Fixed some warning for optimize build.

ir/be/bessadestr.c

@@ -248,7 +248,9 @@ static void ssa_destruction_check_walker(ir_node *block, void *data)
 		if (!arch_irn_consider_in_reg_alloc(cls, phi))
 			continue;
 
+#ifndef NDEBUG
 		const arch_register_t *phi_reg = arch_get_irn_register(phi);
+#endif
 		/* iterate over all args of phi */
 		for (int i = 0, max = get_irn_arity(phi); i < max; ++i) {
 			ir_node                   *arg = get_irn_n(phi, i);
@@ -256,8 +258,10 @@ static void ssa_destruction_check_walker(ir_node *block, void *data)
 			if (arch_register_req_is(req, ignore))
 				continue;
 
+#ifndef NDEBUG
 			const arch_register_t *arg_reg = arch_get_irn_register(arg);
 			assert(phi_reg == arg_reg && "Error: Registers of phi and arg differ");
+#endif
 		}
 	}
 }

ir/ir/ircons_t.h

@@ -30,6 +30,9 @@ static inline void verify_new_node(ir_graph *irg, ir_node *node)
 #ifdef DEBUG_libfirm
 	if (UNLIKELY(!irn_verify_irg(node, irg)))
 		abort();
+#else
+	(void)irg;
+	(void)node;
 #endif
 }
 

ir/ir/irverify.c

@@ -933,6 +933,7 @@ static bool check_dominance_for_node(const ir_node *use)
 	return fine;
 }
 
+#ifdef DEBUG_libfirm
 /**
  * Check if node is stored on the obstack belonging to the ir graph
  */
@@ -944,6 +945,7 @@ static bool check_irn_storage(ir_graph *irg, const ir_node *node)
 	}
 	return true;
 }
+#endif
 
 int irn_verify_irg(const ir_node *n, ir_graph *irg)
 {

ir/tv/fltcalc.c

@@ -1246,12 +1246,11 @@ void init_fltcalc(int precision)
 		calc_buffer = (fp_value*) xmalloc(calc_buffer_size);
 		memset(calc_buffer, 0, calc_buffer_size);
 
-		const size_t long_double_size = sizeof(long double);
 #if LDBL_MANT_DIG == 64
-		assert(long_double_size == 12 || long_double_size == 16);
+		assert(sizeof(long double) == 12 || sizeof(long double) == 16);
 		long_double_desc = (float_descriptor_t) { 15, 63, 1 };
 #elif LDBL_MANT_DIG == 53
-		assert(long_double_size == 8);
+		assert(sizeof(long double) == 8);
 		long_double_desc = (float_descriptor_t) { 11, 52, 0 };
 #else
 	#error "Unsupported long double format"