tree a68424f79c857918292a17214f1896e1c4caa451
parent cf17ee1d3a7ec78dbd922b3eb3944ac49cb78737
author Florian Hahn <flo@fhahn.com> 1745835396 +0100
committer GitHub <noreply@github.com> 1745835396 +0100
gpgsig -----BEGIN PGP SIGNATURE-----
 
 wsFcBAABCAAQBQJoD1WECRC1aQ7uu5UhlAAArjUQAHsowja0wYGq2tXN8iMyn14l
 sBdMyVtLVw+7tXAABSl+QkTuY7jszXHNw6Oke4Fvx8Cfwpg7eZPA08KuYbCqwDFX
 +NrdhQOy5dkkAZhT6gAWQRV2f3rILC4pYgxV6vUwmIkP2HtjKxfKFZapBj7Dkkcn
 LZ4F2Q8MWTZAiQzOlqwwG1hFeKc6GTm+kYouBMuYs0iO5M5oCYnh/ZX9e54bWsj5
 v4sPvofkBNu1GNKbSj2LiH7QbyLYuacWJSyvAjymdtJ484JWbM+WcohgYnhvd4O7
 b7seEBr3UAVRTwyRLNOaqcyI+33UYIpv7/Kk92f43sHulupfDxlRrV9wDqFIo9Ny
 BbiFjZm6/dxoJfvuMIePfl/Yx0pXVGwUxieoUrPohP9GP0JSRCZJvVgfMRLJsncG
 F6ckQdzoGZVW+UzhvT0IWzNaJ91atcFH2YMhzYRxiM4ueiUjb+Vu2iRiJ4RdSF0C
 3m3CP4w4A7RJdMFQNzdhlPaPxjw9ZlSpqiduhMkqJfYKnZsUrjaYTulPhX7A8+bV
 Ss7POAtX4QRbiq+KWKCafb6TMz5CC7n7n/bc6d6erASZRn/TNsSV1gVtLkuQdIL0
 GIM9EHTk88uFASOtKu4+ESho39tnb8PTufnGVHNIwtaDqKZJJYuCLYWbfVb3Gq/z
 xStrkpQIrZJ05vpLskUM
 =MiC5
 -----END PGP SIGNATURE-----
 

[IVDescriptors] Support reductions with minimumnum/maximumnum. (#137335)

Add a new reduction recurrence kind for reductions with
minimumnum/maximumnum. Such reductions can be vectorized without
nsz/nnans, same as reductions with maximum/minimum intrinsics.

Note that a new reduction kind is needed to make sure partial reductions
are also combined with minimumnum/maximumnum.

Note that the final reduction to a scalar value is performed with
vector.reduce.fmin/fmax. This should be fine, as the results of the
partial reductions with maximumnum/minimumnum silences any sNaNs.

In-loop and reductions in SLP are not supported yet, as there's no
reduction version of maximumnum/minimumnum yet and fmax may be
incorrect.

PR: https://github.com/llvm/llvm-project/pull/137335