use lower_CopyB as a phase

diff --git a/driver/firm_opt.c b/driver/firm_opt.c
index 1653f00..78d2e12 100644 (file)
--- a/driver/firm_opt.c
+++ b/driver/firm_opt.c
@@ -192,6 +192,11 @@ static void do_gcse(ir_graph *irg)
        set_opt_global_cse(0);
 }
 
+static void lower_blockcopy(ir_graph *irg)
+{
+       lower_CopyB(irg, 128, 4);
+}
+
 typedef enum opt_target {
        OPT_TARGET_IRG, /**< optimization function works on a single graph */
        OPT_TARGET_IRP  /**< optimization function works on the complete program */
@@ -255,6 +260,7 @@ static opt_config_t opts[] = {
        IRG("vrp",               set_vrp_data,             "value range propagation",                               OPT_FLAG_NONE),
        IRP("inline",            do_inline,                "inlining",                                              OPT_FLAG_NONE),
        IRP("lower-const",       lower_const_code,         "lowering of constant code",                             OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_NO_DUMP | OPT_FLAG_NO_VERIFY | OPT_FLAG_ESSENTIAL),
+       IRG("lower-blockcopy",   lower_blockcopy,          "replace small block copies with load/store sequences",  OPT_FLAG_NO_DUMP),
        IRP("target-lowering",   be_lower_for_target,      "lowering necessary for target architecture",            OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_ESSENTIAL),
        IRP("opt-func-call",     optimize_funccalls,       "function call optimization",                            OPT_FLAG_NONE),
        IRP("opt-proc-clone",    do_cloning,               "procedure cloning",                                     OPT_FLAG_NONE),
@@ -376,6 +382,7 @@ static void enable_safe_defaults(void)
        set_opt_enabled("confirm", true);
        set_opt_enabled("opt-load-store", true);
        set_opt_enabled("lower", true);
+       set_opt_enabled("lower-blockcopy", true);
        set_opt_enabled("deconv", true);
        set_opt_enabled("remove-confirms", true);
        set_opt_enabled("ivopts", true);
@@ -686,12 +693,7 @@ void gen_firm_finish(FILE *out, const char *input_filename)
        for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
                ir_graph *irg = get_irp_irg(i);
                do_irg_opt(irg, "control-flow");
-       }
-
-       /* lower copyb nodes */
-       for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
-               ir_graph *irg = get_irp_irg(i);
-               lower_CopyB(irg, 128, 4);
+               do_irg_opt(irg, "lower-blockcopy");
        }
 
        if (firm_dump.statistic & STAT_BEFORE_OPT) {