tgsi: added tgsi_alloc_tokens()

src/gallium/auxiliary/tgsi/tgsi_parse.c

@@ -284,3 +284,14 @@ tgsi_dup_tokens(const struct tgsi_token *tokens)
       memcpy(new_tokens, tokens, bytes);
    return new_tokens;
 }
+
+
+/**
+ * Allocate memory for num_tokens tokens.
+ */
+struct tgsi_token *
+tgsi_alloc_tokens(unsigned num_tokens)
+{
+   unsigned bytes = num_tokens * sizeof(struct tgsi_token);
+   return (struct tgsi_token *) MALLOC(bytes);
+}

src/gallium/auxiliary/tgsi/tgsi_parse.h

@@ -130,6 +130,10 @@ tgsi_num_tokens(const struct tgsi_token *tokens);
 struct tgsi_token *
 tgsi_dup_tokens(const struct tgsi_token *tokens);
 
+struct tgsi_token *
+tgsi_alloc_tokens(unsigned num_tokens);
+
+
 #if defined __cplusplus
 }
 #endif