2024-02-22 13:10:29 +01:00
|
|
|
//@ assembly-output: emit-asm
|
2023-09-02 13:37:00 +02:00
|
|
|
// # zen3 previously exhibited odd vectorization
|
2024-02-22 13:10:29 +01:00
|
|
|
//@ compile-flags: --crate-type=lib -Ctarget-cpu=znver3 -O
|
|
|
|
|
//@ only-x86_64
|
|
|
|
|
//@ ignore-sgx
|
2023-09-02 13:37:00 +02:00
|
|
|
|
|
|
|
|
use std::iter;
|
|
|
|
|
|
|
|
|
|
// previously this produced a long chain of
|
|
|
|
|
// 56: vpextrb $6, %xmm0, %ecx
|
|
|
|
|
// 57: orb %cl, 22(%rsi)
|
|
|
|
|
// 58: vpextrb $7, %xmm0, %ecx
|
|
|
|
|
// 59: orb %cl, 23(%rsi)
|
|
|
|
|
// [...]
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: zip_arrays:
|
|
|
|
|
#[no_mangle]
|
|
|
|
|
pub fn zip_arrays(mut a: [u8; 32], b: [u8; 32]) -> [u8; 32] {
|
|
|
|
|
// CHECK-NOT: vpextrb
|
|
|
|
|
// CHECK-NOT: orb %cl
|
|
|
|
|
// CHECK: vorps
|
|
|
|
|
iter::zip(&mut a, b).for_each(|(a, b)| *a |= b);
|
|
|
|
|
// CHECK: retq
|
|
|
|
|
a
|
|
|
|
|
}
|
