| //@ assembly-output: emit-asm |
| //@ compile-flags: --crate-type=lib -O -C llvm-args=-x86-asm-syntax=intel |
| //@ only-x86_64 |
| //@ ignore-sgx |
| //@ ignore-apple (manipulates rsp too) |
| |
| // Depending on various codegen choices, this might end up copying |
| // a `<2 x i8>`, an `i16`, or two `i8`s. |
| // Regardless of those choices, make sure the instructions use (2-byte) words. |
| |
| // CHECK-LABEL: array_copy_2_elements: |
| #[no_mangle] |
| pub fn array_copy_2_elements(a: &[u8; 2], p: &mut [u8; 2]) { |
| // CHECK-NOT: byte |
| // CHECK-NOT: mov |
| // CHECK: mov{{.+}}, word ptr |
| // CHECK-NEXT: mov word ptr |
| // CHECK-NEXT: ret |
| *p = *a; |
| } |
