virglrenderer: silence some compile warnings

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>

src/gallium/auxiliary/tgsi/tgsi_strings.c

@@ -228,7 +228,7 @@ const char *tgsi_memory_names[3] =
    "VOLATILE",
 };
 
-static inline void
+static inline void UNUSED
 tgsi_strings_check(void)
 {
    STATIC_ASSERT(Elements(tgsi_semantic_names) == TGSI_SEMANTIC_COUNT);

src/gallium/auxiliary/util/u_math.c

@@ -35,8 +35,10 @@
 #include <xmmintrin.h>
 /* This is defined in pmmintrin.h, but it can only be included when -msse3 is
  * used, so just define it here to avoid further. */
+#ifndef _MM_DENORMALS_ZERO_MASK
 #define _MM_DENORMALS_ZERO_MASK	0x0040
 #endif
+#endif
 
 #if 0
 /** 2^x, for x in [-1.0, 1.0) */

src/vrend_winsys_egl.c

@@ -740,4 +740,4 @@ bool virgl_egl_export_fence(struct virgl_egl *egl, EGLSyncKHR fence, int *out_fd
 bool virgl_egl_different_gpu(struct virgl_egl *egl)
 {
    return egl->different_gpu;
-}
+}

src/vrend_winsys_gbm.c

@@ -345,7 +345,7 @@ int virgl_gbm_transfer(struct gbm_bo *bo, uint32_t direction, const struct iovec
    /* XXX remove this and map just the region when single plane and GBM honors the region */
    if (direction == VIRGL_TRANSFER_TO_HOST &&
        !(info->box->x == 0 && info->box->y == 0 &&
-         info->box->width == width && info->box->height == height))
+         info->box->width == (int)width && info->box->height == (int)height))
       map_flags |= GBM_BO_TRANSFER_READ;
 
    void *addr = gbm_bo_map(bo, 0, 0, width, height, map_flags, &host_map_stride0, &map_data);
@@ -440,7 +440,8 @@ uint32_t virgl_gbm_convert_flags(uint32_t virgl_bind_flags)
    if (virgl_bind_flags & VIRGL_BIND_MINIGBM_HW_VIDEO_ENCODER)
       flags |= GBM_BO_USE_HW_VIDEO_ENCODER;
 
-   if ((virgl_bind_flags & VIRGL_BIND_MINIGBM_PROTECTED) == VIRGL_BIND_MINIGBM_PROTECTED) {
+   if ((virgl_bind_flags & VIRGL_BIND_MINIGBM_PROTECTED) ==
+       (uint32_t)VIRGL_BIND_MINIGBM_PROTECTED) {
       flags |= GBM_BO_USE_PROTECTED;
    } else {
       if (virgl_bind_flags & VIRGL_BIND_MINIGBM_SW_READ_OFTEN)