| //@ 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() | |
| } |