caio/clang-p2996
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clang-p2996/clang/test/CodeGen/tbaa.cpp
Manman Ren a6b7303e4c Struct-path aware TBAA: change the format of TBAAStructType node. 
We switch the order of offset and field type to make TBAAStructType node
(name, parent node, offset) similar to scalar TBAA node (name, parent node).

llvm-svn: 180653
2013-04-27 00:26:07 +00:00

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// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -struct-path-tbaa -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=PATH
// Test TBAA metadata generated by front-end.
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
typedef unsigned long long uint64_t;
typedef struct
{
uint16_t f16;
uint32_t f32;
uint16_t f16_2;
uint32_t f32_2;
} StructA;
typedef struct
{
uint16_t f16;
StructA a;
uint32_t f32;
} StructB;
typedef struct
{
uint16_t f16;
StructB b;
uint32_t f32;
} StructC;
typedef struct
{
uint16_t f16;
StructB b;
uint32_t f32;
uint8_t f8;
} StructD;
typedef struct
{
uint16_t f16;
uint32_t f32;
} StructS;
typedef struct
{
uint16_t f16;
uint32_t f32;
} StructS2;
uint32_t g(uint32_t *s, StructA *A, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32:!.*]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32:!.*]]
*s = 1;
A->f32 = 4;
return *s;
}
uint32_t g2(uint32_t *s, StructA *A, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i16 4, i16* %{{.*}}, align 2, !tbaa !5
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH: store i16 4, i16* %{{.*}}, align 2, !tbaa [[TAG_A_f16:!.*]]
*s = 1;
A->f16 = 4;
return *s;
}
uint32_t g3(StructA *A, StructB *B, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32:!.*]]
A->f32 = 1;
B->a.f32 = 4;
return A->f32;
}
uint32_t g4(StructA *A, StructB *B, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i16 4, i16* %{{.*}}, align 2, !tbaa !5
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i16 4, i16* %{{.*}}, align 2, !tbaa [[TAG_B_a_f16:!.*]]
A->f32 = 1;
B->a.f16 = 4;
return A->f32;
}
uint32_t g5(StructA *A, StructB *B, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_f32:!.*]]
A->f32 = 1;
B->f32 = 4;
return A->f32;
}
uint32_t g6(StructA *A, StructB *B, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32_2:!.*]]
A->f32 = 1;
B->a.f32_2 = 4;
return A->f32;
}
uint32_t g7(StructA *A, StructS *S, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32:!.*]]
A->f32 = 1;
S->f32 = 4;
return A->f32;
}
uint32_t g8(StructA *A, StructS *S, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i16 4, i16* %{{.*}}, align 2, !tbaa !5
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i16 4, i16* %{{.*}}, align 2, !tbaa [[TAG_S_f16:!.*]]
A->f32 = 1;
S->f16 = 4;
return A->f32;
}
uint32_t g9(StructS *S, StructS2 *S2, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S2_f32:!.*]]
S->f32 = 1;
S2->f32 = 4;
return S->f32;
}
uint32_t g10(StructS *S, StructS2 *S2, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i16 4, i16* %{{.*}}, align 2, !tbaa !5
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
// PATH: store i16 4, i16* %{{.*}}, align 2, !tbaa [[TAG_S2_f16:!.*]]
S->f32 = 1;
S2->f16 = 4;
return S->f32;
}
uint32_t g11(StructC *C, StructD *D, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_C_b_a_f32:!.*]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_D_b_a_f32:!.*]]
C->b.a.f32 = 1;
D->b.a.f32 = 4;
return C->b.a.f32;
}
uint32_t g12(StructC *C, StructD *D, uint64_t count) {
// CHECK: define i32 @{{.*}}(
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa !4
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa !4
// TODO: differentiate the two accesses.
// PATH: define i32 @{{.*}}(
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32]]
StructB *b1 = &(C->b);
StructB *b2 = &(D->b);
// b1, b2 have different context.
b1->a.f32 = 1;
b2->a.f32 = 4;
return b1->a.f32;
}
// Make sure that zero-length bitfield works.
