mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 03:25:55 +00:00
32 lines
729 B
Rust
32 lines
729 B
Rust
//@ 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()
|
|
}
|