llvm-project/clang/test/CodeGenCXX/no-unique-address-2.cpp
Nikita Popov 532dc62b90 [OpaquePtrs][Clang] Add -no-opaque-pointers to tests (NFC)
This adds -no-opaque-pointers to clang tests whose output will
change when opaque pointers are enabled by default. This is
intended to be part of the migration approach described in
https://discourse.llvm.org/t/enabling-opaque-pointers-by-default/61322/9.

The patch has been produced by replacing %clang_cc1 with
%clang_cc1 -no-opaque-pointers for tests that fail with opaque
pointers enabled. Worth noting that this doesn't cover all tests,
there's a remaining ~40 tests not using %clang_cc1 that will need
a followup change.

Differential Revision: https://reviews.llvm.org/D123115
2022-04-07 12:09:47 +02:00

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// RUN: %clang_cc1 -no-opaque-pointers -std=c++2a %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s
struct TriviallyCopyable {};
struct NonTriviallyCopyable {
NonTriviallyCopyable() = default;
NonTriviallyCopyable(const NonTriviallyCopyable&) = default;
NonTriviallyCopyable(NonTriviallyCopyable &&) {}
};
struct Foo {
int i;
[[no_unique_address]] TriviallyCopyable m;
[[no_unique_address]] NonTriviallyCopyable n;
};
void call() {
Foo foo;
Foo foo2(static_cast<Foo&&>(foo));
}
// The memcpy call should copy exact 4 bytes for member 'int i'
// CHECK: define {{.*}} void @_ZN3FooC2EOS_
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.+}}, i8* {{.+}}, i64 4, i1 false)
// CHECK: call void @_ZN20NonTriviallyCopyableC2EOS_