c487614bc0
Revision r178818 added tests for TBAA but was missing negative tests to ensure that TBAA markers are not emitted when TBAA is off. Differential Revision: http://reviews.llvm.org/D21295 llvm-svn: 274610
277 lines
10 KiB
C++
277 lines
10 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -no-struct-path-tbaa -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=PATH
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -O0 -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=NO-TBAA
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -relaxed-aliasing -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=NO-TBAA
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// Test TBAA metadata generated by front-end.
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//
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// NO-TBAA-NOT: !tbaa
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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typedef unsigned long long uint64_t;
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typedef struct
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{
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uint16_t f16;
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uint32_t f32;
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uint16_t f16_2;
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uint32_t f32_2;
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} StructA;
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typedef struct
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{
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uint16_t f16;
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StructA a;
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uint32_t f32;
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} StructB;
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typedef struct
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{
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uint16_t f16;
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StructB b;
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uint32_t f32;
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} StructC;
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typedef struct
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{
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uint16_t f16;
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StructB b;
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uint32_t f32;
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uint8_t f8;
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} StructD;
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typedef struct
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{
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uint16_t f16;
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uint32_t f32;
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} StructS;
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typedef struct
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{
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uint16_t f16;
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uint32_t f32;
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} StructS2;
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uint32_t g(uint32_t *s, StructA *A, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z1g
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32:!.*]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z1g
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32:!.*]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32:!.*]]
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*s = 1;
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A->f32 = 4;
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return *s;
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}
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uint32_t g2(uint32_t *s, StructA *A, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g2
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16:!.*]]
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// PATH-LABEL: define i32 @_Z2g2
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_A_f16:!.*]]
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*s = 1;
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A->f16 = 4;
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return *s;
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}
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uint32_t g3(StructA *A, StructB *B, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g3
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z2g3
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32:!.*]]
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A->f32 = 1;
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B->a.f32 = 4;
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return A->f32;
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}
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uint32_t g4(StructA *A, StructB *B, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g4
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16]]
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// PATH-LABEL: define i32 @_Z2g4
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
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// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_B_a_f16:!.*]]
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A->f32 = 1;
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B->a.f16 = 4;
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return A->f32;
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}
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uint32_t g5(StructA *A, StructB *B, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g5
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z2g5
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_f32:!.*]]
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A->f32 = 1;
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B->f32 = 4;
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return A->f32;
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}
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uint32_t g6(StructA *A, StructB *B, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g6
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z2g6
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32_2:!.*]]
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A->f32 = 1;
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B->a.f32_2 = 4;
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return A->f32;
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}
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uint32_t g7(StructA *A, StructS *S, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g7
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z2g7
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32:!.*]]
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A->f32 = 1;
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S->f32 = 4;
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return A->f32;
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}
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uint32_t g8(StructA *A, StructS *S, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g8
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16]]
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// PATH-LABEL: define i32 @_Z2g8
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
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// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_S_f16:!.*]]
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A->f32 = 1;
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S->f16 = 4;
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return A->f32;
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}
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uint32_t g9(StructS *S, StructS2 *S2, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z2g9
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z2g9
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S2_f32:!.*]]
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S->f32 = 1;
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S2->f32 = 4;
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return S->f32;
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}
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uint32_t g10(StructS *S, StructS2 *S2, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z3g10
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16]]
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// PATH-LABEL: define i32 @_Z3g10
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
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// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_S2_f16:!.*]]
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S->f32 = 1;
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S2->f16 = 4;
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return S->f32;
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}
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uint32_t g11(StructC *C, StructD *D, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z3g11
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z3g11
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_C_b_a_f32:!.*]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_D_b_a_f32:!.*]]
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C->b.a.f32 = 1;
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D->b.a.f32 = 4;
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return C->b.a.f32;
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}
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uint32_t g12(StructC *C, StructD *D, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z3g12
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// TODO: differentiate the two accesses.
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// PATH-LABEL: define i32 @_Z3g12
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32]]
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StructB *b1 = &(C->b);
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StructB *b2 = &(D->b);
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// b1, b2 have different context.
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b1->a.f32 = 1;
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b2->a.f32 = 4;
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return b1->a.f32;
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}
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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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char g13(struct five *a, struct five *b) {
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return a->b;
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// CHECK-LABEL: define signext i8 @_Z3g13
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// CHECK: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_char:!.*]]
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// PATH-LABEL: define signext i8 @_Z3g13
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// PATH: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_five_b:!.*]]
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}
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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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char g14(struct six *a, struct six *b) {
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// CHECK-LABEL: define signext i8 @_Z3g14
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// CHECK: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_char]]
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// PATH-LABEL: define signext i8 @_Z3g14
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// PATH: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_six_b:!.*]]
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return a->b;
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}
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// Types that differ only by name may alias.
