| //@ compile-flags: -O |
| //@ only-64bit (because the LLVM type of i64 for usize shows up) |
| |
| #![crate_type = "lib"] |
| #![feature(slice_as_chunks)] |
| |
| // CHECK-LABEL: @chunks4 |
| #[no_mangle] |
| pub fn chunks4(x: &[u8]) -> &[[u8; 4]] { |
| // CHECK-NEXT: start: |
| // CHECK-NEXT: lshr i64 %x.1, 2 |
| // CHECK-NOT: shl |
| // CHECK-NOT: mul |
| // CHECK-NOT: udiv |
| // CHECK-NOT: urem |
| // CHECK: ret |
| x.as_chunks().0 |
| } |
| |
| // CHECK-LABEL: @chunks4_with_remainder |
| #[no_mangle] |
| pub fn chunks4_with_remainder(x: &[u8]) -> (&[[u8; 4]], &[u8]) { |
| // CHECK-DAG: and i64 %x.1, -4 |
| // CHECK-DAG: and i64 %x.1, 3 |
| // CHECK-DAG: lshr |
| // CHECK-NOT: mul |
| // CHECK-NOT: udiv |
| // CHECK-NOT: urem |
| // CHECK: ret |
| x.as_chunks() |
| } |
