llvm-project/clang/test/CodeGenCXX/microsoft-abi-unknown-arch.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

22 lines
507 B
C++

// RUN: %clang_cc1 -emit-llvm %s -o - -triple=ppc64-windows-msvc | FileCheck %s
// The purpose of this test is to see that we do something reasonable for
// architectures where we haven't checked what MSVC does.
struct A {
A() : a(42) {}
A(const A &o) : a(o.a) {}
~A() {}
int a;
};
struct B {
A foo(A o);
};
A B::foo(A x) {
return x;
}
// CHECK-LABEL: define void @"?foo@B@@QEAA?AUA@@U2@@Z"(%struct.B* {{[^,]*}} %this, %struct.A* noalias sret(%struct.A) align 4 %agg.result, %struct.A* %x)