| //@ compile-flags: -Copt-level=3 -C no-prepopulate-passes -Z inline-mir | |
| //@ only-64bit (so I don't need to worry about usize) | |
| #![crate_type = "lib"] | |
| #![feature(core_intrinsics)] | |
| use std::intrinsics::ptr_metadata; | |
| // CHECK-LABEL: @thin_metadata( | |
| #[no_mangle] | |
| pub fn thin_metadata(p: *const ()) { | |
| // CHECK: start | |
| // CHECK-NEXT: ret void | |
| ptr_metadata(p) | |
| } | |
| // CHECK-LABEL: @slice_metadata( | |
| #[no_mangle] | |
| pub fn slice_metadata(p: *const [u8]) -> usize { | |
| // CHECK: start | |
| // CHECK-NEXT: ret i64 %p.1 | |
| ptr_metadata(p) | |
| } | |
| // CHECK-LABEL: @dyn_byte_offset( | |
| #[no_mangle] | |
| pub unsafe fn dyn_byte_offset( | |
| p: *const dyn std::fmt::Debug, | |
| n: usize, | |
| ) -> *const dyn std::fmt::Debug { | |
| // CHECK: %[[Q:.+]] = getelementptr inbounds{{( nuw)?}} i8, ptr %p.0, i64 %n | |
| // CHECK: %[[TEMP1:.+]] = insertvalue { ptr, ptr } poison, ptr %[[Q]], 0 | |
| // CHECK: %[[TEMP2:.+]] = insertvalue { ptr, ptr } %[[TEMP1]], ptr %p.1, 1 | |
| // CHECK: ret { ptr, ptr } %[[TEMP2]] | |
| p.byte_add(n) | |
| } |