| // RUN: %clangxx -target x86_64-unknown-unknown -g \ |
| // RUN: %s -emit-llvm -S -o - | FileCheck %s |
| |
| // RUN: %clangxx -target x86_64-unknown-unknown -g \ |
| // RUN: -fno-elide-constructors %s -emit-llvm -S -o - | \ |
| // RUN: FileCheck %s -check-prefix=NOELIDE |
| |
| struct Foo { |
| Foo() = default; |
| Foo(Foo &&other) { x = other.x; } |
| int x; |
| }; |
| void some_function(int); |
| Foo getFoo() { |
| Foo foo; |
| foo.x = 41; |
| some_function(foo.x); |
| return foo; |
| } |
| |
| int main() { |
| Foo bar = getFoo(); |
| return bar.x; |
| } |
| |
| // Check that NRVO variables are stored as a pointer with deref if they are |
| // stored in the return register. |
| |
| // CHECK: %[[RESULT:.*]] = alloca i8*, align 8 |
| // CHECK: call void @llvm.dbg.declare(metadata i8** %[[RESULT]], |
| // CHECK-SAME: metadata !DIExpression(DW_OP_deref) |
| |
| // NOELIDE: %[[FOO:.*]] = alloca %struct.Foo, align 4 |
| // NOELIDE: call void @llvm.dbg.declare(metadata %struct.Foo* %[[FOO]], |
| // NOELIDE-SAME: metadata !DIExpression() |
