X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fana%2Fexecution_frequency.c;h=a005f4dcd1fef5c0ac0dcd05e06895c333520968;hb=e775a978fff2841e0722c47f13545b54d48b8f98;hp=e740c0bf0483b46060ad66f53be6c1d9efcdcc1a;hpb=c19953ed6384686c23fb9d720a7cfdda3d443d19;p=libfirm

diff --git a/ir/ana/execution_frequency.c b/ir/ana/execution_frequency.c
index e740c0bf0..a005f4dcd 100644
--- a/ir/ana/execution_frequency.c
+++ b/ir/ana/execution_frequency.c
@@ -1,31 +1,48 @@
 /*
- * Project:     libFIRM
- * File name:   ir/ana/execution_frequency.c
- * Purpose:     Compute an estimate of basic block executions.
- * Author:      Goetz Lindenmaier
- * Modified by:
- * Created:     5.11.2004
- * CVS-ID:      $Id$
- * Copyright:   (c) 2004 Universität Karlsruhe
- * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+/**
+ * @file
+ * @brief     Compute an estimate of basic block executions.
+ * @author    Goetz Lindenmaier
+ * @date      5.11.2004
+ * @version   $Id$
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
 #include "execution_frequency.h"
 
-#include "firm_common_t.h"
 #include "set.h"
 #include "pdeq.h"
+#include "hashptr.h"
+#include "error.h"
 
-#include "irprog.h"
+#include "irprog_t.h"
+#include "irgraph_t.h"
 #include "irnode_t.h"
 #include "irloop.h"
 #include "irgwalk.h"
 
 #include "interval_analysis.h"
 
+void set_irp_exec_freq_state(exec_freq_state s);
+
 /*------------------------------------------------------------------*/
 /* A hashmap mapping the frequency to block and loop nodes.  Block
  * and loop nodes are regions.                                      */
@@ -40,30 +57,35 @@ typedef struct {
 /* We use this set for all nodes in all irgraphs. */
 static set *exec_freq_set = NULL;
 
-static int exec_freq_cmp(const void *e1, const void *e2, size_t size) {
+static int exec_freq_cmp(const void *e1, const void *e2, size_t size)
+{
   reg_exec_freq *ef1 = (reg_exec_freq *)e1;
   reg_exec_freq *ef2 = (reg_exec_freq *)e2;
+  (void) size;
+
   return (ef1->reg != ef2->reg);
 }
 
-static INLINE unsigned int exec_freq_hash(void *e) {
-  unsigned int v = (unsigned int) ((reg_exec_freq *)e)->reg;
-  return v ^ (v>>8);
+static inline unsigned int exec_freq_hash(reg_exec_freq *e)
+{
+  return HASH_PTR(e->reg);
 }
 
-static INLINE void set_region_exec_freq(void *reg, double freq) {
+static inline void set_region_exec_freq(void *reg, double freq)
+{
   reg_exec_freq ef;
   ef.reg  = reg;
   ef.freq = freq;
   set_insert(exec_freq_set, &ef, sizeof(ef), exec_freq_hash(&ef));
 }
 
-INLINE double get_region_exec_freq(void *reg) {
+double get_region_exec_freq(void *reg)
+{
   reg_exec_freq ef, *found;
   ef.reg  = reg;
   assert(exec_freq_set);
 
-  found = set_find(exec_freq_set, &ef, sizeof(ef), exec_freq_hash(&ef));
+  found = (reg_exec_freq*) set_find(exec_freq_set, &ef, sizeof(ef), exec_freq_hash(&ef));
 
   /* Not found if information is invalid. */
   if (found)
@@ -73,11 +95,13 @@ INLINE double get_region_exec_freq(void *reg) {
 }
 
 /* Returns the number of times the block is executed. */
-double     get_Block_exec_freq(ir_node *b) {
+double     get_Block_exec_freq(ir_node *b)
+{
   return get_region_exec_freq((void *)b);
 }
 
