diff options
Diffstat (limited to 'tests/codegen/clone-shims.rs')
| -rw-r--r-- | tests/codegen/clone-shims.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/codegen/clone-shims.rs b/tests/codegen/clone-shims.rs new file mode 100644 index 00000000000..06c959f9ee7 --- /dev/null +++ b/tests/codegen/clone-shims.rs @@ -0,0 +1,15 @@ +// Clone shims for aggregates are generated by just calling the Clone shims for all their members. +// Those calls generate a lot of unnecessary IR if the members are Copy. This test ensures that we +// optimize away those inner calls without needing to inline them. + +//@ compile-flags: -Cno-prepopulate-passes -Csymbol-mangling-version=v0 -Zinline-mir=no +#![crate_type = "lib"] + +pub type Test = (i32, i32, *const i32); +pub static TEST: fn(&Test) -> Test = <Test as core::clone::Clone>::clone; + +// CHECK-NOT: call <i32 as core::clone::Clone>::clone +// CHECK-NOT: call <*const i32 as core::clone::Clone>::clone +// CHECK: ; <(i32, i32, *const i32) as core::clone::Clone>::clone +// CHECK-NOT: call <i32 as core::clone::Clone>::clone +// CHECK-NOT: call <*const i32 as core::clone::Clone>::clone |