26 lines
611 B
Rust
26 lines
611 B
Rust
|
//@ assembly-output: emit-asm
|
||
|
|
// # zen3 previously exhibited odd vectorization
|
||
|
|
//@ compile-flags: --crate-type=lib -Ctarget-cpu=znver3 -O
|
||
|
|
//@ only-x86_64
|
||
|
|
//@ ignore-sgx
|
||
|
|
|
||
|
|
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
|
||
|
|
}
|