X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeprefalloc.c;h=b35947d72e90962b293e1de43af92a66c7ca145b;hb=b152c943b88744d5e212f86d315a36c7b43ae574;hp=ec4c89477fd4eb00cdb86b4617ca17d545833cb5;hpb=5244f95767968d8b59ef3f2031612b86474e2455;p=libfirm

diff --git a/ir/be/beprefalloc.c b/ir/be/beprefalloc.c
index ec4c89477..b35947d72 100644
--- a/ir/be/beprefalloc.c
+++ b/ir/be/beprefalloc.c
@@ -93,7 +93,7 @@ static unsigned                     n_regs;
 static unsigned                    *normal_regs;
 static int                         *congruence_classes;
 static ir_node                    **block_order;
-static int                          n_block_order;
+static size_t                       n_block_order;
 static int                          create_preferences        = true;
 static int                          create_congruence_classes = true;
 static int                          propagate_phi_registers   = true;
@@ -635,12 +635,12 @@ static bool try_optimistic_split(ir_node *to_split, ir_node *before,
 	ir_node               *original_insn;
 	ir_node               *block;
 	ir_node               *copy;
-	unsigned               r;
+	unsigned               r = 0;
 	unsigned               from_r;
 	unsigned               i;
 	allocation_info_t     *info = get_allocation_info(to_split);
 	reg_pref_t            *prefs;
-	float                  delta;
+	float                  delta = 0;
 	float                  split_threshold;
 
 	(void) pref;
@@ -747,7 +747,7 @@ static void assign_reg(const ir_node *block, ir_node *node,
 	ir_node                   *in_node;
 	unsigned                   i;
 	const unsigned            *allowed_regs;
-	unsigned                   r;
+	unsigned                   r = 0;
 
 	assert(!is_Phi(node));
 	/* preassigned register? */
@@ -1239,7 +1239,7 @@ static void enforce_constraints(ir_nodeset_t *live_nodes, ir_node *node,
 	permute_values(live_nodes, node, assignment);
 }
 
-/** test wether a node @p n is a copy of the value of node @p of */
+/** test whether a node @p n is a copy of the value of node @p of */
 static bool is_copy_of(ir_node *value, ir_node *test_value)
 {
 	allocation_info_t *test_info;
@@ -1736,13 +1736,13 @@ static int cmp_block_costs(const void *d1, const void *d2)
 
 static void determine_block_order(void)
 {
-	int i;
+	size_t    i;
 	ir_node **blocklist = be_get_cfgpostorder(irg);
-	int       n_blocks  = ARR_LEN(blocklist);
+	size_t    n_blocks  = ARR_LEN(blocklist);
 	int       dfs_num   = 0;
 	pdeq     *worklist  = new_pdeq();
 	ir_node **order     = XMALLOCN(ir_node*, n_blocks);
-	int       order_p   = 0;
+	size_t    order_p   = 0;
 
 	/* clear block links... */
 	for (i = 0; i < n_blocks; ++i) {
@@ -1753,9 +1753,9 @@ static void determine_block_order(void)
 	/* walk blocks in reverse postorder, the costs for each block are the
 	 * sum of the costs of its predecessors (excluding the costs on backedges
 	 * which we can't determine) */
-	for (i = n_blocks-1; i >= 0; --i) {
+	for (i = n_blocks; i > 0;) {
 		block_costs_t *cost_info;
-		ir_node *block = blocklist[i];
+		ir_node *block = blocklist[--i];
 
 		float execfreq   = (float)get_block_execfreq(execfreqs, block);
 		float costs      = execfreq;
@@ -1840,7 +1840,7 @@ static void determine_block_order(void)
  */
 static void be_pref_alloc_cls(void)
 {
-	int i;
+	size_t i;
 
 	lv = be_assure_liveness(irg);
 	be_liveness_assure_sets(lv);
@@ -1964,7 +1964,7 @@ static void be_pref_alloc(ir_graph *new_irg)
 	obstack_free(&obst, NULL);
 }
 
-BE_REGISTER_MODULE_CONSTRUCTOR(be_init_pref_alloc);
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_pref_alloc)
 void be_init_pref_alloc(void)
 {
 	static be_ra_t be_ra_pref = {