 46 int :0; /* ignored; prior field is not a bitfield. */ 47 char b; 48 char c; 49 } ATTR; 50 void copy4(struct five *a, struct five *b) { 51 *a = *b; 52 } 53 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 3, i32 1, i1 false), !tbaa.struct [[TS4:!.*]] 54 55 struct six { 56 char a; 57 int :0; 58 char b; 59 char c; 60 }; 61 void copy5(struct six *a, struct six *b) { 62 *a = *b; 63 } 64 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 6, i32 1, i1 false), !tbaa.struct [[TS5:!.*]] 65 66 // CHECK: [[TS]] = metadata !{i64 0, i64 2, metadata !{{.*}}, i64 4, i64 4, metadata !{{.*}}, i64 8, i64 1, metadata !{{.*}}, i64 12, i64 4, metadata !{{.*}}} 67 // CHECK: [[CHAR:!.*]] = metadata !{metadata !"omnipotent char", metadata !{{.*}}} 68 // CHECK: [[INT:!.*]] = metadata !{metadata !"int", metadata [[CHAR]]} 69 // (offset, size) = (0,1) char; (4,2) short; (8,4) int; (12,1) char; (16,4) int; (20,4) int 70 // CHECK: [[TS2]] = metadata !{i64 0, i64 1, metadata !{{.*}}, i64 4, i64 2, metadata !{{.*}}, i64 8, i64 4, metadata !{{.*}}, i64 12, i64 1, metadata !{{.*}}, i64 16, i64 4, metadata {{.*}}, i64 20, i64 4, metadata {{.*}}} 71 // (offset, size) = (0,8) char; (0,2) char; (4,8) char 72 // CHECK: [[TS3]] = metadata !{i64 0, i64 8, metadata !{{.*}}, i64 0, i64 2, metadata !{{.*}}, i64 4, i64 8, metadata !{{.*}}} 73 // CHECK: [[TS4]] = metadata !{i64 0, i64 1, metadata [[CHAR]], i64 1, i64 4, metadata [[INT]], i64 1, i64 1, metadata [[CHAR]], i64 2, i64 1, metadata [[CHAR]]} 74 // CHECK: [[TS5]] = metadata !{i64 0, i64 1, metadata [[CHAR]], i64 4, i64 4, metadata [[INT]], i64 4, i64 1, metadata [[CHAR]], i64 5, i64 1, metadata [[CHAR]]} 75
