i965: added brw_same_reg()

src/mesa/drivers/dri/i965/brw_eu.h

@@ -730,6 +730,13 @@ static INLINE struct brw_indirect brw_indirect( GLuint addr_subnr, GLint offset
    return ptr;
 }
 
+/** Do two brw_regs refer to the same register? */
+static INLINE GLboolean
+brw_same_reg(struct brw_reg r1, struct brw_reg r2)
+{
+   return r1.file == r2.file && r1.nr == r2.nr;
+}
+
 static INLINE struct brw_instruction *current_insn( struct brw_compile *p)
 {
    return &p->store[p->nr_insn];