Supporting widths>32 for aom_comp_mask_pred()
for AVX2, SSE3

Update the unit tests for widths>32

BUG=aomedia:2848

Change-Id: Ib5829dae3818b28a6ab2644887fa18bae78d9d44
(cherry picked from commit c05e2fc986da30639c56c3f6bb83adfd38a1a77e)

aom_dsp/x86/masked_variance_intrin_ssse3.c

diff --git a/aom_dsp/x86/masked_variance_intrin_ssse3.c b/aom_dsp/x86/masked_variance_intrin_ssse3.c
index ebf4631..8811829 100644
--- a/aom_dsp/x86/masked_variance_intrin_ssse3.c
+++ b/aom_dsp/x86/masked_variance_intrin_ssse3.c
@@ -1050,12 +1050,15 @@
       mask += (mask_stride << 1);
       i += 2;
     } while (i < height);
-  } else {  // width == 32
-    assert(width == 32);
+  } else {
     do {
-      comp_mask_pred_16_ssse3(src0, src1, mask, comp_pred);
-      comp_mask_pred_16_ssse3(src0 + 16, src1 + 16, mask + 16, comp_pred + 16);
-      comp_pred += (width);
+      for (int x = 0; x < width / 32; x++) {
+        comp_mask_pred_16_ssse3(src0 + x * 32, src1 + x * 32, mask + x * 32,
+                                comp_pred);
+        comp_mask_pred_16_ssse3(src0 + x * 32 + 16, src1 + x * 32 + 16,
+                                mask + x * 32 + 16, comp_pred + 16);
+        comp_pred += 32;
+      }
       src0 += (stride0);
       src1 += (stride1);
       mask += (mask_stride);

aom_dsp/x86/variance_avx2.c

diff --git a/aom_dsp/x86/variance_avx2.c b/aom_dsp/x86/variance_avx2.c
index 7510c38..3558070 100644
--- a/aom_dsp/x86/variance_avx2.c
+++ b/aom_dsp/x86/variance_avx2.c
@@ -395,25 +395,22 @@
       comp_pred += (16 << 2);
       i += 4;
     } while (i < height);
-  } else {  // for width == 32
+  } else {
     do {
-      const __m256i sA0 = _mm256_lddqu_si256((const __m256i *)(src0));
-      const __m256i sA1 = _mm256_lddqu_si256((const __m256i *)(src1));
-      const __m256i aA = _mm256_lddqu_si256((const __m256i *)(mask));
+      for (int x = 0; x < width / 32; x++) {
+        const __m256i sA0 =
+            _mm256_lddqu_si256((const __m256i *)(src0 + x * 32));
+        const __m256i sA1 =
+            _mm256_lddqu_si256((const __m256i *)(src1 + x * 32));
+        const __m256i aA = _mm256_lddqu_si256((const __m256i *)(mask + x * 32));
 
-      const __m256i sB0 = _mm256_lddqu_si256((const __m256i *)(src0 + stride0));
-      const __m256i sB1 = _mm256_lddqu_si256((const __m256i *)(src1 + stride1));
-      const __m256i aB =
-          _mm256_lddqu_si256((const __m256i *)(mask + mask_stride));
-
-      comp_mask_pred_line_avx2(sA0, sA1, aA, comp_pred);
-      comp_mask_pred_line_avx2(sB0, sB1, aB, comp_pred + 32);
-      comp_pred += (32 << 1);
-
-      src0 += (stride0 << 1);
-      src1 += (stride1 << 1);
-      mask += (mask_stride << 1);
-      i += 2;
+        comp_mask_pred_line_avx2(sA0, sA1, aA, comp_pred);
+        comp_pred += 32;
+      }
+      src0 += stride0;
+      src1 += stride1;
+      mask += mask_stride;
+      i++;
     } while (i < height);
   }
 }

test/comp_mask_variance_test.cc

diff --git a/test/comp_mask_variance_test.cc b/test/comp_mask_variance_test.cc
index 05d69f4..2e9ca17 100644
--- a/test/comp_mask_variance_test.cc
+++ b/test/comp_mask_variance_test.cc
@@ -37,8 +37,10 @@
 
 #if HAVE_SSSE3 || HAVE_SSE2 || HAVE_AVX2
 const BLOCK_SIZE kValidBlockSize[] = {
-  BLOCK_8X8,   BLOCK_8X16, BLOCK_8X32,  BLOCK_16X8,  BLOCK_16X16,
-  BLOCK_16X32, BLOCK_32X8, BLOCK_32X16, BLOCK_32X32,
+  BLOCK_8X8,   BLOCK_8X16,  BLOCK_8X32,   BLOCK_16X8,   BLOCK_16X16,
+  BLOCK_16X32, BLOCK_32X8,  BLOCK_32X16,  BLOCK_32X32,  BLOCK_32X64,
+  BLOCK_64X32, BLOCK_64X64, BLOCK_64X128, BLOCK_128X64, BLOCK_128X128,
+  BLOCK_8X32,  BLOCK_32X8,  BLOCK_16X64,  BLOCK_64X16
 };
 #endif
 typedef std::tuple<comp_mask_pred_func, BLOCK_SIZE> CompMaskPredParam;