File: cfi-multiple-inheritance.cpp

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (31 lines) | stat: -rw-r--r-- 849 bytes parent folder | download | duplicates (2)
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
// Test that correct vtable ptr and type metadata are passed to llvm.type.test
// Related to Bugzilla 43390.

// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-linux -fvisibility=hidden -std=c++11 -fsanitize=cfi-nvcall -emit-llvm -o - %s | FileCheck %s

class A1 {
public:
    virtual int f1() = 0;
};

class A2 {
public:
    virtual int f2() = 0;
};


class B : public A1, public A2 {
public:
    int f2() final { return 1; }
    int f1() final { return 2; }
};

// CHECK-LABEL: define hidden noundef i32 @_Z3foov
int foo() {
    B b;
    return static_cast<A2*>(&b)->f2();
    // CHECK: [[P:%[^ ]*]] = bitcast %class.B* %b to i8**
    // CHECK: [[V:%[^ ]*]] = load i8*, i8** [[P]], align 8
    // CHECK: call i1 @llvm.type.test(i8* [[V]], metadata !"_ZTS1B")
    // CHECK: call i1 @llvm.type.test(i8* [[V]], metadata !"all-vtables")
}