FG8 combined test 1 (CT1): Test 1, Test 3, Test 4 and Test 11

Combined tests for FG8 context reduction activity: Tests 1,3,4 and 11

STATS_CHANGED
diff --git a/av1/common/token_cdfs.h b/av1/common/token_cdfs.h
index bf30e3c..c4725c1 100644
--- a/av1/common/token_cdfs.h
+++ b/av1/common/token_cdfs.h
@@ -1679,6 +1679,500 @@
 #endif  // CONFIG_ENTROPY_PARA
 
 #if CONFIG_ENTROPY_PARA
+#if CONFIG_EOB_PT_CTX_REDUCTION
+static const aom_cdf_prob
+    av1_default_eob_extra_cdfs[TOKEN_CDF_Q_CTXS][TX_SIZES][PLANE_TYPES]
+                              [EOB_COEF_CONTEXTS][CDF_SIZE(2)] = {
+                                {
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                },
+                                {
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                },
+                                {
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                },
+                                {
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                    {
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                        {
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                            { AOM_CDF2(16384), 0 },
+                                        },
+                                    },
+                                },
+                              };
+#else
 static const aom_cdf_prob
     av1_default_eob_extra_cdfs[TOKEN_CDF_Q_CTXS][TX_SIZES][PLANE_TYPES]
                               [EOB_COEF_CONTEXTS][CDF_SIZE(2)] = {
@@ -2171,6 +2665,7 @@
                                     },
                                 },
                               };
+#endif
 #else
 static const aom_cdf_prob
     av1_default_eob_extra_cdfs[TOKEN_CDF_Q_CTXS][TX_SIZES][PLANE_TYPES]
diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index 686dc9a..d0f60dd 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -2785,10 +2785,14 @@
     const int num_of_bits_for_this_offset =
         (shell_class == 0) ? 1 : shell_class;
     for (int i = 0; i < num_of_bits_for_this_offset; ++i) {
+#if CONFIG_CTX_MV_SHELL_OFFSET_OTHER
+      shell_cls_offset |= aom_read_bit(r, ACCT_INFO("offset")) << i;
+#else
       shell_cls_offset |=
           aom_read_symbol(r, ctx->shell_offset_other_class_cdf[0][i], 2,
                           ACCT_INFO("offset"))
           << i;
+#endif
     }
   }
 
diff --git a/av1/decoder/decodetxb.c b/av1/decoder/decodetxb.c
index 68a4b65..58ec2d6 100644
--- a/av1/decoder/decodetxb.c
+++ b/av1/decoder/decodetxb.c
@@ -526,7 +526,9 @@
 #endif
 ) {
   MACROBLOCKD *const xd = &dcb->xd;
+#if !CONFIG_EOB_PT_CTX_REDUCTION
   const PLANE_TYPE plane_type = get_plane_type(plane);
+#endif
   FRAME_CONTEXT *const ec_ctx = xd->tile_ctx;
 #if CONFIG_EOB_POS_LUMA
   const int is_inter = is_inter_block(xd->mi[0], xd->tree_type);
@@ -534,8 +536,9 @@
 #else
   const int pl_ctx = plane_type;
 #endif  // CONFIG_EOB_POS_LUMA
-
+#if !CONFIG_EOB_PT_CTX_REDUCTION
   const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size);
+#endif
   eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane];
   uint16_t *const eob = &(eob_data->eob);
   eob_info *bob_data = dcb->bob_data[plane] + dcb->txb_offset[plane];
@@ -620,10 +623,17 @@
 
