| // This is test for more optimal Ord implementation for integers. |
| // See <https://github.com/rust-lang/rust/issues/63758> for more info. |
| |
| //@ revisions: llvm-pre-20 llvm-20 |
| //@ [llvm-20] min-llvm-version: 20 |
| //@ [llvm-pre-20] ignore-llvm-version: 20 - 99 |
| //@ compile-flags: -C opt-level=3 |
| |
| #![crate_type = "lib"] |
| |
| use std::cmp::Ordering; |
| |
| // CHECK-LABEL: @cmp_signed |
| #[no_mangle] |
| pub fn cmp_signed(a: i64, b: i64) -> Ordering { |
| // llvm-20: @llvm.scmp.i8.i64 |
| // llvm-pre-20: icmp slt |
| // llvm-pre-20: icmp ne |
| // llvm-pre-20: zext i1 |
| // llvm-pre-20: select i1 |
| a.cmp(&b) |
| } |
| |
| // CHECK-LABEL: @cmp_unsigned |
| #[no_mangle] |
| pub fn cmp_unsigned(a: u32, b: u32) -> Ordering { |
| // llvm-20: @llvm.ucmp.i8.i32 |
| // llvm-pre-20: icmp ult |
| // llvm-pre-20: icmp ne |
| // llvm-pre-20: zext i1 |
| // llvm-pre-20: select i1 |
| a.cmp(&b) |
| } |
