| //@ revisions: WIN LIN |
| //@ [WIN] only-windows |
| //@ [LIN] only-linux |
| //@ assembly-output: emit-asm |
| //@ compile-flags: --crate-type=lib -O -C llvm-args=-x86-asm-syntax=intel |
| //@ only-x86_64 |
| //@ ignore-sgx |
| |
| use std::cmp::Ordering; |
| |
| // CHECK-lABEL: ordering_eq: |
| #[no_mangle] |
| pub fn ordering_eq(l: Option<Ordering>, r: Option<Ordering>) -> bool { |
| // Linux (System V): first two arguments are rdi then rsi |
| // Windows: first two arguments are rcx then rdx |
| // Both use rax for the return value. |
| |
| // CHECK-NOT: mov |
| // CHECK-NOT: test |
| // CHECK-NOT: cmp |
| |
| // LIN: cmp dil, sil |
| // WIN: cmp cl, dl |
| // CHECK-NEXT: sete al |
| // CHECK-NEXT: ret |
| l == r |
| } |
