X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fana%2Firscc.c;h=13c1d7c214e10ebb0678318df9c465a8a7c858e1;hb=78bac126e7f9ca55761ab892ebfa9c19a4a65fcf;hp=0da5fd65a8a5fac86f1343fb5abbadd34e7cf948;hpb=ce6161a7e42a48f7422b7babcc64d8ace18e2687;p=libfirm

diff --git a/ir/ana/irscc.c b/ir/ana/irscc.c
index 0da5fd65a..13c1d7c21 100644
--- a/ir/ana/irscc.c
+++ b/ir/ana/irscc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -58,7 +58,7 @@ static int loop_node_cnt = 0;
 /** Counter to generate depth first numbering of visited nodes. */
 static int current_dfn = 1;
 
-static int max_loop_depth = 0;
+static unsigned max_loop_depth = 0;
 
 void link_to_reg_end(ir_node *n, void *env);
 void set_projx_link(ir_node *cb_projx, ir_node *end_projx);
@@ -197,7 +197,7 @@ ir_loop * get_irn_loop(ir_node *n)
 /**********************************************************************/
 
 static ir_node **stack = NULL;
-static int tos = 0;                /* top of stack */
+static size_t tos = 0;                /* top of stack */
 
 /**
  * initializes the stack
@@ -229,10 +229,10 @@ static void finish_stack(void)
 static inline void push(ir_node *n)
 {
 	if (tos == ARR_LEN(stack)) {
-		int nlen = ARR_LEN(stack) * 2;
+		size_t nlen = ARR_LEN(stack) * 2;
 		ARR_RESIZE(ir_node *, stack, nlen);
 	}
-	stack [tos++] = n;
+	stack[tos++] = n;
 	mark_irn_in_stack(n);
 }
 
@@ -243,7 +243,10 @@ static inline void push(ir_node *n)
  */
 static inline ir_node *pop(void)
 {
-	ir_node *n = stack[--tos];
+	ir_node *n;
+
+	assert(tos > 0);
+	n = stack[--tos];
 	mark_irn_not_in_stack(n);
 	return n;
 }
@@ -271,7 +274,7 @@ static inline void pop_scc_to_loop(ir_node *n)
    can't they have two loops as sons? Does it never get that far? ) */
 static void close_loop(ir_loop *l)
 {
-	int last = get_loop_n_elements(l) - 1;
+	size_t last = get_loop_n_elements(l) - 1;
 	loop_element lelement = get_loop_element(l, last);
 	ir_loop *last_son = lelement.son;
 
@@ -821,7 +824,7 @@ void free_loop_information(ir_graph *irg)
 
 void free_all_loop_information(void)
 {
-	int i;
+	size_t i;
 	for (i = 0; i < get_irp_n_irgs(); i++) {
 		free_loop_information(get_irp_irg(i));
 	}
@@ -833,7 +836,7 @@ void free_all_loop_information(void)
 
 static int is_loop_variant(ir_loop *l, ir_loop *b)
 {
-	int i, n_elems;
+	size_t i, n_elems;
 
 	if (l == b) return 1;