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add expand128() implementation for NEON

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Konstantinos Margaritis
2021-01-15 17:33:41 +02:00
committed by Konstantinos Margaritis
parent dccb0db1cb
commit 0b14b24616
5 changed files with 48 additions and 7 deletions
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12
src/util/arch/common/bitutils.h
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@@ -301,6 +301,18 @@ u64a expand64_impl_c(u64a x, u64a m) {
return x & m0; // clear out extraneous bits*/
}
static really_inline
m128 expand128_impl_c(m128 xvec, m128 mvec) {
u64a ALIGN_ATTR(16) x[2];
u64a ALIGN_ATTR(16) m[2];
store128(x, xvec);
store128(m, mvec);
expand64_impl_c(x[0], m[0]);
expand64_impl_c(x[1], m[1]);
return xvec;
}
/* returns the first set bit after begin (if not ~0U). If no bit is set after
* begin returns ~0U