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Add vec_cntlz

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Luca Barbato 2024-02-06 16:58:28 +00:00 • committed by Amanieu d'Antras
parent 7f510b818f
commit 6b6fb15fbb
1 changed files with 55 additions and 0 deletions
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55
library/stdarch/crates/core_arch/src/powerpc/altivec.rs
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@ -377,6 +377,13 @@ extern "C" {
fn vslv(a: vector_unsigned_char, b: vector_unsigned_char) -> vector_unsigned_char;
#[link_name = "llvm.ppc.altivec.srv"]
fn vsrv(a: vector_unsigned_char, b: vector_unsigned_char) -> vector_unsigned_char;
#[link_name = "llvm.ctlz.v16i8"]
fn vclzb(a: vector_signed_char) -> vector_signed_char;
#[link_name = "llvm.ctlz.v8i16"]
fn vclzh(a: vector_signed_short) -> vector_signed_short;
#[link_name = "llvm.ctlz.v4i32"]
fn vclzw(a: vector_signed_int) -> vector_signed_int;
}
macro_rules! s_t_l {
@ -3090,6 +3097,35 @@ mod sealed {
}
impl_vec_shift_octect! { [VectorSro vec_sro] (vsro) }
test_impl! { vec_vcntlzb(a: vector_signed_char) -> vector_signed_char [vclzb, vclzb] }
test_impl! { vec_vcntlzh(a: vector_signed_short) -> vector_signed_short [vclzh, vclzh] }
test_impl! { vec_vcntlzw(a: vector_signed_int) -> vector_signed_int [vclzw, vclzw] }
#[unstable(feature = "stdarch_powerpc", issue = "111145")]
pub trait VectorCntlz {
unsafe fn vec_cntlz(self) -> Self;
}
macro_rules! impl_vec_cntlz {
($fun:ident ($a:ty)) => {
#[unstable(feature = "stdarch_powerpc", issue = "111145")]
impl VectorCntlz for $a {
#[inline]
#[target_feature(enable = "altivec")]
unsafe fn vec_cntlz(self) -> Self {
transmute($fun(transmute(self)))
}
}
};
}
impl_vec_cntlz! { vec_vcntlzb(vector_signed_char) }
impl_vec_cntlz! { vec_vcntlzb(vector_unsigned_char) }
impl_vec_cntlz! { vec_vcntlzh(vector_signed_short) }
impl_vec_cntlz! { vec_vcntlzh(vector_unsigned_short) }
impl_vec_cntlz! { vec_vcntlzw(vector_signed_int) }
impl_vec_cntlz! { vec_vcntlzw(vector_unsigned_int) }
}
/// Vector Merge Low
@ -4219,6 +4255,25 @@ pub unsafe fn vec_any_numeric(a: vector_float) -> bool {
vcmpgefp_p(1, a, a) != 0
}
/// Vector Count Leading Zeros
///
/// ## Purpose
/// Returns a vector containing the number of most-significant bits equal to zero of each
/// corresponding element of the source vector.
///
/// ## Result value
/// The value of each element of r is set to the number of leading zeros of the
/// corresponding element of a.
#[inline]
#[target_feature(enable = "altivec")]
#[unstable(feature = "stdarch_powerpc", issue = "111145")]
pub unsafe fn vec_cntlz<T>(a: T) -> T
where
T: sealed::VectorCntlz,
{
a.vec_cntlz()
}
/// Any Element Out of Bounds
#[inline]
#[target_feature(enable = "altivec")]