shithub: libvpx

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ppc: Add get_mb_ss_vsx

Change-Id: I1b54a7a5bb642e4b836d786ea1ae506eed025e3f

--- a/test/variance_test.cc

+++ b/test/variance_test.cc

@@ -1340,6 +1340,9 @@

 #endif  // HAVE_MSA

 #if HAVE_VSX

+INSTANTIATE_TEST_CASE_P(VSX, SumOfSquaresTest,

+                        ::testing::Values(vpx_get_mb_ss_vsx));

+

 INSTANTIATE_TEST_CASE_P(VSX, VpxSseTest,

                         ::testing::Values(SseParams(2, 2,

                                                     &vpx_get4x4sse_cs_vsx)));

--- a/vpx_dsp/ppc/variance_vsx.c

+++ b/vpx_dsp/ppc/variance_vsx.c

@@ -38,6 +38,23 @@

   return distortion;

 }

+// TODO(lu_zero): Unroll

+uint32_t vpx_get_mb_ss_vsx(const int16_t *a) {

+  unsigned int i, sum = 0;

+  int32x4_t s = vec_splat_s32(0);

+

+  for (i = 0; i < 256; i += 8) {

+    const int16x8_t v = vec_vsx_ld(0, a + i);

+    s = vec_msum(v, v, s);

+  }

+

+  s = vec_splat(vec_sums(s, vec_splat_s32(0)), 3);

+

+  vec_ste((uint32x4_t)s, 0, &sum);

+

+  return sum;

+}

+

 void vpx_comp_avg_pred_vsx(uint8_t *comp_pred, const uint8_t *pred, int width,

                            int height, const uint8_t *ref, int ref_stride) {

   int i, j;

--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl

+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl

@@ -1171,7 +1171,7 @@

   specialize qw/vpx_mse8x8 sse2 msa/;

 add_proto qw/unsigned int vpx_get_mb_ss/, "const int16_t *";

-  specialize qw/vpx_get_mb_ss sse2 msa/;

+  specialize qw/vpx_get_mb_ss sse2 msa vsx/;

 add_proto qw/unsigned int vpx_get4x4sse_cs/, "const unsigned char *src_ptr, int source_stride, const unsigned char *ref_ptr, int  ref_stride";

   specialize qw/vpx_get4x4sse_cs neon msa vsx/;