i965: make swizzle_for_size() return unsigned

Silences a warning about comparing to an unsigned variable.  It looks like
the result of swizzle_for_size() is always assigned to unsigned vars.

Reviewed-by: Chad Versace <chad@chad-versace.us>

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h b/src/mesa/drivers/dri/i965/brw_vec4.h
index 1caf1a665134c12929ce2b02cde6a1fc8e873951..eae841c6d036444a3a751138b2bc69fe552e86aa 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_vec4.h
+++ b/src/mesa/drivers/dri/i965/brw_vec4.h
@@ -47,10 +47,10 @@ class dst_reg;
  * channels, as that will tell optimization passes that those other
  * channels are used.
  */
-static int
+static unsigned
 swizzle_for_size(int size)
 {
-   static const int size_swizzles[4] = {
+   static const unsigned size_swizzles[4] = {
       BRW_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_X),
       BRW_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Y, SWIZZLE_Y),
       BRW_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_Z),