diff clang/test/CodeGenCXX/cfi-multiple-inheritance.cpp @ 150:1d019706d866

LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900 (2020-02-13)
parents
children c4bab56944e8
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/CodeGenCXX/cfi-multiple-inheritance.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,31 @@
+// Test that correct vtable ptr and type metadata are passed to llvm.type.test
+// Related to Bugzilla 43390.
+
+// RUN: %clang_cc1 -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 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")
+}