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llvm-project/clang/test/CodeGenCXX/cfi-speculative-vtable.cpp

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[cfi] Do not emit bit set entry for available_externally vtables. In the Itanium ABI, vtable may be emitted speculatively as an available_externally global. Such vtable may not be present at the link time and should not have a corresponding CFI bit set entry. llvm-svn: 258596
2016-01-23 09:20:18 +08:00
// Test that we don't emit a bit set entry for a speculative (available_externally) vtable.
// This does not happen in the Microsoft ABI.
[Clang] Disable new PM for tests that use optimization level -O1, -O2 and -O3 Tests that use -O1, -O2 and -O3 would often produce different results with the new pass manager which makes these tests fail. Disable new PM explicitly for these tests. Differential Revision: https://reviews.llvm.org/D58375 llvm-svn: 362580
2019-06-05 11:17:11 +08:00
// RUN: %clang_cc1 -triple x86_64-unknown-linux -O1 -fno-experimental-new-pass-manager -fsanitize=cfi-vcall -fsanitize-trap=cfi-vcall -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-unknown-linux -O1 -fno-experimental-new-pass-manager -fsanitize=cfi-vcall -fsanitize-trap=cfi-vcall -fsanitize-cfi-cross-dso -emit-llvm -o - %s | FileCheck %s
[cfi] Do not emit bit set entry for available_externally vtables. In the Itanium ABI, vtable may be emitted speculatively as an available_externally global. Such vtable may not be present at the link time and should not have a corresponding CFI bit set entry. llvm-svn: 258596
2016-01-23 09:20:18 +08:00
class A {
public:
virtual ~A();
};
A a;
// CHECK: @_ZTV1A ={{.*}} available_externally
// CHECK-NOT: !{{.*}} = !{!{{.*}}, [4 x i8*]* @_ZTV1A, i64 16}