#include "irgmod.h"
#include "irgopt.h"
#include "irnode_t.h"
+#include "iropt_t.h"
#include "iredges_t.h"
#include "irgwalk.h"
#include "irprintf.h"
#include "irpass_t.h"
#include "tv.h"
#include "vrp.h"
+#include "opt_manage.h"
-DEBUG_ONLY(static firm_dbg_module_t *dbg);
+DEBUG_ONLY(static firm_dbg_module_t *dbg;)
static inline int imin(int a, int b) { return a < b ? a : b; }
-static bool is_optimizable_node(const ir_node *node)
+static bool is_optimizable_node(const ir_node *node, ir_mode *dest_mode)
{
switch (get_irn_opcode(node)) {
case iro_Add:
case iro_Not:
case iro_Or:
case iro_Phi:
- case iro_Shl:
case iro_Sub:
return true;
+ case iro_Shl: {
+ int modulo_shift = get_mode_modulo_shift(dest_mode);
+ int old_shift = get_mode_modulo_shift(get_irn_mode(node));
+ /* bail out if modulo shift changes */
+ if (modulo_shift != old_shift)
+ return false;
+ return true;
+ }
+
default:
return false;
}
return 1;
}
+ if (ir_zero_when_converted(node, dest_mode)) {
+ return -1;
+ }
+
#if 0 // TODO
/* Take the minimum of the conversion costs for Phi predecessors as only one
* branch is actually executed at a time */
return get_conv_costs(get_Conv_op(node), dest_mode) - 1;
}
- if (!is_optimizable_node(node)) {
+ if (!is_optimizable_node(node, dest_mode)) {
return 1;
}
return conv_transform(get_Conv_op(node), dest_mode);
}
- if (!is_optimizable_node(node)) {
+ if (!is_optimizable_node(node, dest_mode)) {
return place_conv(node, dest_mode);
}
}
}
-int conv_opt(ir_graph *irg)
+static ir_graph_state_t do_deconv(ir_graph *irg)
{
bool changed;
- bool invalidate = false;
FIRM_DBG_REGISTER(dbg, "firm.opt.conv");
DB((dbg, LEVEL_1, "===> Performing conversion optimization on %+F\n", irg));
- edges_assure(irg);
do {
changed = false;
irg_walk_graph(irg, NULL, conv_opt_walker, &changed);
local_optimize_graph(irg);
- invalidate |= changed;
} while (changed);
- return invalidate;
+ return 0;
+}
+
+static optdesc_t opt_deconv = {
+ "deconv",
+ IR_GRAPH_STATE_CONSISTENT_OUT_EDGES,
+ do_deconv,
+};
+
+int conv_opt(ir_graph *irg)
+{
+ perform_irg_optimization(irg, &opt_deconv);
+ return 1;
}
/* Creates an ir_graph pass for conv_opt. */