#define ATTR __attribute__ ((ms_struct))
struct five {
char a;
int :0; /* ignored; prior field is not a bitfield. */
char b;
char c;
} ATTR;
char g13(struct five *a, struct five *b) {
return a->b;
// CHECK: define signext i8 @{{.*}}(
// CHECK: load i8* %{{.*}}, align 1, !tbaa !1
// PATH: define signext i8 @{{.*}}(
// PATH: load i8* %{{.*}}, align 1, !tbaa [[TAG_five_b:!.*]]
}
struct six {
char a;
int :0;
char b;
char c;
};
char g14(struct six *a, struct six *b) {
// CHECK: define signext i8 @{{.*}}(
// CHECK: load i8* %{{.*}}, align 1, !tbaa !1
// PATH: define signext i8 @{{.*}}(
// PATH: load i8* %{{.*}}, align 1, !tbaa [[TAG_six_b:!.*]]
return a->b;
}
// CHECK: !1 = metadata !{metadata !"omnipotent char", metadata !2}
// CHECK: !2 = metadata !{metadata !"Simple C/C++ TBAA"}
// CHECK: !4 = metadata !{metadata !"int", metadata !1}
// CHECK: !5 = metadata !{metadata !"short", metadata !1}
// PATH: [[TYPE_CHAR:!.*]] = metadata !{metadata !"omnipotent char", metadata !3
// PATH: [[TAG_i32]] = metadata !{metadata [[TYPE_INT:!.*]], metadata [[TYPE_INT]], i64 0}
// PATH: [[TYPE_INT]] = metadata !{metadata !"int", metadata [[TYPE_CHAR]]
// PATH: [[TAG_A_f32]] = metadata !{metadata [[TYPE_A:!.*]], metadata [[TYPE_INT]], i64 4}
// PATH: [[TYPE_A]] = metadata !{metadata !"_ZTS7StructA", metadata [[TYPE_SHORT:!.*]], i64 0, metadata [[TYPE_INT]], i64 4, metadata [[TYPE_SHORT]], i64 8, metadata [[TYPE_INT]], i64 12}
// PATH: [[TYPE_SHORT:!.*]] = metadata !{metadata !"short", metadata [[TYPE_CHAR]]
// PATH: [[TAG_A_f16]] = metadata !{metadata [[TYPE_A]], metadata [[TYPE_SHORT]], i64 0}
// PATH: [[TAG_B_a_f32]] = metadata !{metadata [[TYPE_B:!.*]], metadata [[TYPE_INT]], i64 8}
// PATH: [[TYPE_B]] = metadata !{metadata !"_ZTS7StructB", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_A]], i64 4, metadata [[TYPE_INT]], i64 20}
// PATH: [[TAG_B_a_f16]] = metadata !{metadata [[TYPE_B]], metadata [[TYPE_SHORT]], i64 4}
// PATH: [[TAG_B_f32]] = metadata !{metadata [[TYPE_B]], metadata [[TYPE_INT]], i64 20}
// PATH: [[TAG_B_a_f32_2]] = metadata !{metadata [[TYPE_B]], metadata [[TYPE_INT]], i64 16}
// PATH: [[TAG_S_f32]] = metadata !{metadata [[TYPE_S:!.*]], metadata [[TYPE_INT]], i64 4}
// PATH: [[TYPE_S]] = metadata !{metadata !"_ZTS7StructS", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_INT]], i64 4}
// PATH: [[TAG_S_f16]] = metadata !{metadata [[TYPE_S]], metadata [[TYPE_SHORT]], i64 0}
// PATH: [[TAG_S2_f32]] = metadata !{metadata [[TYPE_S2:!.*]], metadata [[TYPE_INT]], i64 4}
// PATH: [[TYPE_S2]] = metadata !{metadata !"_ZTS8StructS2", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_INT]], i64 4}
// PATH: [[TAG_S2_f16]] = metadata !{metadata [[TYPE_S2]], metadata [[TYPE_SHORT]], i64 0}
// PATH: [[TAG_C_b_a_f32]] = metadata !{metadata [[TYPE_C:!.*]], metadata [[TYPE_INT]], i64 12}
// PATH: [[TYPE_C]] = metadata !{metadata !"_ZTS7StructC", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_B]], i64 4, metadata [[TYPE_INT]], i64 28}
// PATH: [[TAG_D_b_a_f32]] = metadata !{metadata [[TYPE_D:!.*]], metadata [[TYPE_INT]], i64 12}
// PATH: [[TYPE_D]] = metadata !{metadata !"_ZTS7StructD", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_B]], i64 4, metadata [[TYPE_INT]], i64 28, metadata [[TYPE_CHAR]], i64 32}
// PATH: [[TAG_five_b]] = metadata !{metadata [[TYPE_five:!.*]], metadata [[TYPE_CHAR]], i64 1}
// PATH: [[TYPE_five]] = metadata !{metadata !"_ZTS4five", metadata [[TYPE_CHAR]], i64 0, metadata [[TYPE_CHAR]], i64 1, metadata [[TYPE_CHAR]], i64 2}
// PATH: [[TAG_six_b]] = metadata !{metadata [[TYPE_six:!.*]], metadata [[TYPE_CHAR]], i64 4}
// PATH: [[TYPE_six]] = metadata !{metadata !"_ZTS3six", metadata [[TYPE_CHAR]], i64 0, metadata [[TYPE_INT]], i64 4, metadata [[TYPE_CHAR]], i64 4, metadata [[TYPE_CHAR]], i64 5}
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