libvpx: Pull from upstream

source/libvpx/vp9/encoder/mips/msa/vp9_avg_msa.c

Index: source/libvpx/vp9/encoder/mips/msa/vp9_avg_msa.c
diff --git a/source/libvpx/vp9/encoder/mips/msa/vp9_avg_msa.c b/source/libvpx/vp9/encoder/mips/msa/vp9_avg_msa.c
new file mode 100644
index 0000000000000000000000000000000000000000..f2e8b275a6a54c37ac92e907c2b0e18bfdb7b86e
--- /dev/null
+++ b/source/libvpx/vp9/encoder/mips/msa/vp9_avg_msa.c
@@ -0,0 +1,56 @@
+/*
+ *  Copyright (c) 2015 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "./vp9_rtcd.h"
+#include "vp9/common/mips/msa/vp9_macros_msa.h"
+
+uint32_t vp9_avg_8x8_msa(const uint8_t *src, int32_t src_stride) {
+  uint32_t sum_out;
+  v16u8 src0, src1, src2, src3, src4, src5, src6, src7;
+  v8u16 sum0, sum1, sum2, sum3, sum4, sum5, sum6, sum7;
+  v4u32 sum = { 0 };
+
+  LD_UB8(src, src_stride, src0, src1, src2, src3, src4, src5, src6, src7);
+  HADD_UB4_UH(src0, src1, src2, src3, sum0, sum1, sum2, sum3);
+  HADD_UB4_UH(src4, src5, src6, src7, sum4, sum5, sum6, sum7);
+  ADD4(sum0, sum1, sum2, sum3, sum4, sum5, sum6, sum7, sum0, sum2, sum4, sum6);
+  ADD2(sum0, sum2, sum4, sum6, sum0, sum4);
+  sum0 += sum4;
+
+  sum = __msa_hadd_u_w(sum0, sum0);
+  sum0 = (v8u16)__msa_pckev_h((v8i16)sum, (v8i16)sum);
+  sum = __msa_hadd_u_w(sum0, sum0);
+  sum = (v4u32)__msa_srari_w((v4i32)sum, 6);
+  sum_out = __msa_copy_u_w((v4i32)sum, 0);
+
+  return sum_out;
+}
+
+uint32_t vp9_avg_4x4_msa(const uint8_t *src, int32_t src_stride) {
+  uint32_t sum_out;
+  uint32_t src0, src1, src2, src3;
+  v16u8 vec = { 0 };
+  v8u16 sum0;
+  v4u32 sum1;
+  v2u64 sum2;
+
+  LW4(src, src_stride, src0, src1, src2, src3);
+  INSERT_W4_UB(src0, src1, src2, src3, vec);
+
+  sum0 = __msa_hadd_u_h(vec, vec);
+  sum1 = __msa_hadd_u_w(sum0, sum0);
+  sum0 = (v8u16)__msa_pckev_h((v8i16)sum1, (v8i16)sum1);
+  sum1 = __msa_hadd_u_w(sum0, sum0);
+  sum2 = __msa_hadd_u_d(sum1, sum1);
+  sum1 = (v4u32)__msa_srari_w((v4i32)sum2, 4);
+  sum_out = __msa_copy_u_w((v4i32)sum1, 0);
+
+  return sum_out;
+}