diff --git a/vp9/encoder/vp9_firstpass.c b/vp9/encoder/vp9_firstpass.c
index 5cd72532d5b4e358127d2212aec878032fd49f5b..cd4e3d67025e46d6dc69fe54d45d38a980e33e8b 100644
--- a/vp9/encoder/vp9_firstpass.c
+++ b/vp9/encoder/vp9_firstpass.c
@@ -69,13 +69,6 @@ static int gfboost_qadjust(int qindex) {
                (1.32 * q) + 79.3);
 }
 
-static int kfboost_qadjust(int qindex) {
-  const double q = vp9_convert_qindex_to_q(qindex);
-  return (int)((0.00000973 * q * q * q) +
-               (-0.00613 * q * q) +
-               (1.316 * q) + 121.2);
-}
-
 // Resets the first pass file to the given position using a relative seek from
 // the current position.
 static void reset_fpf_position(struct twopass_rc *p,
@@ -826,12 +819,6 @@ void vp9_first_pass(VP9_COMP *cpi) {
   ++cm->current_video_frame;
 }
 
-// Estimate a cost per mb attributable to overheads such as the coding of modes
-// and motion vectors. This currently makes simplistic assumptions for testing.
-static double bitcost(double prob) {
-  return -(log(prob) / log(2.0));
-}
-
 static double calc_correction_factor(double err_per_mb,
                                      double err_divisor,
                                      double pt_low,
@@ -2131,7 +2118,7 @@ void vp9_rc_get_first_pass_params(VP9_COMP *cpi) {
   VP9_COMMON *const cm = &cpi->common;
   if (!cpi->refresh_alt_ref_frame &&
       (cm->current_video_frame == 0 ||
-       cm->frame_flags & FRAMEFLAGS_KEY)) {
+       (cm->frame_flags & FRAMEFLAGS_KEY))) {
     cm->frame_type = KEY_FRAME;
   } else {
     cm->frame_type = INTER_FRAME;
diff --git a/vp9/encoder/vp9_ratectrl.c b/vp9/encoder/vp9_ratectrl.c
index 8430e4b644be709806d1caf5026412e11da48513..f72e1e11a5c2723bb2b490f5963a6a907d4e67c9 100644
--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -1272,7 +1272,7 @@ void vp9_rc_get_one_pass_vbr_params(VP9_COMP *cpi) {
   int target;
   if (!cpi->refresh_alt_ref_frame &&
       (cm->current_video_frame == 0 ||
-       cm->frame_flags & FRAMEFLAGS_KEY ||
+       (cm->frame_flags & FRAMEFLAGS_KEY) ||
        rc->frames_to_key == 0 ||
        (cpi->oxcf.auto_key && test_for_kf_one_pass(cpi)))) {
     cm->frame_type = KEY_FRAME;
@@ -1378,7 +1378,7 @@ void vp9_rc_get_one_pass_cbr_params(VP9_COMP *cpi) {
   RATE_CONTROL *const rc = &cpi->rc;
   int target;
   if ((cm->current_video_frame == 0 ||
-      cm->frame_flags & FRAMEFLAGS_KEY ||
+      (cm->frame_flags & FRAMEFLAGS_KEY) ||
       rc->frames_to_key == 0 ||
       (cpi->oxcf.auto_key && test_for_kf_one_pass(cpi)))) {
     cm->frame_type = KEY_FRAME;
diff --git a/vp9/encoder/vp9_ssim.c b/vp9/encoder/vp9_ssim.c
index a5f18e6313b7c6f9c029b7e51427f4726ddee88d..1435191d026979e0a2d868bb31ec99d0d1bf324f 100644
--- a/vp9/encoder/vp9_ssim.c
+++ b/vp9/encoder/vp9_ssim.c
@@ -65,12 +65,6 @@ static double similarity(unsigned long sum_s, unsigned long sum_r,
   return ssim_n * 1.0 / ssim_d;
 }
 