-double get_irn_exec_freq(ir_node *n) {
+double get_irn_exec_freq(ir_node *n)
+{
   if (!is_Block(n)) n = get_nodes_block(n);
   return get_Block_exec_freq(n);
 }
@@ -107,18 +131,20 @@ static int just_passed_a_Raise = 0;
 static ir_node *Cond_list = NULL;
 
 /* We do not use an extra set, as Projs are not yet in the existing one. */
-void set_ProjX_probability(ir_node *n, Cond_prob prob) {
+static void set_ProjX_probability(ir_node *n, Cond_prob prob)
+{
   reg_exec_freq ef;
   ef.reg  = n;
   ef.prob = prob;
   set_insert(exec_freq_set, &ef, sizeof(ef), exec_freq_hash(&ef));
 }
 
-Cond_prob get_ProjX_probability(ir_node *n) {
+static Cond_prob get_ProjX_probability(ir_node *n)
+{
   reg_exec_freq ef, *found;
   ef.reg  = n;
 
-  found = set_find(exec_freq_set, &ef, sizeof(ef), exec_freq_hash(&ef));
+  found = (reg_exec_freq*) set_find(exec_freq_set, &ef, sizeof(ef), exec_freq_hash(&ef));
 
   if (found)
     return (Cond_prob)found->prob;
@@ -128,16 +154,16 @@ Cond_prob get_ProjX_probability(ir_node *n) {
 
 /* A walker that only visits the nodes we want to see. */
 
-static void
-my_irg_walk_2_both(ir_node *node, irg_walk_func *pre, irg_walk_func *post, void * env) {
+static void my_irg_walk_2_both(ir_node *node, irg_walk_func *pre, irg_walk_func *post, void * env)
+{
   int i;
   set_irn_visited(node, current_ir_graph->visited);
 
   pre(node, env);
 
-  if (node->op != op_Block) {
+  if (!is_Block(node)) {
     ir_node *pred;
-    if (node->op == op_Proj)
+    if (is_Proj(node))
       pred = get_irn_n(node, 0);
     else
       pred = get_irn_n(node, -1);
@@ -149,40 +175,43 @@ my_irg_walk_2_both(ir_node *node, irg_walk_func *pre, irg_walk_func *post, void
     for (i = get_irn_arity(node) - 1; i >= 0; --i) {
       ir_node *pred = get_irn_n(node, i);
       if (pred->visited < current_ir_graph->visited)
-	my_irg_walk_2_both(pred, pre, post, env);
+        my_irg_walk_2_both(pred, pre, post, env);
     }
   }
 
-  if (node->op == op_End) {
+  if (is_End(node)) {
     for (i = get_irn_arity(node) - 1; i >= 0; --i) {
       ir_node *pred = get_irn_n(node, i);
       if ((pred->op == op_Block) && (pred->visited < current_ir_graph->visited))
-	my_irg_walk_2_both(pred, pre, post, env);
+        my_irg_walk_2_both(pred, pre, post, env);
     }
   }
 
   post(node, env);
 }
-static void my_irg_walk_current_graph(irg_walk_func *pre, irg_walk_func *post, void *env) {
+static void my_irg_walk_current_graph(irg_walk_func *pre, irg_walk_func *post, void *env)
+{
   inc_irg_visited(current_ir_graph);
   my_irg_walk_2_both(get_irg_end(current_ir_graph), pre, post, env);
 }
 
 
-static void walk_pre(ir_node *n, void *env) {
-
-  if (get_irn_op(n) == op_Raise)
+static void walk_pre(ir_node *n, void *env)
+{
+  (void) env;
+  if (is_Raise(n))
     just_passed_a_Raise = 1;
 
-  if (   (get_irn_op(n) == op_Proj)
-      && (get_irn_op(get_Proj_pred(n)) == op_Cond)
-      && (just_passed_a_Raise)) {
+  if (get_irn_op(n) == op_Proj  &&
+      is_Cond(get_Proj_pred(n)) &&
+      just_passed_a_Raise) {
+    ir_node *other_proj;
     ir_node *c = get_Proj_pred(n);
 
