130 lines
5.2 KiB
C++
130 lines
5.2 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - -O1 %s | \
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// RUN: FileCheck -check-prefixes=CHECK,CHECK-OLD %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -new-struct-path-tbaa \
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// RUN: -emit-llvm -o - -O1 %s | \
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// RUN: FileCheck -check-prefixes=CHECK,CHECK-NEW %s
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//
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// Check that we generate TBAA metadata for struct copies correctly.
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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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typedef A __attribute__((may_alias)) AA;
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void copy(A *a1, A *a2) {
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// CHECK-LABEL: _Z4copyP1AS0_
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(16) %{{.*}}, i8* nonnull align 4 dereferenceable(16) %{{.*}}, i64 16, i1 false)
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// CHECK-OLD-SAME: !tbaa.struct [[TS:!.*]]
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// CHECK-NEW-SAME: !tbaa [[TAG_A:![0-9]*]]
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*a1 = *a2;
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}
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struct B {
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char c;
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A a;
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int i;
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};
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void copy2(B *b1, B *b2) {
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// CHECK-LABEL: _Z5copy2P1BS0_
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(24) %{{.*}}, i8* nonnull align 4 dereferenceable(24) %{{.*}}, i64 24, i1 false)
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// CHECK-OLD-SAME: !tbaa.struct [[TS2:!.*]]
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// CHECK-NEW-SAME: !tbaa [[TAG_B:![0-9]*]]
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*b1 = *b2;
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}
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struct S {
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_Complex char cc;
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_Complex int ci;
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};
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union U {
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_Complex int ci;
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S s;
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};
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void copy3(U *u1, U *u2) {
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// CHECK-LABEL: _Z5copy3P1US0_
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(12) %{{.*}}, i8* nonnull align 4 dereferenceable(12) %{{.*}}, i64 12, i1 false)
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// CHECK-OLD-SAME: !tbaa.struct [[TS3:!.*]]
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// CHECK-NEW-SAME: !tbaa [[TAG_U:![0-9]*]]
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*u1 = *u2;
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}
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// Make sure that zero-length bitfield works.
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struct C {
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char a;
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int : 0; // Shall not be ignored; see r185018.
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char b;
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char c;
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} __attribute__((ms_struct));
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void copy4(C *c1, C *c2) {
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// CHECK-LABEL: _Z5copy4P1CS0_
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(3) {{.*}}, i8* nonnull align 1 dereferenceable(3) {{.*}}, i64 3, i1 false)
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// CHECK-OLD-SAME: !tbaa.struct [[TS4:!.*]]
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// CHECK-NEW-SAME: !tbaa [[TAG_C:![0-9]*]]
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*c1 = *c2;
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}
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struct D {
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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(D *d1, D *d2) {
