added isa-callback so backend can provide it's own sorted list of irgs to generate code for

ir/be/bearch.h

@@ -737,6 +737,16 @@ struct _arch_isa_if_t {
 	 * @param self  The isa object.
 	 */
 	const be_machine_t *(*get_machine)(const void *self);
+
+	/**
+	 * Return an ordered list of irgs where code should be generated for.
+         * If NULL is returned, all irg will be taken into account and they will be
+         * generated in an arbitrary order.
+	 * @param self   The isa object.
+	 * @param irgs   A flexible array ARR_F of length 0 where the backend cann append the desired irgs.
+	 * @return A flexible array ARR_F containing all desired irgs in the desired order.
+	 */
+	ir_graph **(*get_backend_irg_list)(const void *self, ir_graph **irgs);
 };
 
 #define arch_isa_get_n_reg_class(isa)                  ((isa)->impl->get_n_reg_class(isa))
@@ -748,6 +758,7 @@ struct _arch_isa_if_t {
 #define arch_isa_get_reg_class_alignment(isa, cls)     ((isa)->impl->get_reg_class_alignment((isa), (cls)))
 #define arch_isa_get_allowed_execution_units(isa, irn) ((isa)->impl->get_allowed_execution_units((isa), (irn)))
 #define arch_isa_get_machine(isa)                      ((isa)->impl->get_machine((isa)))
+#define arch_isa_get_backend_irg_list(isa, irgs)       ((isa)->impl->get_backend_irg_list((isa), (irgs)))
 
 #define ARCH_MAX_HANDLERS         8
 

ir/be/bemain.c

@@ -373,6 +373,7 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 	static const char suffix[] = ".prof";
 	be_irg_t *birgs;
 	unsigned num_birgs;
+	ir_graph **irg_list, **backend_irg_list;
 
 	be_ra_timer_t *ra_timer;
 
@@ -407,16 +408,21 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 	be_dbg_so(env.db_handle, cup_name);
 	be_dbg_types(env.db_handle);
 
+	/* backend may provide an ordered list of irgs where code should be generated for */
+	irg_list = NEW_ARR_F(ir_graph *, 0);
+	backend_irg_list = arch_isa_get_backend_irg_list(isa, irg_list);
+
 	/* we might need 1 birg more for instrumentation constructor */
-	num_birgs = get_irp_n_irgs();
+	num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
 	birgs     = alloca(sizeof(birgs[0]) * (num_birgs + 1));
 
 	/* First: initialize all birgs */
-	for(i = 0; i < get_irp_n_irgs(); ++i) {
-		ir_graph *irg = get_irp_irg(i);
+	for(i = 0; i < num_birgs; ++i) {
+		ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
 
 		initialize_birg(&birgs[i], irg, &env);
 	}
+	DEL_ARR_F(irg_list);
 
 	/*
 		Get the filename for the profiling data.
@@ -442,7 +448,7 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 
 	/* For all graphs */
 	for (i = 0; i < num_birgs; ++i) {
-		be_irg_t *birg = & birgs[i];
+		be_irg_t *birg = &birgs[i];
 		ir_graph *irg  = birg->irg;
 		optimization_state_t state;
 		const arch_code_generator_if_t *cg_if;

ir/be/firm/bearch_firm.c

@@ -627,6 +627,13 @@ static const be_machine_t *firm_get_machine(const void *self) {
 	return NULL;
 }
 
+/**
+ * Return irp irgs in the desired order.
+ */
+static ir_graph **firm_get_irg_list(const void *self, ir_graph **irg_list) {
+	return NULL;
+}
+
 /**
  * Returns the libFirm configuration parameter for this backend.
  */
@@ -666,4 +673,5 @@ const arch_isa_if_t firm_isa = {
 	firm_get_libfirm_params,
 	firm_get_allowed_execution_units,
 	firm_get_machine,
+	firm_get_irg_list,
 };

ir/be/mips/bearch_mips.c

@@ -945,6 +945,13 @@ static const be_machine_t *mips_get_machine(const void *self) {
 	return NULL;
 }
 
+/**
+ * Return irp irgs in the desired order.
+ */
+static ir_graph **mips_get_irg_list(const void *self, ir_graph **irg_list) {
+	return NULL;
+}
+
 /**
  * Returns the libFirm configuration parameter for this backend.
  */
@@ -984,6 +991,7 @@ const arch_isa_if_t mips_isa_if = {
 	mips_get_libfirm_params,
 	mips_get_allowed_execution_units,
 	mips_get_machine,
+	mips_get_irg_list,
 };
 
 void be_init_arch_mips(void)

ir/be/ppc32/bearch_ppc32.c

@@ -884,6 +884,13 @@ static const be_machine_t *ppc32_get_machine(const void *self) {
 	return NULL;
 }
 
+/**
+ * Return irp irgs in the desired order.
+ */
+static ir_graph **ppc32_get_irg_list(const void *self, ir_graph **irg_list) {
+	return NULL;
+}
+
 /**
  * Returns the libFirm configuration parameter for this backend.
  */
@@ -923,6 +930,7 @@ const arch_isa_if_t ppc32_isa_if = {
 	ppc32_get_libfirm_params,
 	ppc32_get_allowed_execution_units,
 	ppc32_get_machine,
+	ppc32_get_irg_list,
 };
 
 void be_init_arch_ppc32(void)