ir: Give ir_instruction a print visitor helper.

This avoids spamming each file with includes of ir_print_visitor.h
because someone was doing debugging at some point, and is less typing
when doing debugging.

ir.h

@@ -45,6 +45,10 @@ public:
    const struct glsl_type *type;
 
    class ir_constant *constant_expression_value();
+
+   /** ir_print_visitor helper for debugging. */
+   void print(void);
+
    virtual void accept(ir_visitor *) = 0;
    virtual ir_visitor_status accept(ir_hierarchical_visitor *) = 0;
 

ir_constant_variable.cpp

@@ -33,7 +33,6 @@
  */
 
 #include "ir.h"
-#include "ir_print_visitor.h"
 #include "ir_visitor.h"
 #include "ir_optimization.h"
 #include "glsl_types.h"

ir_copy_propagation.cpp

@@ -34,7 +34,6 @@
 
 #include "ir.h"
 #include "ir_visitor.h"
-#include "ir_print_visitor.h"
 #include "ir_basic_block.h"
 #include "ir_optimization.h"
 #include "glsl_types.h"

ir_dead_code_local.cpp

@@ -34,7 +34,6 @@
  */
 
 #include "ir.h"
-#include "ir_print_visitor.h"
 #include "ir_basic_block.h"
 #include "ir_optimization.h"
 #include "glsl_types.h"
@@ -192,8 +191,7 @@ dead_code_local_basic_block(ir_instruction *first,
       ir_assignment *ir_assign = ir->as_assignment();
 
       if (debug) {
-	 ir_print_visitor v;
-	 ir->accept(&v);
+	 ir->print();
 	 printf("\n");
       }
 

ir_print_visitor.cpp

@@ -27,6 +27,13 @@
 
 static void print_type(const glsl_type *t);
 
+void
+ir_instruction::print(void)
+{
+   ir_print_visitor v;
+   accept(&v);
+}
+
 void
 _mesa_print_ir(exec_list *instructions,
 	       struct _mesa_glsl_parse_state *state)
@@ -48,9 +55,7 @@ _mesa_print_ir(exec_list *instructions,
 
    printf("(\n");
    foreach_iter(exec_list_iterator, iter, *instructions) {
-      ir_print_visitor v;
-
-      ((ir_instruction *)iter.get())->accept(& v);
+      ((ir_instruction *)iter.get())->print();
       printf("\n");
    }
    printf("\n)");

ir_vec_index_to_swizzle.cpp

@@ -32,7 +32,6 @@
 #include "ir.h"
 #include "ir_visitor.h"
 #include "ir_optimization.h"
-#include "ir_print_visitor.h"
 #include "glsl_types.h"
 
 /**