llvm-project/clang/test/CodeGenCXX/vtable-pointer-initialization.cpp
CJ Johnson 69cd776e1e [CodeGen] Apply 'nonnull' and 'dereferenceable(N)' to 'this' pointer
arguments.

* Adds 'nonnull' and 'dereferenceable(N)' to 'this' pointer arguments
* Gates 'nonnull' on -f(no-)delete-null-pointer-checks
* Introduces this-nonnull.cpp and microsoft-abi-this-nullable.cpp tests to
  explicitly test the behavior of this change
* Refactors hundreds of over-constrained clang tests to permit these
  attributes, where needed
* Updates Clang12 patch notes mentioning this change

Reviewed-by: rsmith, jdoerfert

Differential Revision: https://reviews.llvm.org/D17993
2020-11-16 17:39:17 -08:00

61 lines
1.9 KiB
C++

// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
struct Field {
Field();
~Field();
};
struct Base {
Base();
~Base();
};
struct A : Base {
A();
~A();
virtual void f();
Field field;
};
// CHECK-LABEL: define void @_ZN1AC2Ev(%struct.A* {{[^,]*}} %this) unnamed_addr
// CHECK: call void @_ZN4BaseC2Ev(
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1A, i32 0, inrange i32 0, i32 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldC1Ev(
// CHECK: ret void
A::A() { }
// CHECK-LABEL: define void @_ZN1AD2Ev(%struct.A* {{[^,]*}} %this) unnamed_addr
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1A, i32 0, inrange i32 0, i32 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldD1Ev(
// CHECK: call void @_ZN4BaseD2Ev(
// CHECK: ret void
A::~A() { }
struct B : Base {
virtual void f();
Field field;
};
void f() { B b; }
// CHECK-LABEL: define linkonce_odr void @_ZN1BC1Ev(%struct.B* {{[^,]*}} %this) unnamed_addr
// CHECK: call void @_ZN1BC2Ev(
// CHECK-LABEL: define linkonce_odr void @_ZN1BD1Ev(%struct.B* {{[^,]*}} %this) unnamed_addr
// CHECK: call void @_ZN1BD2Ev(
// CHECK-LABEL: define linkonce_odr void @_ZN1BC2Ev(%struct.B* {{[^,]*}} %this) unnamed_addr
// CHECK: call void @_ZN4BaseC2Ev(
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1B, i32 0, inrange i32 0, i32 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldC1Ev
// CHECK: ret void
// CHECK-LABEL: define linkonce_odr void @_ZN1BD2Ev(%struct.B* {{[^,]*}} %this) unnamed_addr
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1B, i32 0, inrange i32 0, i32 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldD1Ev(
// CHECK: call void @_ZN4BaseD2Ev(
// CHECK: ret void