76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - -O1 %s | FileCheck %s
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//
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// Check that we generate !tbaa.struct metadata for struct copies.
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struct A {
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short s;
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int i;
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char c;
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int j;
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};
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void copy(struct A *a, struct A *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* %{{.*}}, i64 16, i32 4, i1 false), !tbaa.struct [[TS:!.*]]
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struct B {
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char c1;
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struct A a;
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int ii;
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};
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void copy2(struct B *a, struct B *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* %{{.*}}, i64 24, i32 4, i1 false), !tbaa.struct [[TS2:!.*]]
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typedef _Complex int T2;
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typedef _Complex char T5;
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typedef _Complex int T7;
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typedef struct T4 { T5 field0; T7 field1; } T4;
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typedef union T1 { T2 field0; T4 field1; } T1;
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void copy3 (T1 *a, T1 *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* %{{.*}}, i64 12, i32 4, i1 false), !tbaa.struct [[TS3:!.*]]
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// Make sure that zero-length bitfield works.
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#define ATTR __attribute__ ((ms_struct))
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struct five {
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char a;
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int :0; /* ignored; prior field is not a bitfield. */
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char b;
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char c;
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} ATTR;
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void copy4(struct five *a, struct five *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* %{{.*}}, i64 3, i32 1, i1 false), !tbaa.struct [[TS4:!.*]]
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struct six {
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char a;
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int :0;
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char b;
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char c;
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};
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void copy5(struct six *a, struct six *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* %{{.*}}, i64 6, i32 1, i1 false), !tbaa.struct [[TS5:!.*]]
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// CHECK: [[TS]] = !{i64 0, i64 2, !{{.*}}, i64 4, i64 4, !{{.*}}, i64 8, i64 1, !{{.*}}, i64 12, i64 4, !{{.*}}}
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// CHECK: [[CHAR:!.*]] = !{!"omnipotent char", !{{.*}}}
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// CHECK: [[TAG_INT:!.*]] = !{[[INT:!.*]], [[INT]], i64 0}
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// CHECK: [[INT]] = !{!"int", [[CHAR]]
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// CHECK: [[TAG_CHAR:!.*]] = !{[[CHAR]], [[CHAR]], i64 0}
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// (offset, size) = (0,1) char; (4,2) short; (8,4) int; (12,1) char; (16,4) int; (20,4) int
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// CHECK: [[TS2]] = !{i64 0, i64 1, !{{.*}}, i64 4, i64 2, !{{.*}}, i64 8, i64 4, !{{.*}}, i64 12, i64 1, !{{.*}}, i64 16, i64 4, {{.*}}, i64 20, i64 4, {{.*}}}
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// (offset, size) = (0,8) char; (0,2) char; (4,8) char
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// CHECK: [[TS3]] = !{i64 0, i64 8, !{{.*}}, i64 0, i64 2, !{{.*}}, i64 4, i64 8, !{{.*}}}
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// CHECK: [[TS4]] = !{i64 0, i64 1, [[TAG_CHAR]], i64 1, i64 4, [[TAG_INT]], i64 1, i64 1, [[TAG_CHAR]], i64 2, i64 1, [[TAG_CHAR]]}
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// CHECK: [[TS5]] = !{i64 0, i64 1, [[TAG_CHAR]], i64 4, i64 4, [[TAG_INT]], i64 4, i64 1, [[TAG_CHAR]], i64 5, i64 1, [[TAG_CHAR]]}
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