Merge "vp8 quantize: silence conversion warning"

diff --cc vp8/encoder/x86/quantize_sse4.c
index 13dd1ab,5b7eec0..389c167
--- 1/vp8/encoder/x86/quantize_sse4.c
--- 2/vp8/encoder/x86/quantize_sse4.c
+++ b/vp8/encoder/x86/quantize_sse4.c
@@@ -11,20 -11,22 +11,22 @@@
  #include <smmintrin.h> /* SSE4.1 */
  
  #include "./vp8_rtcd.h"
 -#include "vp8/encoder/block.h"
  #include "vp8/common/entropy.h" /* vp8_default_inv_zig_zag */
 +#include "vp8/encoder/block.h"
  
- #define SELECT_EOB(i, z, x, y, q)         \
-   do {                                    \
-     short boost = *zbin_boost_ptr;        \
-     short x_z = _mm_extract_epi16(x, z);  \
-     short y_z = _mm_extract_epi16(y, z);  \
-     int cmp = (x_z < boost) | (y_z == 0); \
-     zbin_boost_ptr++;                     \
-     if (cmp) break;                       \
-     q = _mm_insert_epi16(q, y_z, z);      \
-     eob = i;                              \
-     zbin_boost_ptr = b->zrun_zbin_boost;  \
+ #define SELECT_EOB(i, z, x, y, q)                         \
+   do {                                                    \
+     short boost = *zbin_boost_ptr;                        \
+     /* Technically _mm_extract_epi16() returns an int: */ \
+     /* https://bugs.llvm.org/show_bug.cgi?id=41657 */     \
+     short x_z = (short)_mm_extract_epi16(x, z);           \
+     short y_z = (short)_mm_extract_epi16(y, z);           \
+     int cmp = (x_z < boost) | (y_z == 0);                 \
+     zbin_boost_ptr++;                                     \
+     if (cmp) break;                                       \
+     q = _mm_insert_epi16(q, y_z, z);                      \
+     eob = i;                                              \
+     zbin_boost_ptr = b->zrun_zbin_boost;                  \
    } while (0)
  
  void vp8_regular_quantize_b_sse4_1(BLOCK *b, BLOCKD *d) {