shithub: libvpx

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Merge "Optimize vpx_get4x4sse_cs_msa function"

--- a/vpx_dsp/mips/variance_msa.c

+++ b/vpx_dsp/mips/variance_msa.c

@@ -489,27 +489,19 @@

 uint32_t vpx_get4x4sse_cs_msa(const uint8_t *src_ptr, int32_t src_stride,

                               const uint8_t *ref_ptr, int32_t ref_stride) {

-  uint32_t err = 0;

   uint32_t src0, src1, src2, src3;

   uint32_t ref0, ref1, ref2, ref3;

   v16i8 src = { 0 };

   v16i8 ref = { 0 };

-  v16u8 src_vec0, src_vec1;

-  v8i16 diff0, diff1;

   v4i32 err0 = { 0 };

-  v4i32 err1 = { 0 };

   LW4(src_ptr, src_stride, src0, src1, src2, src3);

   LW4(ref_ptr, ref_stride, ref0, ref1, ref2, ref3);

   INSERT_W4_SB(src0, src1, src2, src3, src);

   INSERT_W4_SB(ref0, ref1, ref2, ref3, ref);

-  ILVRL_B2_UB(src, ref, src_vec0, src_vec1);

-  HSUB_UB2_SH(src_vec0, src_vec1, diff0, diff1);

-  DPADD_SH2_SW(diff0, diff1, diff0, diff1, err0, err1);

-  err = HADD_SW_S32(err0);

-  err += HADD_SW_S32(err1);

+  CALC_MSE_B(src, ref, err0);

-  return err;

+  return HADD_SW_S32(err0);

 }

 #define VARIANCE_4Wx4H(sse, diff) VARIANCE_WxH(sse, diff, 4);