   const int eob_offset_bits = av1_eob_offset_bits[eob_pt];
   if (eob_offset_bits > 0) {
+#if !CONFIG_EOB_PT_CTX_REDUCTION
     const int eob_ctx = eob_pt - 3;
+#endif
     int bit =
+#if CONFIG_EOB_PT_CTX_REDUCTION
+        aom_read_symbol(r, ec_ctx->eob_extra_cdf[0][0][0], 2,
+                        ACCT_INFO("eob_extra_cdf"));
+#else
         aom_read_symbol(r, ec_ctx->eob_extra_cdf[txs_ctx][plane_type][eob_ctx],
                         2, ACCT_INFO("eob_extra_cdf"));
+#endif
     if (bit) {
       eob_extra += (1 << (eob_offset_bits - 1));
     }
@@ -1306,11 +1316,16 @@
               ACCT_INFO("sign", "dc_sign_cdf", "plane_y_or_u"));
 #endif  // CONFIG_IMPROVEIDTX
         } else {
+#if CONFIG_BY_PASS_V_SIGN
+          sign = aom_read_literal(
+              r, 1, ACCT_INFO("sign", "v_dc_sign_cdf", "plane_v"));
+#else
           int32_t tmp_sign = 0;
           if (c < xd->eob_u) tmp_sign = xd->tmp_sign[tmp_sign_idx];
           sign =
               aom_read_symbol(r, ec_ctx->v_dc_sign_cdf[tmp_sign][dc_sign_ctx],
                               2, ACCT_INFO("sign", "v_dc_sign_cdf", "plane_v"));
+#endif
         }
         if (plane == AOM_PLANE_U) xd->tmp_sign[tmp_sign_idx] = (sign ? 2 : 1);
 #else
@@ -1318,7 +1333,7 @@
                                2, ACCT_INFO("sign", "dc_sign_cdf"));
 #endif  // CONFIG_CONTEXT_DERIVATION
       } else {
-#if CONFIG_CONTEXT_DERIVATION
+#if CONFIG_CONTEXT_DERIVATION && CONFIG_CTX_V_AC_SIGN == 0
         if (plane == AOM_PLANE_Y || plane == AOM_PLANE_U)
           sign = aom_read_bit(r, ACCT_INFO("sign", "plane_y_or_u"));
         else {
diff --git a/av1/encoder/block.h b/av1/encoder/block.h
index b4f58fc..68a32d2 100644
--- a/av1/encoder/block.h
+++ b/av1/encoder/block.h
@@ -279,8 +279,10 @@
 #if CONFIG_CONTEXT_DERIVATION
   //! Cost for encoding the AOM_PLANE_V txfm coefficient dc_sign
   int v_dc_sign_cost[CROSS_COMPONENT_CONTEXTS][DC_SIGN_CONTEXTS][2];
+#if CONFIG_CTX_V_AC_SIGN == 0
   //! Cost for encoding the AOM_PLANE_V txfm coefficient ac_sign
   int v_ac_sign_cost[CROSS_COMPONENT_CONTEXTS][2];
+#endif
 #endif  // CONFIG_CONTEXT_DERIVATION
   //! Cost for encoding an increment to the coefficient
   int lps_cost[LEVEL_CONTEXTS][COEFF_BASE_RANGE + 1 + COEFF_BASE_RANGE + 1];
diff --git a/av1/encoder/encodemv.c b/av1/encoder/encodemv.c
index f7e5ef6..1eb7329 100644
--- a/av1/encoder/encodemv.c
+++ b/av1/encoder/encodemv.c
@@ -350,8 +350,12 @@
     const int num_of_bits_for_this_offset =
         (shell_class == 0) ? 1 : shell_class;
     for (int i = 0; i < num_of_bits_for_this_offset; ++i) {
+#if CONFIG_CTX_MV_SHELL_OFFSET_OTHER
+      aom_write_bit(w, (shell_cls_offset >> i) & 1);
+#else
       aom_write_symbol(w, (shell_cls_offset >> i) & 1,
                        mvctx->shell_offset_other_class_cdf[0][i], 2);
+#endif
     }
   }
 
