39 lines
905 B
Rust
39 lines
905 B
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: -Copt-level=3 -Ctarget-cpu=x86-64
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#![crate_type = "lib"]
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#![feature(target_feature_11)]
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#[cfg(target_arch = "x86_64")]
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use std::arch::x86_64::*;
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// CHECK-LABEL: @with_avx
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#[no_mangle]
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#[cfg(target_arch = "x86_64")]
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#[target_feature(enable = "avx")]
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fn with_avx(x: __m256) -> __m256 {
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// CHECK: fadd
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let add = {
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#[inline(always)]
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|x, y| unsafe { _mm256_add_ps(x, y) }
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};
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add(x, x)
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}
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// CHECK-LABEL: @without_avx
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#[no_mangle]
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#[cfg(target_arch = "x86_64")]
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unsafe fn without_avx(x: __m256) -> __m256 {
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// CHECK-NOT: fadd
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let add = {
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#[inline(always)]
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|x, y| unsafe { _mm256_add_ps(x, y) }
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};
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add(x, x)
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}
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// Don't allow the above CHECK-NOT to accidentally match a commit hash in the
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// compiler version.
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// CHECK-LABEL: rustc version
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