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typedef StructS StructS3;
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uint32_t g15(StructS *S, StructS3 *S3, uint64_t count) {
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// CHECK-LABEL: define i32 @_Z3g15
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// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
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// PATH-LABEL: define i32 @_Z3g15
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// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
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// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
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S->f32 = 1;
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S3->f32 = 4;
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return S->f32;
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}
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// CHECK: [[TYPE_char:!.*]] = !{!"omnipotent char", [[TAG_cxx_tbaa:!.*]],
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// CHECK: [[TAG_cxx_tbaa]] = !{!"Simple C++ TBAA"}
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// CHECK: [[TAG_i32]] = !{[[TYPE_i32:!.*]], [[TYPE_i32]], i64 0}
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// CHECK: [[TYPE_i32]] = !{!"int", [[TYPE_char]],
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// CHECK: [[TAG_i16]] = !{[[TYPE_i16:!.*]], [[TYPE_i16]], i64 0}
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// CHECK: [[TYPE_i16]] = !{!"short", [[TYPE_char]],
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// CHECK: [[TAG_char]] = !{[[TYPE_char]], [[TYPE_char]], i64 0}
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// PATH: [[TYPE_CHAR:!.*]] = !{!"omnipotent char", !
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// PATH: [[TAG_i32]] = !{[[TYPE_INT:!.*]], [[TYPE_INT]], i64 0}
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// PATH: [[TYPE_INT]] = !{!"int", [[TYPE_CHAR]]
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// PATH: [[TAG_A_f32]] = !{[[TYPE_A:!.*]], [[TYPE_INT]], i64 4}
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// PATH: [[TYPE_A]] = !{!"_ZTS7StructA", [[TYPE_SHORT:!.*]], i64 0, [[TYPE_INT]], i64 4, [[TYPE_SHORT]], i64 8, [[TYPE_INT]], i64 12}
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// PATH: [[TYPE_SHORT:!.*]] = !{!"short", [[TYPE_CHAR]]
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// PATH: [[TAG_A_f16]] = !{[[TYPE_A]], [[TYPE_SHORT]], i64 0}
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// PATH: [[TAG_B_a_f32]] = !{[[TYPE_B:!.*]], [[TYPE_INT]], i64 8}
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// PATH: [[TYPE_B]] = !{!"_ZTS7StructB", [[TYPE_SHORT]], i64 0, [[TYPE_A]], i64 4, [[TYPE_INT]], i64 20}
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// PATH: [[TAG_B_a_f16]] = !{[[TYPE_B]], [[TYPE_SHORT]], i64 4}
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// PATH: [[TAG_B_f32]] = !{[[TYPE_B]], [[TYPE_INT]], i64 20}
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// PATH: [[TAG_B_a_f32_2]] = !{[[TYPE_B]], [[TYPE_INT]], i64 16}
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// PATH: [[TAG_S_f32]] = !{[[TYPE_S:!.*]], [[TYPE_INT]], i64 4}
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// PATH: [[TYPE_S]] = !{!"_ZTS7StructS", [[TYPE_SHORT]], i64 0, [[TYPE_INT]], i64 4}
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// PATH: [[TAG_S_f16]] = !{[[TYPE_S]], [[TYPE_SHORT]], i64 0}
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// PATH: [[TAG_S2_f32]] = !{[[TYPE_S2:!.*]], [[TYPE_INT]], i64 4}
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// PATH: [[TYPE_S2]] = !{!"_ZTS8StructS2", [[TYPE_SHORT]], i64 0, [[TYPE_INT]], i64 4}
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// PATH: [[TAG_S2_f16]] = !{[[TYPE_S2]], [[TYPE_SHORT]], i64 0}
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// PATH: [[TAG_C_b_a_f32]] = !{[[TYPE_C:!.*]], [[TYPE_INT]], i64 12}
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// PATH: [[TYPE_C]] = !{!"_ZTS7StructC", [[TYPE_SHORT]], i64 0, [[TYPE_B]], i64 4, [[TYPE_INT]], i64 28}
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// PATH: [[TAG_D_b_a_f32]] = !{[[TYPE_D:!.*]], [[TYPE_INT]], i64 12}
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// PATH: [[TYPE_D]] = !{!"_ZTS7StructD", [[TYPE_SHORT]], i64 0, [[TYPE_B]], i64 4, [[TYPE_INT]], i64 28, [[TYPE_CHAR]], i64 32}
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// PATH: [[TAG_five_b]] = !{[[TYPE_five:!.*]], [[TYPE_CHAR]], i64 1}
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// PATH: [[TYPE_five]] = !{!"_ZTS4five", [[TYPE_CHAR]], i64 0, [[TYPE_INT]], i64 1, [[TYPE_CHAR]], i64 1, [[TYPE_CHAR]], i64 2}
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// PATH: [[TAG_six_b]] = !{[[TYPE_six:!.*]], [[TYPE_CHAR]], i64 4}
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// PATH: [[TYPE_six]] = !{!"_ZTS3six", [[TYPE_CHAR]], i64 0, [[TYPE_INT]], i64 4, [[TYPE_CHAR]], i64 4, [[TYPE_CHAR]], i64 5}
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