diff --git a/av1/encoder/encodetxb.c b/av1/encoder/encodetxb.c
index 2147b18..ac7563d 100644
--- a/av1/encoder/encodetxb.c
+++ b/av1/encoder/encodetxb.c
@@ -252,7 +252,9 @@
 #endif
   int eob_extra;
   const int eob_pt = get_eob_pos_token(eob, &eob_extra);
+#if !CONFIG_EOB_PT_CTX_REDUCTION
   TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size);
+#endif
 
   const int eob_multi_size = txsize_log2_minus4[tx_size];
 #if CONFIG_EOB_POS_LUMA
@@ -326,14 +328,24 @@
 
   const int eob_offset_bits = av1_eob_offset_bits[eob_pt];
   if (eob_offset_bits > 0) {
+#if !CONFIG_EOB_PT_CTX_REDUCTION
     int eob_ctx = eob_pt - 3;
+#endif
     int eob_shift = eob_offset_bits - 1;
     int bit = (eob_extra & (1 << eob_shift)) ? 1 : 0;
 #if CONFIG_ENTROPY_STATS
+#if CONFIG_EOB_PT_CTX_REDUCTION
+    counts->eob_extra[cdf_idx][0][0][0][bit]++;
+#else
     counts->eob_extra[cdf_idx][txs_ctx][plane][eob_ctx][bit]++;
+#endif
 #endif  // CONFIG_ENTROPY_STATS
     if (allow_update_cdf)
+#if CONFIG_EOB_PT_CTX_REDUCTION
+      update_cdf(ec_ctx->eob_extra_cdf[0][0][0], bit, 2);
+#else
       update_cdf(ec_ctx->eob_extra_cdf[txs_ctx][plane][eob_ctx], bit, 2);
+#endif
   }
 }
 
