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Reimplement _mm_cvtpd_ps and _mm_cvtps_pd without LLVM intrinsics

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Eduardo Sánchez Muñoz 2023-10-03 22:04:29 +02:00 • committed by Amanieu d'Antras
parent d875917e96
commit 6baf6bf473
1 changed files with 5 additions and 6 deletions
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11
library/stdarch/crates/core_arch/src/x86/sse2.rs
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@ -2240,7 +2240,9 @@ pub unsafe fn _mm_ucomineq_sd(a: __m128d, b: __m128d) -> i32 {
#[cfg_attr(test, assert_instr(cvtpd2ps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_cvtpd_ps(a: __m128d) -> __m128 {
cvtpd2ps(a)
let r = simd_cast::<_, f32x2>(a.as_f64x2());
let zero = f32x2::new(0.0, 0.0);
transmute::<f32x4, _>(simd_shuffle!(r, zero, [0, 1, 2, 3]))
}
/// Converts packed single-precision (32-bit) floating-point elements in `a` to
@ -2253,7 +2255,8 @@ pub unsafe fn _mm_cvtpd_ps(a: __m128d) -> __m128 {
#[cfg_attr(test, assert_instr(cvtps2pd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_cvtps_pd(a: __m128) -> __m128d {
cvtps2pd(a)
let a = a.as_f32x4();
transmute(simd_cast::<f32x2, f64x2>(simd_shuffle!(a, a, [0, 1])))
}
/// Converts packed double-precision (64-bit) floating-point elements in `a` to
@ -2908,10 +2911,6 @@ extern "C" {
fn ucomineqsd(a: __m128d, b: __m128d) -> i32;
#[link_name = "llvm.x86.sse2.movmsk.pd"]
fn movmskpd(a: __m128d) -> i32;
#[link_name = "llvm.x86.sse2.cvtpd2ps"]
fn cvtpd2ps(a: __m128d) -> __m128;
#[link_name = "llvm.x86.sse2.cvtps2pd"]
fn cvtps2pd(a: __m128) -> __m128d;
#[link_name = "llvm.x86.sse2.cvtpd2dq"]
fn cvtpd2dq(a: __m128d) -> i32x4;
#[link_name = "llvm.x86.sse2.cvtsd2si"]