179 lines
7.3 KiB
C
179 lines
7.3 KiB
C
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// RUN: %clang -target x86_64 -emit-llvm -S -g %s -o - | FileCheck %s
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#define _(x) (__builtin_preserve_access_index(x))
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const void *unit1(const void *arg) {
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return _(arg);
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}
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// CHECK: define dso_local i8* @unit1
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// CHECK-NOT: llvm.preserve.array.access.index
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// CHECK-NOT: llvm.preserve.struct.access.index
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// CHECK-NOT: llvm.preserve.union.access.index
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const void *unit2(void) {
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return _((const void *)0xffffffffFFFF0000ULL);
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}
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// CHECK: define dso_local i8* @unit2
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// CHECK-NOT: llvm.preserve.array.access.index
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// CHECK-NOT: llvm.preserve.struct.access.index
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// CHECK-NOT: llvm.preserve.union.access.index
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const void *unit3(const int *arg) {
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return _(arg + 1);
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}
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// CHECK: define dso_local i8* @unit3
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// CHECK-NOT: llvm.preserve.array.access.index
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// CHECK-NOT: llvm.preserve.struct.access.index
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// CHECK-NOT: llvm.preserve.union.access.index
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const void *unit4(const int *arg) {
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return _(&arg[1]);
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}
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// CHECK: define dso_local i8* @unit4
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// CHECK-NOT: getelementptr
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// CHECK: call i32* @llvm.preserve.array.access.index.p0i32.p0i32(i32* %{{[0-9a-z]+}}, i32 0, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[POINTER:[0-9]+]]
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const void *unit5(const int *arg[5]) {
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return _(&arg[1][2]);
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}
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// CHECK: define dso_local i8* @unit5
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// CHECK-NOT: getelementptr
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// CHECK: call i32** @llvm.preserve.array.access.index.p0p0i32.p0p0i32(i32** %{{[0-9a-z]+}}, i32 0, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index !{{[0-9]+}}
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// CHECK-NOT: getelementptr
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// CHECK: call i32* @llvm.preserve.array.access.index.p0i32.p0i32(i32* %{{[0-9a-z]+}}, i32 0, i32 2), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[POINTER:[0-9]+]]
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struct s1 {
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char a;
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int b;
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};
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struct s2 {
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char a1:1;
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char a2:1;
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int b;
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};
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struct s3 {
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char a1:1;
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char a2:1;
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char :6;
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int b;
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};
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const void *unit6(struct s1 *arg) {
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return _(&arg->a);
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}
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// CHECK: define dso_local i8* @unit6
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// CHECK-NOT: getelementptr
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// CHECK: call i8* @llvm.preserve.struct.access.index.p0i8.p0s_struct.s1s(%struct.s1* %{{[0-9a-z]+}}, i32 0, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S1:[0-9]+]]
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const void *unit7(struct s1 *arg) {
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return _(&arg->b);
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}
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// CHECK: define dso_local i8* @unit7
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// CHECK-NOT: getelementptr
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// CHECK: call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1* %{{[0-9a-z]+}}, i32 1, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S1]]
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const void *unit8(struct s2 *arg) {
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return _(&arg->b);
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}
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// CHECK: define dso_local i8* @unit8
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// CHECK-NOT: getelementptr
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// CHECK: call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s2s(%struct.s2* %{{[0-9a-z]+}}, i32 1, i32 2), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S2:[0-9]+]]
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const void *unit9(struct s3 *arg) {
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return _(&arg->b);
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}
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// CHECK: define dso_local i8* @unit9
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// CHECK-NOT: getelementptr
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// CHECK: call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s3s(%struct.s3* %{{[0-9a-z]+}}, i32 1, i32 2), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S3:[0-9]+]]
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union u1 {
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char a;
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int b;
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};
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union u2 {
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char a;
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int :32;
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int b;
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};
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const void *unit10(union u1 *arg) {
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return _(&arg->a);
