Add insn_label_tight() method to jitplus

ChangeLog

@@ -7,6 +7,9 @@
 	* include/jit/jit-insn.h, jit/jit-insn.c (jit_insn_label_tight): add
 	new function for the behavior of jit_insn_label() before reverted.
 
+	* include/jit/jit-plus.h
+	* jitplus/jit-plus-function.cpp (insn_label_tight): likewise.
+
 2016-04-07  Aleksey Demakov  <ademakov@gmail.com>
 
 	* jit/jit-insn.c (jit_insn_call): the "intuit additional flags" code

include/jit/jit-plus.h

@@ -242,7 +242,10 @@ public:
 	jit_label new_label();
 
 	void insn_label(jit_label& label);
+	void insn_label_tight(jit_label& label);
+
 	void insn_new_block();
+
 	jit_value insn_load(const jit_value& value);
 	jit_value insn_dup(const jit_value& value);
 	jit_value insn_load_small(const jit_value& value);

jitplus/jit-plus-function.cpp

@@ -533,6 +533,7 @@ jit_label jit_function::new_label()
 
 /*@
  * @deftypemethod jit_function void insn_label (jit_label& @var{label})
+ * @deftypemethodx jit_function void insn_label_tight (jit_label& @var{label})
  * @deftypemethodx jit_function void insn_new_block ()
  * @deftypemethodx jit_function jit_value insn_load (const jit_value& @var{value})
  * @deftypemethodx jit_function jit_value insn_dup (const jit_value& @var{value})
@@ -662,6 +663,14 @@ void jit_function::insn_label(jit_label& label)
 	}
 }
 
+void jit_function::insn_label_tight(jit_label& label)
+{
+	if(!jit_insn_label_tight(func, label.rawp()))
+	{
+		out_of_memory();
+	}
+}
+
 void jit_function::insn_new_block()
 {
 	if(!jit_insn_new_block(func))