     /* If we already visited the other Proj, and it also leads to a Raise,
        we are in the middle of something. Continue searching. */
     assert(get_irn_n_outs(c) == 2 && "encountered a switch cond");
-    ir_node *other_proj = get_irn_out(c, 0);
+    other_proj = get_irn_out(c, 0);
     if (other_proj == n) other_proj = get_irn_out(c, 1);
     if (get_ProjX_probability(other_proj) == Cond_prob_exception_taken) {
       set_ProjX_probability(other_proj, Cond_prob_was_exception_taken);
@@ -193,21 +222,23 @@ static void walk_pre(ir_node *n, void *env) {
     }
   }
 
-  if (get_irn_op(n) == op_Cond) {
+  if (is_Cond(n)) {
     set_irn_link(n, Cond_list);
     Cond_list = n;
   }
 }
 
-static void walk_post(ir_node *n, void *env) {
-
-  if (get_irn_op(n) == op_Raise)
+static void walk_post(ir_node *n, void *env)
+{
+  (void) env;
+  if (is_Raise(n))
     just_passed_a_Raise = 0;
 
-  if (   (get_irn_op(n) == op_Proj)
-      && (get_irn_op(get_Proj_pred(n)) == op_Cond)
-      && ((get_ProjX_probability(n) == Cond_prob_exception_taken)    ||
-	  (get_ProjX_probability(n) == Cond_prob_was_exception_taken)   )) {
+  if (get_irn_op(n) == op_Proj  &&
+      is_Cond(get_Proj_pred(n)) && (
+        get_ProjX_probability(n) == Cond_prob_exception_taken ||
+        get_ProjX_probability(n) == Cond_prob_was_exception_taken
+      )) {
     just_passed_a_Raise = 1;
   }
 }
@@ -215,27 +246,32 @@ static void walk_post(ir_node *n, void *env) {
 /** Precompute which Conds test for an exception.
  *
  *  Operates on current_ir_graph. */
-void precompute_cond_evaluation(void) {
+static void precompute_cond_evaluation(void)
+{
   ir_node *c;
 
-  compute_outs(current_ir_graph);
+  compute_irg_outs(current_ir_graph);
 
   just_passed_a_Raise = 0;
   Cond_list = NULL;
   my_irg_walk_current_graph(walk_pre, walk_post, NULL);
 
-  for (c = Cond_list; c; c = get_irn_link(c)) {
+  for (c = Cond_list; c; c = (ir_node*)get_irn_link(c)) {
+    ir_node *p0, *p1;
+
     assert(get_irn_n_outs(c) == 2 && "encountered a switch cond");
-    ir_node *p0 = get_irn_out(c, 0);
-    ir_node *p1 = get_irn_out(c, 1);
+    p0 = get_irn_out(c, 0);
+    p1 = get_irn_out(c, 1);
 
     /* both are exceptions */
     if ((get_ProjX_probability(p0) == Cond_prob_exception_taken) &&
-	(get_ProjX_probability(p1) == Cond_prob_exception_taken)   ) {
-      assert(0 && "I tried to avoid these!");
+        (get_ProjX_probability(p1) == Cond_prob_exception_taken)   ) {
+      panic("I tried to avoid these!");
+#if 0
       /* It's a */
       set_ProjX_probability(p0, Cond_prob_normal);
       set_ProjX_probability(p1, Cond_prob_normal);
+#endif
     }
 
     /* p0 is exception */
@@ -256,12 +292,13 @@ void precompute_cond_evaluation(void) {
   }
 }
 
-int is_fragile_Proj(ir_node *n) {
+int is_fragile_Proj(ir_node *n)
+{
   return is_Proj(n) && (get_ProjX_probability(n) == Cond_prob_exception_taken);
 }
 