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}
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// CHECK: define dso_local i8* @unit10
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// CHECK-NOT: getelementptr
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// CHECK: call %union.u1* @llvm.preserve.union.access.index.p0s_union.u1s.p0s_union.u1s(%union.u1* %{{[0-9a-z]+}}, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_U1:[0-9]+]]
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const void *unit11(union u1 *arg) {
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return _(&arg->b);
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}
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// CHECK: define dso_local i8* @unit11
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// CHECK-NOT: getelementptr
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// CHECK: call %union.u1* @llvm.preserve.union.access.index.p0s_union.u1s.p0s_union.u1s(%union.u1* %{{[0-9a-z]+}}, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_U1]]
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const void *unit12(union u2 *arg) {
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return _(&arg->b);
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}
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// CHECK: define dso_local i8* @unit12
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// CHECK-NOT: getelementptr
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// CHECK: call %union.u2* @llvm.preserve.union.access.index.p0s_union.u2s.p0s_union.u2s(%union.u2* %{{[0-9a-z]+}}, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_U2:[0-9]+]]
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struct s4 {
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char d;
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union u {
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int b[4];
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char a;
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} c;
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};
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union u3 {
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struct s {
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int b[4];
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} c;
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char a;
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};
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const void *unit13(struct s4 *arg) {
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return _(&arg->c.b[2]);
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}
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// CHECK: define dso_local i8* @unit13
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// CHECK: call %union.u* @llvm.preserve.struct.access.index.p0s_union.us.p0s_struct.s4s(%struct.s4* %{{[0-9a-z]+}}, i32 1, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S4:[0-9]+]]
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// CHECK: call %union.u* @llvm.preserve.union.access.index.p0s_union.us.p0s_union.us(%union.u* %{{[0-9a-z]+}}, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_I_U:[0-9]+]]
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// CHECK: call i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]* %{{[0-9a-z]+}}, i32 1, i32 2), !dbg !{{[0-9]+}}, !llvm.preserve.access.index !{{[0-9]+}}
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const void *unit14(union u3 *arg) {
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return _(&arg->c.b[2]);
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}
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// CHECK: define dso_local i8* @unit14
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// CHECK: call %union.u3* @llvm.preserve.union.access.index.p0s_union.u3s.p0s_union.u3s(%union.u3* %{{[0-9a-z]+}}, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_U3:[0-9]+]]
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// CHECK: call [4 x i32]* @llvm.preserve.struct.access.index.p0a4i32.p0s_struct.ss(%struct.s* %{{[0-9a-z]+}}, i32 0, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_I_S:[0-9]+]]
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// CHECK: call i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]* %{{[0-9a-z]+}}, i32 1, i32 2), !dbg !{{[0-9]+}}, !llvm.preserve.access.index !{{[0-9]+}}
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const void *unit15(struct s4 *arg) {
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return _(&arg[2].c.a);
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}
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// CHECK: define dso_local i8* @unit15
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// CHECK: call %struct.s4* @llvm.preserve.array.access.index.p0s_struct.s4s.p0s_struct.s4s(%struct.s4* %{{[0-9a-z]+}}, i32 0, i32 2), !dbg !{{[0-9]+}}, !llvm.preserve.access.index !{{[0-9]+}}
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// CHECK: call %union.u* @llvm.preserve.struct.access.index.p0s_union.us.p0s_struct.s4s(%struct.s4* %{{[0-9a-z]+}}, i32 1, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S4]]
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// CHECK: call %union.u* @llvm.preserve.union.access.index.p0s_union.us.p0s_union.us(%union.u* %{{[0-9a-z]+}}, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_I_U]]
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const void *unit16(union u3 *arg) {
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return _(&arg[2].a);
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}
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// CHECK: define dso_local i8* @unit16
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// CHECK: call %union.u3* @llvm.preserve.array.access.index.p0s_union.u3s.p0s_union.u3s(%union.u3* %{{[0-9a-z]+}}, i32 0, i32 2), !dbg !{{[0-9]+}}, !llvm.preserve.access.index !{{[0-9]+}}
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// CHECK: call %union.u3* @llvm.preserve.union.access.index.p0s_union.u3s.p0s_union.u3s(%union.u3* %{{[0-9a-z]+}}, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_U3]]
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// CHECK: ![[POINTER]] = !DIDerivedType(tag: DW_TAG_pointer_type
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// CHECK: ![[STRUCT_S4]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s4"
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// CHECK: ![[UNION_I_U]] = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u"
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// CHECK: ![[UNION_U3]] = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u3"
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// CHECK: ![[STRUCT_I_S]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s"
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// CHECK: ![[STRUCT_S1]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1"
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// CHECK: ![[STRUCT_S2]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s2"
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// CHECK: ![[STRUCT_S3]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s3"
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// CHECK: ![[UNION_U1]] = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u1"
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// CHECK: ![[UNION_U2]] = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u2"
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