File: derived-to-base.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 (49 lines) | stat: -rw-r--r-- 777 bytes parent folder | download | duplicates (10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
struct A { 
  void f(); 
  
  int a;
};

struct B : A { 
  double b;
};

void f() {
  B b;
  
  b.f();
}

// CHECK: define %struct.B* @_Z1fP1A(%struct.A* %a) [[NUW:#[0-9]+]]
B *f(A *a) {
  // CHECK-NOT: br label
  // CHECK: ret %struct.B*
  return static_cast<B*>(a);
}

// PR5965
namespace PR5965 {

// CHECK: define %struct.A* @_ZN6PR59651fEP1B(%struct.B* %b) [[NUW]]
A *f(B* b) {
  // CHECK-NOT: br label
  // CHECK: ret %struct.A*
  return b;
}

}

// Don't crash on a derived-to-base conversion of an r-value
// aggregate.
namespace test3 {
  struct A {};
  struct B : A {};

  void foo(A a);
  void test() {
    foo(B());
  }
}

// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }