File _service:tar_scm:3ce50ffa85577140bdf088d8ee7830... of Package highway

File _service:tar_scm:3ce50ffa85577140bdf088d8ee7830b76ac2501c.patch of Package highway

From 2f1e5a23b1facc9aebc3bf71586ca226a80b0e40 Mon Sep 17 00:00:00 2001
From: John Platts <john_platts@hotmail.com>
Date: Mon, 3 Jun 2024 07:04:07 -0500
Subject: [PATCH] Made fixes to generic_ops-inl.h BitShuffle impl on big-endian

---
 hwy/ops/generic_ops-inl.h | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/hwy/ops/generic_ops-inl.h b/hwy/ops/generic_ops-inl.h
index 0cb83276ea..cd3103345f 100644
--- a/hwy/ops/generic_ops-inl.h
+++ b/hwy/ops/generic_ops-inl.h
@@ -6922,9 +6922,17 @@ HWY_API V BitShuffle(V v, VI idx) {
       static_cast<uint64_t>(0x0102040810204080u);
 #endif
 
+  const auto k7 = Set(du8, uint8_t{0x07});
+
+  auto unmasked_byte_idx = BitCast(du8, ShiftRight<3>(BitCast(d_idx_shr, idx)));
+#if HWY_IS_BIG_ENDIAN
+  // Need to invert the lower 3 bits of unmasked_byte_idx[i] on big-endian
+  // targets
+  unmasked_byte_idx = Xor(unmasked_byte_idx, k7);
+#endif  // HWY_IS_BIG_ENDIAN
+
   const auto byte_idx = BitwiseIfThenElse(
-      Set(du8, uint8_t{0x07}),
-      BitCast(du8, ShiftRight<3>(BitCast(d_idx_shr, idx))),
+      k7, unmasked_byte_idx,
       BitCast(du8, Dup128VecFromValues(du64, uint64_t{0},
                                        uint64_t{0x0808080808080808u})));
   // We want to shift right by idx & 7 to extract the desired bit in `bytes`,