nsz Git - libfirm/blob - ir/opt/opt_manage.c

   1 #include "config.h"
   2
   3 #include <assert.h>
   4 #include <stdbool.h>
   5
   6 #include "irgraph_t.h"
   7 #include "irprog_t.h"
   8
   9 #include "iroptimize.h"
  10 #include "irgopt.h"
  11 #include "irdom.h"
  12 #include "iredges.h"
  13 #include "irouts.h"
  14 #include "irverify.h"
  15 #include "irdump.h"
  16 #include "opt_manage.h"
  17
  18 static void nop(ir_graph *irg) {
  19         (void)irg;
  20 }
  21
  22 void perform_irg_optimization(ir_graph *irg, optdesc_t *opt)
  23 {
  24         ir_graph_state_t new_irg_state;
  25         ir_graph_state_t required = opt->requirements;
  26         const bool dump = get_irp_optimization_dumps();
  27
  28         /* no bad block requires no unreachable code */
  29         if (required & IR_GRAPH_STATE_NO_BAD_BLOCKS)
  30                 required |= IR_GRAPH_STATE_NO_UNREACHABLE_BLOCKS;
  31
  32         /** Some workarounds because information is currently duplicated */
  33         // FIXME should not be necessary!
  34         if (loopinfo_inconsistent == get_irg_loopinfo_state(irg))
  35                 clear_irg_state(irg, IR_GRAPH_STATE_CONSISTENT_LOOPINFO);
  36
  37         /* assure that all requirements for the optimization are fulfilled */
  38 #define PREPARE(st,func) if (st & (required ^ irg->state)) {func(irg); set_irg_state(irg,st);}
  39         PREPARE(IR_GRAPH_STATE_ONE_RETURN,               normalize_one_return)
  40         PREPARE(IR_GRAPH_STATE_NO_CRITICAL_EDGES,        remove_critical_cf_edges)
  41         PREPARE(IR_GRAPH_STATE_NO_UNREACHABLE_BLOCKS,    remove_unreachable_blocks)
  42         PREPARE(IR_GRAPH_STATE_NO_BAD_BLOCKS,            remove_bads)
  43         PREPARE(IR_GRAPH_STATE_CONSISTENT_DOMINANCE,     assure_doms)
  44         PREPARE(IR_GRAPH_STATE_CONSISTENT_POSTDOMINANCE, assure_postdoms)
  45         PREPARE(IR_GRAPH_STATE_CONSISTENT_OUT_EDGES,     edges_assure)
  46         PREPARE(IR_GRAPH_STATE_CONSISTENT_OUTS,          assure_irg_outs)
  47         PREPARE(IR_GRAPH_STATE_CONSISTENT_LOOPINFO,      assure_cf_loop)
  48         PREPARE(IR_GRAPH_STATE_CONSISTENT_ENTITY_USAGE,  assure_irg_entity_usage_computed)
  49         PREPARE(IR_GRAPH_STATE_VALID_EXTENDED_BLOCKS,    compute_extbb)
  50
  51         /* now all the requirements for the optimization are fulfilled */
  52         if (dump)
  53                 dump_ir_graph(irg, opt->name);
  54
  55         new_irg_state = opt->optimization(irg);
  56
  57         if (dump)
  58                 dump_ir_graph(irg, opt->name);
  59
  60         /* unless the optimization returned that some state is retained,
  61          * we disable the corresponding irg state.
  62          * Since we currently duplicate information, sometimes another func must be called too.
  63          */
  64 #define INVALIDATE(state,func) if (!(state & new_irg_state)) {clear_irg_state(irg,state); func(irg);}
  65         INVALIDATE(IR_GRAPH_STATE_NO_CRITICAL_EDGES,        nop)
  66         INVALIDATE(IR_GRAPH_STATE_NO_UNREACHABLE_BLOCKS,    nop)
  67         INVALIDATE(IR_GRAPH_STATE_NO_BAD_BLOCKS,            nop)
  68         INVALIDATE(IR_GRAPH_STATE_ONE_RETURN,               nop)
  69         INVALIDATE(IR_GRAPH_STATE_CONSISTENT_DOMINANCE,     nop)
  70         INVALIDATE(IR_GRAPH_STATE_CONSISTENT_POSTDOMINANCE, nop)
  71         INVALIDATE(IR_GRAPH_STATE_CONSISTENT_OUTS,          nop)
  72         INVALIDATE(IR_GRAPH_STATE_CONSISTENT_OUT_EDGES,     edges_deactivate)
  73         INVALIDATE(IR_GRAPH_STATE_CONSISTENT_LOOPINFO,      set_irg_loopinfo_inconsistent)
  74         INVALIDATE(IR_GRAPH_STATE_CONSISTENT_ENTITY_USAGE,  nop)
  75         INVALIDATE(IR_GRAPH_STATE_VALID_EXTENDED_BLOCKS,    set_irg_extblk_inconsistent)
  76
  77         if (!(new_irg_state & IR_GRAPH_STATE_BROKEN_FOR_VERIFIER)) {
  78                 irg_verify(irg, VERIFY_ENFORCE_SSA);
  79         }
  80
  81 }