mirror of https://github.com/rust-lang/rust
88 lines
2.7 KiB
Rust
88 lines
2.7 KiB
Rust
//@ revisions: x86-avx2 x86-avx512
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//@ [x86-avx2] compile-flags: --target=x86_64-unknown-linux-gnu -C llvm-args=-x86-asm-syntax=intel
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//@ [x86-avx2] compile-flags: -C target-feature=+avx2
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//@ [x86-avx2] needs-llvm-components: x86
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//@ [x86-avx512] compile-flags: --target=x86_64-unknown-linux-gnu -C llvm-args=-x86-asm-syntax=intel
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//@ [x86-avx512] compile-flags: -C target-feature=+avx512f,+avx512vl,+avx512bw,+avx512dq
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//@ [x86-avx512] needs-llvm-components: x86
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//@ assembly-output: emit-asm
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//@ compile-flags: --crate-type=lib -O -C panic=abort
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#![feature(no_core, lang_items, repr_simd, intrinsics)]
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#![no_core]
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#![allow(non_camel_case_types)]
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// Because we don't have core yet.
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#[lang = "sized"]
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pub trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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impl<T: ?Sized> Copy for *mut T {}
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#[repr(simd)]
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pub struct i8x16([i8; 16]);
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#[repr(simd)]
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pub struct m8x16([i8; 16]);
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#[repr(simd)]
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pub struct f32x8([f32; 8]);
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#[repr(simd)]
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pub struct m32x8([i32; 8]);
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#[repr(simd)]
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pub struct f64x4([f64; 4]);
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#[repr(simd)]
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pub struct m64x4([i64; 4]);
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extern "rust-intrinsic" {
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fn simd_masked_store<M, P, T>(mask: M, pointer: P, values: T);
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}
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// CHECK-LABEL: store_i8x16
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#[no_mangle]
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pub unsafe extern "C" fn store_i8x16(mask: m8x16, pointer: *mut i8, value: i8x16) {
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// Since avx2 supports no masked stores for bytes, the code tests each individual bit
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// and jumps to code that extracts individual bytes to memory.
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// x86-avx2: vpsllw xmm0, xmm0, 7
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// x86-avx2-NEXT: vpmovmskb eax, xmm0
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// x86-avx2-NEXT: test al, 1
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// x86-avx2-NEXT: jne
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// x86-avx2-NEXT: test al, 2
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// x86-avx2-NEXT: jne
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// x86-avx2-DAG: vpextrb byte ptr [rdi + 1], xmm1, 1
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// x86-avx2-DAG: vpextrb byte ptr [rdi], xmm1, 0
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//
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// x86-avx512: vpsllw xmm0, xmm0, 7
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// x86-avx512-NEXT: vpmovb2m k1, xmm0
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// x86-avx512-NEXT: vmovdqu8 xmmword ptr [rdi] {k1}, xmm1
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simd_masked_store(mask, pointer, value)
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}
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// CHECK-LABEL: store_f32x8
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#[no_mangle]
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pub unsafe extern "C" fn store_f32x8(mask: m32x8, pointer: *mut f32, value: f32x8) {
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// x86-avx2: vpslld ymm0, ymm0, 31
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// x86-avx2-NEXT: vmaskmovps ymmword ptr [rdi], ymm0, ymm1
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//
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// x86-avx512: vpslld ymm0, ymm0, 31
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// x86-avx512-NEXT: vpmovd2m k1, ymm0
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// x86-avx512-NEXT: vmovups ymmword ptr [rdi] {k1}, ymm1
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simd_masked_store(mask, pointer, value)
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}
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// CHECK-LABEL: store_f64x4
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#[no_mangle]
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pub unsafe extern "C" fn store_f64x4(mask: m64x4, pointer: *mut f64, value: f64x4) {
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// x86-avx2: vpsllq ymm0, ymm0, 63
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// x86-avx2-NEXT: vmaskmovpd ymmword ptr [rdi], ymm0, ymm1
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//
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// x86-avx512: vpsllq ymm0, ymm0, 63
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// x86-avx512-NEXT: vpmovq2m k1, ymm0
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// x86-avx512-NEXT: vmovupd ymmword ptr [rdi] {k1}, ymm1
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simd_masked_store(mask, pointer, value)
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}
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