| //@ compile-flags: -O -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 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) |
| } |
