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Change predux on PowerPC for Packet4i to NOT saturate the sum of the elements (like other architectures).

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This commit is contained in:
Chip Kerchner 2024-05-08 22:39:27 +00:00
parent ff174f7926
commit 4d1d14e069
1 changed files with 5 additions and 7 deletions
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12
Eigen/src/Core/arch/AltiVec/PacketMath.h
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@ -2437,13 +2437,11 @@ EIGEN_STRONG_INLINE float predux<Packet4f>(const Packet4f& a) {
template <>
EIGEN_STRONG_INLINE int predux<Packet4i>(const Packet4i& a) {
Packet4i sum;
sum = vec_sums(a, p4i_ZERO);
#ifdef _BIG_ENDIAN
sum = vec_sld(sum, p4i_ZERO, 12);
#else
sum = vec_sld(p4i_ZERO, sum, 4);
#endif
Packet4i b, sum;
b = vec_sld(a, a, 8);
sum = a + b;
b = vec_sld(sum, sum, 4);
sum += b;
return pfirst(sum);
}