File: tbaa-cast.cpp

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (23 lines) | stat: -rw-r--r-- 581 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
// 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 lvalues constructed
// with use of casts.

struct V {
  unsigned n;
};

struct S {
  char bytes[4];
};

void foo(S *p) {
// CHECK-LABEL: _Z3fooP1S
// CHECK: store i32 5, {{.*}}, !tbaa [[TAG_V_n:!.*]]
  ((V*)p->bytes)->n = 5;
}

// CHECK-DAG: [[TAG_V_n]] = !{[[TYPE_V:!.*]], [[TYPE_int:!.*]], i64 0}
// CHECK-DAG: [[TYPE_V]] = !{!"_ZTS1V", !{{.*}}, i64 0}
// CHECK-DAG: [[TYPE_int]] = !{!"int", !{{.*}}, i64 0}