@@ -732,8 +744,10 @@
                             TX_SIZE tx_size, int eob) {
   MACROBLOCKD *xd = &x->e_mbd;
   FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
+#if !CONFIG_EOB_PT_CTX_REDUCTION
   const PLANE_TYPE plane_type = get_plane_type(plane);
   const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size);
+#endif
 #if CONFIG_EOB_POS_LUMA
   const int is_inter = is_inter_block(xd->mi[0], xd->tree_type);
   const int pl_ctx = get_eob_plane_ctx(plane, is_inter);
@@ -777,11 +791,17 @@
   }
   const int eob_offset_bits = av1_eob_offset_bits[eob_pt];
   if (eob_offset_bits > 0) {
+#if !CONFIG_EOB_PT_CTX_REDUCTION
     const int eob_ctx = eob_pt - 3;
+#endif
     int eob_shift = eob_offset_bits - 1;
     int bit = (eob_extra & (1 << eob_shift)) ? 1 : 0;
+#if CONFIG_EOB_PT_CTX_REDUCTION
+    aom_write_symbol(w, bit, ec_ctx->eob_extra_cdf[0][0][0], 2);
+#else
     aom_write_symbol(w, bit,
                      ec_ctx->eob_extra_cdf[txs_ctx][plane_type][eob_ctx], 2);
+#endif
 #if CONFIG_BYPASS_IMPROVEMENT
     // Zero out top bit; write (eob_offset_bits - 1) lsb bits.
     eob_extra &= (1 << (eob_offset_bits - 1)) - 1;
@@ -1575,10 +1595,14 @@
 #if CONFIG_CONTEXT_DERIVATION
         if (plane == AOM_PLANE_U) xd->tmp_sign[tmp_sign_idx] = (sign ? 2 : 1);
         if (plane == AOM_PLANE_V) {
+#if CONFIG_BY_PASS_V_SIGN
+          aom_write_literal(w, sign, 1);
+#else
           aom_write_symbol(
               w, sign,
               ec_ctx->v_dc_sign_cdf[xd->tmp_sign[tmp_sign_idx]][dc_sign_ctx],
               2);
+#endif
         } else {
 #if CONFIG_IMPROVEIDTX
           aom_write_symbol(
@@ -1595,7 +1619,7 @@
                          2);
 #endif  // CONFIG_CONTEXT_DERIVATION
       } else {
-#if CONFIG_CONTEXT_DERIVATION
+#if CONFIG_CONTEXT_DERIVATION && CONFIG_CTX_V_AC_SIGN == 0
         if (plane == AOM_PLANE_U) xd->tmp_sign[scan[c]] = (sign ? 2 : 1);
         if (plane == AOM_PLANE_Y || plane == AOM_PLANE_U)
           aom_write_bit(w, sign);
@@ -2420,12 +2444,16 @@
         }
         if (c == 0) return cost;
       } else {
+#if CONFIG_CTX_V_AC_SIGN
+        cost += av1_cost_literal(1);
+#else
         if (plane == AOM_PLANE_V) {
           const int sign01 = (sign ^ sign) - sign;
           cost += coeff_costs->v_ac_sign_cost[xd->tmp_sign[pos]][sign01];
         } else {
           cost += av1_cost_literal(1);
         }
+#endif
       }
 #else
       if (c) {
@@ -2537,6 +2565,9 @@
           cost += coeff_costs->dc_sign_cost[dc_ph_group][dc_sign_ctx][sign01];
         }
       } else {
+#if CONFIG_CTX_V_AC_SIGN
+        cost += av1_cost_literal(1);
+#else
         if (plane == AOM_PLANE_V) {
           const int sign = AOMSIGN(v);
           const int sign01 = (sign ^ sign) - sign;
@@ -2544,6 +2575,7 @@
         } else {
           cost += av1_cost_literal(1);
         }
+#endif
       }
 #else
 #if CONFIG_CONTEXT_DERIVATION
@@ -3392,10 +3424,14 @@
       else
         cost += txb_costs->dc_sign_cost[dc_ph_group][dc_sign_ctx][sign];
     } else {
+#if CONFIG_CTX_V_AC_SIGN