 /*------------------------------------------------------------------*/
-/* The algorithm to compute the execution freqencies.
+/* The algorithm to compute the execution frequencies.
  *
  * Walk the control flow loop tree which we consider the interval
  * tree.  Compute the execution for the lowest loop, add inner loops
@@ -271,15 +308,18 @@ int is_fragile_Proj(ir_node *n) {
 
 static double exception_prob = 0.001;
 
-static INLINE int is_loop_head(ir_node *cond) {
-  return false;
+static inline int is_loop_head(ir_node *cond)
+{
+  (void) cond;
+  return 0;
 }
 
 /** Weight a single region in edge.
  *
  *  Given all outs of the predecessor region, we can compute the weight of
  *  this single edge. */
-static INLINE double get_weighted_region_exec_freq(void *reg, int pos) {
+static inline double get_weighted_region_exec_freq(void *reg, int pos)
+{
   void *pred_reg        = get_region_in(reg, pos);
   double res, full_freq = get_region_exec_freq (pred_reg);
   int n_outs            = get_region_n_outs    (pred_reg);
@@ -288,11 +328,11 @@ static INLINE double get_weighted_region_exec_freq(void *reg, int pos) {
   ir_node *cfop;
   if (is_ir_node(reg)) {
     cfop = get_Block_cfgpred((ir_node *)reg, pos);
-    if (is_Proj(cfop) && (get_irn_op(get_Proj_pred(cfop)) != op_Cond))
+    if (is_Proj(cfop) && !is_Cond(get_Proj_pred(cfop)))
       cfop = skip_Proj(cfop);
   } else {
     assert(is_ir_loop(reg));
-    cfop = get_loop_cfop(reg, pos);
+    cfop = (ir_node*)get_loop_cfop(reg, pos);
   }
 
   if (is_fragile_op(cfop) || is_fragile_Proj(cfop)) {
@@ -306,12 +346,11 @@ static INLINE double get_weighted_region_exec_freq(void *reg, int pos) {
   return res;
 }
 
-static INLINE void compute_region_freqency(void *reg, double head_weight) {
+static inline void compute_region_freqency(void *reg, double head_weight)
+{
   int i, n_ins = get_region_n_ins(reg);
   double my_freq = 0;
 
-  //printf("head weight %lf: ", head_weight); DDMR(reg);
-
   for (i = 0; i < n_ins; ++i) {
     void *pred_reg = get_region_in(reg, i);
     if (pred_reg) {
@@ -326,15 +365,18 @@ static INLINE void compute_region_freqency(void *reg, double head_weight) {
   set_region_exec_freq(reg, my_freq);
 }
 
-static void check_proper_head(ir_loop *l, void *reg) {
+static void check_proper_head(ir_loop *l, void *reg)
+{
   int i, n_ins = get_region_n_ins(reg);
+  (void) l;
   for (i = 0; i < n_ins; ++i) {
     assert(!get_region_in(reg, i));
   }
 }
 
 /* Compute the ex freq for current_ir_graph */
-static void compute_frequency(int default_loop_weight) {
+static void compute_frequency(int default_loop_weight)
+{
   ir_loop *outermost_l = get_irg_loop(current_ir_graph);
   pdeq *block_worklist = new_pdeq1(outermost_l);
 
@@ -344,9 +386,9 @@ static void compute_frequency(int default_loop_weight) {
 
   while (!pdeq_empty(block_worklist)) {
     ir_loop *l = (ir_loop *)pdeq_getl(block_worklist);
-    int i, n_elems = get_loop_n_elements(l);
+    size_t i, n_elems = get_loop_n_elements(l);
 