-static double ssim_16x16(uint8_t *s, int sp, uint8_t *r, int rp) {
-  unsigned long sum_s = 0, sum_r = 0, sum_sq_s = 0, sum_sq_r = 0, sum_sxr = 0;
-  vp9_ssim_parms_16x16(s, sp, r, rp, &sum_s, &sum_r, &sum_sq_s, &sum_sq_r,
-                       &sum_sxr);
-  return similarity(sum_s, sum_r, sum_sq_s, sum_sq_r, sum_sxr, 256);
-}
 static double ssim_8x8(uint8_t *s, int sp, uint8_t *r, int rp) {
   unsigned long sum_s = 0, sum_r = 0, sum_sq_s = 0, sum_sq_r = 0, sum_sxr = 0;
   vp9_ssim_parms_8x8(s, sp, r, rp, &sum_s, &sum_r, &sum_sq_s, &sum_sq_r,
diff --git a/vp9/encoder/vp9_subexp.c b/vp9/encoder/vp9_subexp.c
index fd82fa3b2a07cc9eddd9be342ff26f8b92df60e1..9796d647624484bad283b2d8b6ee05b6403ee7af 100644
--- a/vp9/encoder/vp9_subexp.c
+++ b/vp9/encoder/vp9_subexp.c
@@ -18,15 +18,6 @@
 
 static int update_bits[255];
 
-static int split_index(int i, int n, int modulus) {
-  int max1 = (n - 1 - modulus / 2) / modulus + 1;
-  if (i % modulus == modulus / 2)
-    i = i / modulus;
-  else
-    i = max1 + i - (i + modulus - modulus / 2) / modulus;
-  return i;
-}
-
 static int recenter_nonneg(int v, int m) {
   if (v > (m << 1))
     return v;
diff --git a/vp9/encoder/vp9_tokenize.c b/vp9/encoder/vp9_tokenize.c
index a293dd8812a3709057772f6260fd2e04eb56e1f8..bb5f1c23bdd07a76b9f58bec2481caf5e9828243 100644
--- a/vp9/encoder/vp9_tokenize.c
+++ b/vp9/encoder/vp9_tokenize.c
@@ -298,13 +298,6 @@ static void is_skippable(int plane, int block,
   args->skippable[0] &= (!args->x->plane[plane].eobs[block]);
 }
 
-static int sb_is_skippable(MACROBLOCK *x, BLOCK_SIZE bsize) {
-  int result = 1;
-  struct is_skippable_args args = {x, &result};
-  vp9_foreach_transformed_block(&x->e_mbd, bsize, is_skippable, &args);
-  return result;
-}
-
 int vp9_is_skippable_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane) {
   int result = 1;
   struct is_skippable_args args = {x, &result};
diff --git a/vp9/encoder/x86/vp9_variance_mmx.c b/vp9/encoder/x86/vp9_variance_mmx.c
index a3d011401dd7ece354c7baf55802c9daab47ef02..c4d17fc0f74c7ac3beffba4cc630d30784f0f518 100644
--- a/vp9/encoder/x86/vp9_variance_mmx.c
+++ b/vp9/encoder/x86/vp9_variance_mmx.c
@@ -13,7 +13,6 @@
 #include "vp9/common/vp9_pragmas.h"
 #include "vpx_ports/mem.h"
 
-extern unsigned int vp9_get_mb_ss_mmx(const int16_t *src_ptr);
 extern unsigned int vp9_get8x8var_mmx
 (
   const unsigned char *src_ptr,
diff --git a/vp9/encoder/x86/vp9_variance_sse2.c b/vp9/encoder/x86/vp9_variance_sse2.c
index 79e42c4cd4ac9f90e7cecae97503ddf32b09b29c..9e65694a86a8525aa257325243b9cf810923fcd0 100644
--- a/vp9/encoder/x86/vp9_variance_sse2.c
+++ b/vp9/encoder/x86/vp9_variance_sse2.c
@@ -24,10 +24,6 @@ extern unsigned int vp9_get4x4var_mmx
   int *Sum
 );
 
-unsigned int vp9_get_mb_ss_sse2
-(
-  const int16_t *src_ptr
-);
 unsigned int vp9_get16x16var_sse2
 (
   const unsigned char *src_ptr,