+      cost += av1_cost_literal(1);
+#else
       if (plane == AOM_PLANE_V)
         cost += txb_costs->v_ac_sign_cost[tmp_sign[ci]][sign];
       else
         cost += av1_cost_literal(1);
+#endif
     }
 #else
     if (ci == 0) {
@@ -3581,10 +3617,14 @@
       else
         cost += txb_costs->dc_sign_cost[dc_ph_group][dc_sign_ctx][sign];
     } else {
+#if CONFIG_CTX_V_AC_SIGN
+      cost += av1_cost_literal(1);
+#else
       if (plane == AOM_PLANE_V)
         cost += txb_costs->v_ac_sign_cost[tmp_sign[ci]][sign];
       else
         cost += av1_cost_literal(1);
+#endif
     }
 #else
     if (ci == 0) {
diff --git a/av1/encoder/mv_prec.c b/av1/encoder/mv_prec.c
index 61db6e6..14f24cf 100644
--- a/av1/encoder/mv_prec.c
+++ b/av1/encoder/mv_prec.c
@@ -477,8 +477,12 @@
   } else {
     const int num_of_bits_for_this_offset = shell_class;
     for (int i = 0; i < num_of_bits_for_this_offset; ++i) {
+#if CONFIG_CTX_MV_SHELL_OFFSET_OTHER
+      total_rate += av1_cost_literal(1);
+#else
       total_rate += get_symbol_cost(mvctx->shell_offset_other_class_cdf[0][i],
                                     (shell_cls_offset >> i) & 1);
+#endif
       update_cdf(mvctx->shell_offset_other_class_cdf[0][i],
                  (shell_cls_offset >> i) & 1, 2);
     }
diff --git a/av1/encoder/rd.c b/av1/encoder/rd.c
index 8063f5e..e5c94ce 100644
--- a/av1/encoder/rd.c
+++ b/av1/encoder/rd.c
@@ -1374,8 +1374,13 @@
             fc->coeff_base_bob_cdf[ctx], NULL);
 #endif  // CONFIG_IMPROVEIDTX
       for (int ctx = 0; ctx < EOB_COEF_CONTEXTS; ++ctx)
+#if CONFIG_EOB_PT_CTX_REDUCTION
+        av1_cost_tokens_from_cdf(pcost->eob_extra_cost[ctx],
+                                 fc->eob_extra_cdf[0][0][0], NULL);
+#else
         av1_cost_tokens_from_cdf(pcost->eob_extra_cost[ctx],
                                  fc->eob_extra_cdf[tx_size][plane][ctx], NULL);
+#endif
 #if CONFIG_IMPROVEIDTX
       for (int gr = 0; gr < DC_SIGN_GROUPS; ++gr) {
         for (int ctx = 0; ctx < DC_SIGN_CONTEXTS; ++ctx) {
@@ -1390,13 +1395,23 @@
 #endif  // CONFIG_IMPROVEIDTX
 #if CONFIG_CONTEXT_DERIVATION
       if (plane == PLANE_TYPE_UV) {
-        for (int i = 0; i < CROSS_COMPONENT_CONTEXTS; ++i)
-          for (int ctx = 0; ctx < DC_SIGN_CONTEXTS; ++ctx)
+        for (int i = 0; i < CROSS_COMPONENT_CONTEXTS; ++i) {
+          for (int ctx = 0; ctx < DC_SIGN_CONTEXTS; ++ctx) {
+#if CONFIG_BY_PASS_V_SIGN
+            pcost->v_dc_sign_cost[i][ctx][0] = av1_cost_literal(1);
+            pcost->v_dc_sign_cost[i][ctx][1] = av1_cost_literal(1);
+#else
             av1_cost_tokens_from_cdf(pcost->v_dc_sign_cost[i][ctx],
                                      fc->v_dc_sign_cdf[i][ctx], NULL);
-        for (int i = 0; i < CROSS_COMPONENT_CONTEXTS; ++i)
+#endif
+          }
+        }
+#if CONFIG_CTX_V_AC_SIGN == 0
+        for (int i = 0; i < CROSS_COMPONENT_CONTEXTS; ++i) {
           av1_cost_tokens_from_cdf(pcost->v_ac_sign_cost[i],
                                    fc->v_ac_sign_cdf[i], NULL);
+        }
+#endif
       }
 #endif  // CONFIG_CONTEXT_DERIVATION
 