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// CHECK-LABEL: _Z5copy5P1DS0_
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(6) {{.*}}, i8* nonnull align 1 dereferenceable(6) {{.*}}, i64 6, i1 false)
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// CHECK-OLD-SAME: !tbaa.struct [[TS5:!.*]]
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// CHECK-NEW-SAME: !tbaa [[TAG_D:![0-9]*]]
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*d1 = *d2;
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}
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void copy6(AA *a1, A *a2) {
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// CHECK-LABEL: _Z5copy6P1AS0_
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(16) %{{.*}}, i8* nonnull align 4 dereferenceable(16) %{{.*}}, i64 16, i1 false)
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// CHECK-OLD-SAME: !tbaa.struct [[TS]]
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// CHECK-NEW-SAME: !tbaa [[TAG_char:![0-9]*]]
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*a1 = *a2;
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}
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void copy7(A *a1, AA *a2) {
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// CHECK-LABEL: _Z5copy7P1AS0_
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(16) %{{.*}}, i8* nonnull align 4 dereferenceable(16) %{{.*}}, i64 16, i1 false)
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// CHECK-OLD-SAME: !tbaa.struct [[TS]]
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// CHECK-NEW-SAME: !tbaa [[TAG_char]]
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*a1 = *a2;
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}
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// CHECK-OLD: [[TS]] = !{i64 0, i64 2, !{{.*}}, i64 4, i64 4, !{{.*}}, i64 8, i64 1, !{{.*}}, i64 12, i64 4, !{{.*}}}
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// CHECK-OLD: [[CHAR:!.*]] = !{!"omnipotent char", !{{.*}}}
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// CHECK-OLD: [[TAG_INT:!.*]] = !{[[INT:!.*]], [[INT]], i64 0}
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// CHECK-OLD: [[INT]] = !{!"int", [[CHAR]]
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// CHECK-OLD: [[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-OLD: [[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-OLD: [[TS3]] = !{i64 0, i64 8, !{{.*}}, i64 0, i64 2, !{{.*}}, i64 4, i64 8, !{{.*}}}
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// CHECK-OLD: [[TS4]] = !{i64 0, i64 1, [[TAG_CHAR]], i64 1, i64 1, [[TAG_CHAR]], i64 2, i64 1, [[TAG_CHAR]]}
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// CHECK-OLD: [[TS5]] = !{i64 0, i64 1, [[TAG_CHAR]], i64 4, i64 1, [[TAG_CHAR]], i64 5, i64 1, [[TAG_CHAR]]}
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// CHECK-NEW-DAG: [[TYPE_char:!.*]] = !{{{.*}}, i64 1, !"omnipotent char"}
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// CHECK-NEW-DAG: [[TAG_char]] = !{[[TYPE_char]], [[TYPE_char]], i64 0, i64 0}
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// CHECK-NEW-DAG: [[TYPE_short:!.*]] = !{[[TYPE_char]], i64 2, !"short"}
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// CHECK-NEW-DAG: [[TYPE_int:!.*]] = !{[[TYPE_char]], i64 4, !"int"}
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// CHECK-NEW-DAG: [[TYPE_A:!.*]] = !{[[TYPE_char]], i64 16, !"_ZTS1A", [[TYPE_short]], i64 0, i64 2, [[TYPE_int]], i64 4, i64 4, [[TYPE_char]], i64 8, i64 1, [[TYPE_int]], i64 12, i64 4}
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// CHECK-NEW-DAG: [[TAG_A]] = !{[[TYPE_A]], [[TYPE_A]], i64 0, i64 16}
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// CHECK-NEW-DAG: [[TYPE_B:!.*]] = !{[[TYPE_char]], i64 24, !"_ZTS1B", [[TYPE_char]], i64 0, i64 1, [[TYPE_A]], i64 4, i64 16, [[TYPE_int]], i64 20, i64 4}
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// CHECK-NEW-DAG: [[TAG_B]] = !{[[TYPE_B]], [[TYPE_B]], i64 0, i64 24}
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// CHECK-NEW-DAG: [[TAG_U]] = !{[[TYPE_char]], [[TYPE_char]], i64 0, i64 12}
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// CHECK-NEW-DAG: [[TYPE_C:!.*]] = !{[[TYPE_char]], i64 3, !"_ZTS1C", [[TYPE_char]], i64 0, i64 1, [[TYPE_char]], i64 1, i64 1, [[TYPE_char]], i64 2, i64 1}
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// CHECK-NEW-DAG: [[TAG_C]] = !{[[TYPE_C]], [[TYPE_C]], i64 0, i64 3}
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// CHECK-NEW-DAG: [[TYPE_D:!.*]] = !{[[TYPE_char]], i64 6, !"_ZTS1D", [[TYPE_char]], i64 0, i64 1, [[TYPE_char]], i64 4, i64 1, [[TYPE_char]], i64 5, i64 1}
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// CHECK-NEW-DAG: [[TAG_D]] = !{[[TYPE_D]], [[TYPE_D]], i64 0, i64 6}
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