Commit 5933e03f authored by Christoph Mallon's avatar Christoph Mallon
Browse files

gvnpre: Put the obstack into struct pre_env instead of delegating it.

parent 8836d36b
......@@ -108,7 +108,7 @@ typedef struct elim_pair {
/** environment for the GVN-PRE algorithm */
typedef struct pre_env {
ir_graph *graph; /* current graph */
struct obstack *obst; /* obstack to allocate on */
struct obstack obst; /* obstack to allocate on */
ir_node *start_block; /* start block of the current graph */
ir_node *end_block; /* end block of the current graph */
ir_node *end_node; /* end node of the current graph */
......@@ -423,7 +423,7 @@ static ir_node *identify_or_remember(ir_node *irn)
*/
static void alloc_block_info(ir_node *block, pre_env *env)
{
block_info *info = OALLOC(env->obst, block_info);
block_info *info = OALLOC(&env->obst, block_info);
set_irn_link(block, info);
info->exp_gen = ir_valueset_new(16);
......@@ -1792,7 +1792,7 @@ static void eliminate(ir_node *irn, void *ctx)
DB((dbg, LEVEL_3, "Elim %+F(%+F) avail %+F\n", irn, value, expr));
if (expr != NULL && expr != irn) {
elim_pair *p = OALLOC(env->obst, elim_pair);
elim_pair *p = OALLOC(&env->obst, elim_pair);
p->old_node = irn;
p->new_node = expr;
......@@ -1948,7 +1948,6 @@ static void gvn_pre(ir_graph *irg, pre_env *env)
*/
void do_gvn_pre(ir_graph *irg)
{
struct obstack obst;
pre_env env;
ir_nodeset_t keeps;
optimization_state_t state;
......@@ -1978,9 +1977,7 @@ void do_gvn_pre(ir_graph *irg)
DEBUG_ONLY(init_stats();)
/* setup environment */
obstack_init(&obst);
env.graph = irg;
env.obst = &obst;
env.list = NULL;
env.start_block = get_irg_start_block(irg);
env.end_block = get_irg_end_block(irg);
......@@ -1988,6 +1985,7 @@ void do_gvn_pre(ir_graph *irg)
env.pairs = NULL;
env.keeps = &keeps;
env.last_idx = get_irg_last_idx(irg);
obstack_init(&env.obst);
/* Detect and set links of infinite loops to non-zero. */
analyse_loops(irg);
......@@ -2022,7 +2020,7 @@ void do_gvn_pre(ir_graph *irg)
DEBUG_ONLY(free_stats();)
ir_nodehashmap_destroy(&value_map);
obstack_free(&obst, NULL);
obstack_free(&env.obst, NULL);
ir_free_resources(irg, IR_RESOURCE_IRN_LINK | IR_RESOURCE_LOOP_LINK);
/* Pin the graph again.
......
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