| // Test that the `fn_ret_thunk_extern` function attribute is (not) emitted when |
| // the `-Zfunction-return={keep,thunk-extern}` flag is (not) set. |
| |
| //@ add-core-stubs |
| //@ revisions: unset keep thunk-extern keep-thunk-extern thunk-extern-keep |
| //@ needs-llvm-components: x86 |
| //@ compile-flags: --target x86_64-unknown-linux-gnu |
| //@ [keep] compile-flags: -Zfunction-return=keep |
| //@ [thunk-extern] compile-flags: -Zfunction-return=thunk-extern |
| //@ [keep-thunk-extern] compile-flags: -Zfunction-return=keep -Zfunction-return=thunk-extern |
| //@ [thunk-extern-keep] compile-flags: -Zfunction-return=thunk-extern -Zfunction-return=keep |
| |
| #![crate_type = "lib"] |
| #![feature(no_core, lang_items)] |
| #![no_core] |
| |
| extern crate minicore; |
| use minicore::*; |
| |
| #[no_mangle] |
| pub fn foo() { |
| // CHECK: @foo() unnamed_addr #0 |
| |
| // unset-NOT: fn_ret_thunk_extern |
| // keep-NOT: fn_ret_thunk_extern |
| // thunk-extern: attributes #0 = { {{.*}}fn_ret_thunk_extern{{.*}} } |
| // keep-thunk-extern: attributes #0 = { {{.*}}fn_ret_thunk_extern{{.*}} } |
| // thunk-extern-keep-NOT: fn_ret_thunk_extern |
| } |
| |
| // unset-NOT: !{{[0-9]+}} = !{i32 4, !"function_return_thunk_extern", i32 1} |
| // keep-NOT: !{{[0-9]+}} = !{i32 4, !"function_return_thunk_extern", i32 1} |
| // thunk-extern: !{{[0-9]+}} = !{i32 4, !"function_return_thunk_extern", i32 1} |
| // keep-thunk-extern: !{{[0-9]+}} = !{i32 4, !"function_return_thunk_extern", i32 1} |
| // thunk-extern-keep-NOT: !{{[0-9]+}} = !{i32 4, !"function_return_thunk_extern", i32 1} |
