AVX2 implementation for highbd_convolve_2d

Can be up to >10% faster with bit exact results

Change-Id: I5f169673fd2d5af96f425f00d862f3c989228d2e

av1/av1.cmake

@@ -312,6 +312,10 @@ if (CONFIG_CONVOLVE_ROUND)
       "${AOM_ROOT}/av1/common/x86/convolve_2d_avx2.c")
 
   if (CONFIG_HIGHBITDEPTH)
+    set(AOM_AV1_COMMON_INTRIN_AVX2
+        ${AOM_AV1_COMMON_INTRIN_AVX2}
+        "${AOM_ROOT}/av1/common/x86/highbd_convolve_2d_avx2.c")
+
     set(AOM_AV1_COMMON_INTRIN_SSSE3
         ${AOM_AV1_COMMON_INTRIN_SSSE3}
         "${AOM_ROOT}/av1/common/x86/highbd_convolve_2d_ssse3.c")

av1/av1_common.mk

@@ -167,6 +167,7 @@ AV1_COMMON_SRCS-$(HAVE_SSE4_1) += common/x86/convolve_2d_sse4.c
 AV1_COMMON_SRCS-$(HAVE_AVX2) += common/x86/convolve_2d_avx2.c
 ifeq ($(CONFIG_HIGHBITDEPTH),yes)
 AV1_COMMON_SRCS-$(HAVE_SSSE3) += common/x86/highbd_convolve_2d_ssse3.c
+AV1_COMMON_SRCS-$(HAVE_AVX2) += common/x86/highbd_convolve_2d_avx2.c
 endif
 endif
 

av1/common/av1_rtcd_defs.pl

@@ -608,7 +608,7 @@ if (aom_config("CONFIG_CONVOLVE_ROUND") eq "yes") {
 
   if (aom_config("CONFIG_HIGHBITDEPTH") eq "yes") {
     add_proto qw/void av1_highbd_convolve_2d/, "const uint16_t *src, int src_stride, CONV_BUF_TYPE *dst, int dst_stride, int w, int h, InterpFilterParams *filter_params_x, InterpFilterParams *filter_params_y, const int subpel_x_q4, const int subpel_y_q4, ConvolveParams *conv_params, int bd";
-    specialize qw/av1_highbd_convolve_2d ssse3/;
+    specialize qw/av1_highbd_convolve_2d ssse3 avx2/;
     add_proto qw/void av1_highbd_convolve_rounding/, "const int32_t *src, int src_stride, uint8_t *dst, int dst_stride, int w, int h, int bits, int bd";
     specialize qw/av1_highbd_convolve_rounding avx2/;
 

test/av1_convolve_2d_test.cc

@@ -48,6 +48,9 @@ TEST_P(AV1HighbdConvolve2DTest, CheckOutput) { RunCheckOutput(GET_PARAM(3)); }
 INSTANTIATE_TEST_CASE_P(SSSE3, AV1HighbdConvolve2DTest,
                         libaom_test::AV1HighbdConvolve2D::BuildParams(
                             av1_highbd_convolve_2d_ssse3));
+INSTANTIATE_TEST_CASE_P(
+    AVX2, AV1HighbdConvolve2DTest,
+    libaom_test::AV1HighbdConvolve2D::BuildParams(av1_highbd_convolve_2d_avx2));
 
 #endif