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[x86] Add _mm_cvtps_epi32 (cvtps2dq) function

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_mm_cvtepi32_ps has been implemented, but _mm_cvtps_epi32 is missing.
Use the implementation of _mm_cvtepi32_ps as a guide for implementing
_mm_cvtps_epi32.
This commit is contained in:
Dan Robertson 2017-09-28 12:16:52 +00:00 • committed by Andrew Gallant
parent 7e0655e92f
commit fc65913f2f
1 changed files with 18 additions and 0 deletions
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18
library/stdarch/src/x86/sse2.rs
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@ -691,6 +691,15 @@ pub unsafe fn _mm_cvtepi32_ps(a: i32x4) -> f32x4 {
cvtdq2ps(a)
}
/// Convert packed single-precision (32-bit) floating-point elements in `a`
/// to packed 32-bit integers.
#[inline(always)]
#[target_feature = "+sse2"]
#[cfg_attr(test, assert_instr(cvtps2dq))]
pub unsafe fn _mm_cvtps_epi32(a: f32x4) -> i32x4 {
cvtps2dq(a)
}
/// Return a vector whose lowest element is `a` and all higher elements are
/// `0`.
#[inline(always)]
@ -1819,6 +1828,8 @@ extern {
fn psrlq(a: i64x2, count: i64x2) -> i64x2;
#[link_name = "llvm.x86.sse2.cvtdq2ps"]
fn cvtdq2ps(a: i32x4) -> f32x4;
#[link_name = "llvm.x86.sse2.cvtps2dq"]
fn cvtps2dq(a: f32x4) -> i32x4;
#[link_name = "llvm.x86.sse2.maskmov.dqu"]
fn maskmovdqu(a: i8x16, mask: i8x16, mem_addr: *mut i8);
#[link_name = "llvm.x86.sse2.packsswb.128"]
@ -2565,6 +2576,13 @@ mod tests {
assert_eq!(r, f32x4::new(1.0, 2.0, 3.0, 4.0));
}
#[simd_test = "sse2"]
unsafe fn _mm_cvtps_epi32() {
let a = f32x4::new(1.0, 2.0, 3.0, 4.0);
let r = sse2::_mm_cvtps_epi32(a);
assert_eq!(r, i32x4::new(1, 2, 3, 4));
}
#[simd_test = "sse2"]
unsafe fn _mm_cvtsi32_si128() {
let r = sse2::_mm_cvtsi32_si128(5);