diff --git a/av1/encoder/trellis_quant.c b/av1/encoder/trellis_quant.c
index 05fbadd..ad29864 100644
--- a/av1/encoder/trellis_quant.c
+++ b/av1/encoder/trellis_quant.c
@@ -152,10 +152,14 @@
       else
         cost += txb_costs->dc_sign_cost[dc_ph_group][dc_sign_ctx][sign];
     } else {
+#if CONFIG_CTX_V_AC_SIGN
+      cost += av1_cost_literal(1);
+#else
       if (plane == AOM_PLANE_V)
         cost += txb_costs->v_ac_sign_cost[t_sign][sign];
       else
         cost += av1_cost_literal(1);
+#endif
     }
 #else
     if (ci == 0) {
@@ -225,16 +229,24 @@
                                      int diag_ctx, int plane,
                                      const LV_MAP_COEFF_COST *txb_costs,
                                      int q_i, int t_sign, int sign) {
+#if CONFIG_CTX_V_AC_SIGN
+  (void)t_sign;
+  (void)sign;
+#endif
   int base_ctx = diag_ctx + (coeff_ctx & 15);
   int mid_ctx = coeff_ctx >> 4;
   const int(*base_cost_ptr)[TCQ_CTXS][8] =
       plane > 0 ? txb_costs->base_cost_uv : txb_costs->base_cost;
   int cost = base_cost_ptr[base_ctx][q_i][AOMMIN(abs_qc, 3)];
   if (abs_qc != 0) {
+#if CONFIG_CTX_V_AC_SIGN
+    cost += av1_cost_literal(1);
+#else
     if (plane == AOM_PLANE_V)
       cost += txb_costs->v_ac_sign_cost[t_sign][sign];
     else
       cost += av1_cost_literal(1);
+#endif
     if (abs_qc > NUM_BASE_LEVELS) {
       if (plane == 0) {
         cost += get_br_cost_tcq(abs_qc, txb_costs->lps_cost[mid_ctx]);
@@ -274,10 +286,14 @@
       else
         cost += txb_costs->dc_sign_cost[dc_ph_group][dc_sign_ctx][sign];
     } else {
+#if CONFIG_CTX_V_AC_SIGN
+      cost += av1_cost_literal(1);
+#else
       if (plane == AOM_PLANE_V)
         cost += txb_costs->v_ac_sign_cost[tmp_sign[ci]][sign];
       else
         cost += av1_cost_literal(1);
+#endif
     }
     if (plane > 0) {
       if (limits) {
diff --git a/av1/encoder/x86/trellis_quant_avx2.c b/av1/encoder/x86/trellis_quant_avx2.c
index 50a4fb2..c7e1b34 100644
--- a/av1/encoder/x86/trellis_quant_avx2.c
+++ b/av1/encoder/x86/trellis_quant_avx2.c
@@ -317,9 +317,15 @@
                                    const LV_MAP_COEFF_COST *txb_costs,
                                    int plane, int t_sign, int sign) {
   int cost = 0;
+#if CONFIG_CTX_V_AC_SIGN
+  (void)t_sign;
+  (void)sign;
+  cost += av1_cost_literal(1);
+#else
   if (plane == AOM_PLANE_V) {
     cost += txb_costs->v_ac_sign_cost[t_sign][sign] - av1_cost_literal(1);
   }
+#endif
   if (abs_qc > NUM_BASE_LEVELS) {
     int mid_ctx = coeff_ctx >> 4;
     if (plane == 0) {
@@ -348,9 +354,13 @@
         cost += txb_costs->dc_sign_cost[dc_ph_group][dc_sign_ctx][sign];
       }
     } else {
+#if CONFIG_CTX_V_AC_SIGN
+      cost += av1_cost_literal(1);
+#else
       if (plane == AOM_PLANE_V) {
         cost += txb_costs->v_ac_sign_cost[t_sign][sign] - av1_cost_literal(1);
       }
+#endif
     }
     if (plane > 0) {
       if (abs_qc > LF_NUM_BASE_LEVELS) {
@@ -364,9 +374,13 @@
       }
     }
   } else {
+#if CONFIG_CTX_V_AC_SIGN
+    cost += av1_cost_literal(1);
+#else
     if (plane == AOM_PLANE_V) {
       cost += txb_costs->v_ac_sign_cost[t_sign][sign] - av1_cost_literal(1);
     }
+#endif
     if (plane > 0) {
       if (abs_qc > NUM_BASE_LEVELS) {
         int br_ctx = 0; /* get_br_ctx_eob_chroma */
diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index 9a0b17b..7b209ce 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -146,6 +146,11 @@
 set_aom_config_var(CONFIG_PARAKIT_COLLECT_DATA 0
                    "enables data collection for ParaKit training.")
 
+set_aom_config_var(CONFIG_CTX_V_AC_SIGN 1 "FG8-Test1.")
+set_aom_config_var(CONFIG_CTX_MV_SHELL_OFFSET_OTHER 1 "FG8-Test3.")
+set_aom_config_var(CONFIG_EOB_PT_CTX_REDUCTION 1 "FG8-Test4.")
+set_aom_config_var(CONFIG_BY_PASS_V_SIGN 1 "FG8-Test11.")
+
 # AV2 experiment flags.
 set_aom_config_var(CONFIG_IMPROVEIDTX 1
                    "AV2 enable improved identity transform coding.")