Add -DNDEBUG when config option debug is disabled

For gcc, when libvpx config option debug is disabled, added the
flag -DNDEBUG to disable the assertions in libvpx for some speedup.

Change-Id: Ifcb7b9e8ef5cbe5d07a24407b53b9a2923f596ee

build/make/configure.sh

diff --git a/build/make/configure.sh b/build/make/configure.sh
index f22e3e0..d25f313 100755
--- a/build/make/configure.sh
+++ b/build/make/configure.sh
@@ -1222,7 +1222,12 @@
         fi
     fi
 
-    enabled debug && check_add_cflags -g && check_add_ldflags -g
+    if enabled debug; then
+        check_add_cflags -g && check_add_ldflags -g
+    else
+        check_add_cflags -DNDEBUG
+    fi
+
     enabled gprof && check_add_cflags -pg && check_add_ldflags -pg
     enabled gcov &&
         check_add_cflags -fprofile-arcs -ftest-coverage &&

vp8/encoder/onyx_if.c

diff --git a/vp8/encoder/onyx_if.c b/vp8/encoder/onyx_if.c
index 373dbeb..63d6926 100644
--- a/vp8/encoder/onyx_if.c
+++ b/vp8/encoder/onyx_if.c
@@ -1405,7 +1405,7 @@
         double prev_layer_framerate=0;
 
         assert(oxcf->number_of_layers <= VPX_TS_MAX_LAYERS);
-        for (i=0; i<oxcf->number_of_layers; i++)
+        for (i = 0; i < oxcf->number_of_layers && i < VPX_TS_MAX_LAYERS; ++i)
         {
             LAYER_CONTEXT *lc = &cpi->layer_context[i];
 
@@ -5037,7 +5037,8 @@
 
                 /* Update frame rates for each layer */
                 assert(cpi->oxcf.number_of_layers <= VPX_TS_MAX_LAYERS);
-                for (i=0; i<cpi->oxcf.number_of_layers; i++)
+                for (i = 0; i < cpi->oxcf.number_of_layers &&
+                     i < VPX_TS_MAX_LAYERS; ++i)
                 {
                     LAYER_CONTEXT *lc = &cpi->layer_context[i];
                     lc->framerate = cpi->ref_framerate /

vp9/decoder/vp9_decodeframe.c

diff --git a/vp9/decoder/vp9_decodeframe.c b/vp9/decoder/vp9_decodeframe.c
index 614bf4b..15c8410 100644
--- a/vp9/decoder/vp9_decodeframe.c
+++ b/vp9/decoder/vp9_decodeframe.c
@@ -194,7 +194,7 @@
                                     int eob) {
   struct macroblockd_plane *const pd = &xd->plane[plane];
   if (eob > 0) {
-    TX_TYPE tx_type;
+    TX_TYPE tx_type = DCT_DCT;
     int16_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
     if (xd->lossless) {
       tx_type = DCT_DCT;

vp9/encoder/vp9_encodeframe.c

diff --git a/vp9/encoder/vp9_encodeframe.c b/vp9/encoder/vp9_encodeframe.c
index c43ef5b..3672e62 100644
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -260,6 +260,8 @@
 
 static void tree_to_node(void *data, BLOCK_SIZE bsize, variance_node *node) {
   int i;
+  node->part_variances = NULL;
+  vpx_memset(node->split, 0, sizeof(node->split));
   switch (bsize) {
     case BLOCK_64X64: {
       v64x64 *vt = (v64x64 *) data;

vp9/encoder/vp9_rdopt.c

diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index eae469d..7236d93 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -3019,7 +3019,6 @@
   RD_OPT *const rd_opt = &cpi->rd;
   MACROBLOCKD *const xd = &x->e_mbd;
   MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
-  const struct segmentation *const seg = &cm->seg;
   unsigned char segment_id = mbmi->segment_id;
   const int comp_pred = 0;
   int i;
@@ -3045,7 +3044,7 @@
 
   *returnrate = INT_MAX;
 
-  assert(vp9_segfeature_active(seg, segment_id, SEG_LVL_SKIP));
+  assert(vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP));
 
   mbmi->mode = ZEROMV;
   mbmi->uv_mode = DC_PRED;