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