-    /* The header is initialized with the freqency of the full loop times the iteration weight. */
+    /* The header is initialized with the frequency of the full loop times the iteration weight. */
     check_proper_head(l, get_loop_element(l, 0).son);
 
     for (i = 0; i < n_elems; ++i) {
@@ -364,7 +406,8 @@ static void compute_frequency(int default_loop_weight) {
  * irg:                 The graph to be analyzed.
  * default_loop_weight: The number of executions of a loop.
  */
-void compute_execution_frequency(ir_graph *irg, int default_loop_weight, double exception_probability) {
+void compute_execution_frequency(ir_graph *irg, int default_loop_weight, double exception_probability)
+{
   ir_graph *rem = current_ir_graph;
   current_ir_graph = irg;
   exception_prob = exception_probability;
@@ -374,6 +417,10 @@ void compute_execution_frequency(ir_graph *irg, int default_loop_weight, double
   construct_intervals(current_ir_graph);
   compute_frequency(default_loop_weight);
 
+  set_irg_exec_freq_state(irg, exec_freq_consistent);
+  if (get_irp_exec_freq_state() == exec_freq_none)
+    set_irp_exec_freq_state(exec_freq_inconsistent);
+
   /*
     dump_loop_tree     (current_ir_graph, "-execfreq");
     dump_ir_block_graph(current_ir_graph, "-execfreq");
@@ -384,16 +431,67 @@ void compute_execution_frequency(ir_graph *irg, int default_loop_weight, double
 }
 
 
-void compute_execution_frequencies(int default_loop_weight, double exception_probability) {
-  int i, n_irgs = get_irp_n_irgs();
+void compute_execution_frequencies(int default_loop_weight, double exception_probability)
+{
+  size_t i, n_irgs = get_irp_n_irgs();
   free_intervals();
   for (i = 0; i < n_irgs; ++i) {
     compute_execution_frequency(get_irp_irg(i), default_loop_weight, exception_probability);
   }
+  set_irp_exec_freq_state(exec_freq_consistent);
 }
 
 /** free occupied memory, reset */
-void free_execution_frequency(void) {
+void free_execution_frequency(void)
+{
+  size_t i, n_irgs = get_irp_n_irgs();
   free_intervals();
   del_set(exec_freq_set);
+
+  for (i = 0; i < n_irgs; ++i)
+    set_irg_exec_freq_state(get_irp_irg(i), exec_freq_none);
+  set_irp_exec_freq_state(exec_freq_none);
+}
+
+exec_freq_state get_irg_exec_freq_state(ir_graph *irg)
+{
+  return irg->execfreq_state;
+}
+void            set_irg_exec_freq_state(ir_graph *irg, exec_freq_state s)
+{
+  if ((get_irp_exec_freq_state() == exec_freq_consistent && s != exec_freq_consistent) ||
+      (get_irp_exec_freq_state() == exec_freq_none       && s != exec_freq_none))
+    irp->execfreq_state = exec_freq_inconsistent;
+  irg->execfreq_state = s;
+}
+
+/* Sets irg and irp exec freq state to inconsistent if it is set to consistent. */
+void            set_irg_exec_freq_state_inconsistent(ir_graph *irg)
+{
+  if (get_irg_exec_freq_state(irg) == exec_freq_consistent)
+    set_irg_exec_freq_state(irg, exec_freq_inconsistent);
+}
+
+void set_irp_exec_freq_state(exec_freq_state s)
+{
+  irp->execfreq_state = s;
+}
+
+exec_freq_state get_irp_exec_freq_state(void)
+{
+  return irp->execfreq_state;
+}
+
+/* Sets irp and all irg exec freq states to inconsistent if it is set to consistent. */
+void            set_irp_exec_freq_state_inconsistent(void)
+{
+	if (get_irp_exec_freq_state() != exec_freq_none) {
+		size_t i, n_irgs = get_irp_n_irgs();
+		set_irp_exec_freq_state(exec_freq_inconsistent);
+		for (i = 0; i < n_irgs; ++i) {
+			ir_graph *irg = get_irp_irg(i);
+			if (get_irg_exec_freq_state(irg) != exec_freq_none)
+				irg->execfreq_state = exec_freq_inconsistent;
+		}
+	}
 }