llvm-project/clang/test/CodeGen/tbaa-array.cpp
Ivan A. Kosarev f761d0e514 [CodeGen] Fix generation of TBAA info for array-to-pointer conversions
Resolves:
Fatal error: Offset not zero at the point of scalar access.
http://llvm.org/PR34992

Differential Revision: https://reviews.llvm.org/D39083

llvm-svn: 316211
2017-10-20 12:35:17 +00:00

19 lines
542 B
C++

// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s \
// RUN: -emit-llvm -o - | FileCheck %s
//
// Check that we generate correct TBAA information for accesses to array
// elements.
struct A { int i; };
struct B { A a[1]; };
int foo(B *b) {
// CHECK-LABEL: _Z3fooP1B
// CHECK: load i32, {{.*}}, !tbaa [[TAG_A_i:!.*]]
return b->a->i;
}
// CHECK-DAG: [[TAG_A_i]] = !{[[TYPE_A:!.*]], [[TYPE_int:!.*]], i64 0}
// CHECK-DAG: [[TYPE_A]] = !{!"_ZTS1A", !{{.*}}, i64 0}
// CHECK-DAG: [[TYPE_int]] = !{!"int", !{{.*}}, i64 0}