mirror of https://github.com/rust-lang/rust
45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
//@ only-x86_64
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// Set the base cpu explicitly, in case the default has been changed.
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//@ compile-flags: -C target-cpu=x86-64
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#![feature(avx512_target_feature)]
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use std::arch::asm;
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#[target_feature(enable = "avx")]
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unsafe fn foo() {
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let mut x = 1;
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let y = 2;
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asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
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assert_eq!(x, 3);
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}
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unsafe fn bar() {
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let mut x = 1;
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let y = 2;
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asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
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//~^ ERROR: register class `ymm_reg` requires the `avx` target feature
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//~| ERROR: register class `ymm_reg` requires the `avx` target feature
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//~| ERROR: register class `ymm_reg` requires the `avx` target feature
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assert_eq!(x, 3);
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}
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#[target_feature(enable = "avx512bw")]
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unsafe fn baz() {
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let x = 1;
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asm!("/* {0} */", in(kreg) x);
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}
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unsafe fn baz2() {
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let x = 1;
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asm!("/* {0} */", in(kreg) x);
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//~^ ERROR: register class `kreg` requires at least one of the following target features: avx512bw, avx512f
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}
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fn main() {
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unsafe {
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foo();
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bar();
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}
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}
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