2010-04-13 Richard Guenther <rguenther@suse.de>

[pf3gnuchains/gcc-fork.git] / gcc / regstat.c

diff --git a/gcc/regstat.c b/gcc/regstat.c
index 70ddfa4..cb4471b 100644 (file)
--- a/gcc/regstat.c
+++ b/gcc/regstat.c
@@ -39,7 +39,7 @@ along with GCC; see the file COPYING3.  If not see
 struct regstat_n_sets_and_refs_t *regstat_n_sets_and_refs;
 
 /*----------------------------------------------------------------------------
-   REG_N_SETS and REG_N_REFS.  
+   REG_N_SETS and REG_N_REFS.
    ----------------------------------------------------------------------------*/
 
 /* If a pass need to change these values in some magical way or or the
@@ -117,7 +117,7 @@ size_t reg_info_p_size;
    here.  */
 
 static void
-regstat_bb_compute_ri (unsigned int bb_index, 
+regstat_bb_compute_ri (unsigned int bb_index,
                       bitmap live, bitmap do_not_gen, bitmap artificial_uses,
                       bitmap local_live, bitmap local_processed)
 {
@@ -156,7 +156,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
          bitmap_set_bit (artificial_uses, regno);
        }
     }
-  
+
   FOR_BB_INSNS_REVERSE (bb, insn)
     {
       unsigned int uid = INSN_UID (insn);
@@ -164,7 +164,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
       bitmap_iterator bi;
       struct df_mw_hardreg **mws_rec;
       rtx link;
- 
+
       if (!NONDEBUG_INSN_P (insn))
        continue;
 
@@ -176,7 +176,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
          REG_LIVE_LENGTH (regno)++;
        }
       luid++;
-  
+
       bitmap_clear (do_not_gen);
 
       link = REG_NOTES (insn);
@@ -190,7 +190,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
       /* Process the defs.  */
       if (CALL_P (insn))
        {
-         bool can_throw = can_throw_internal (insn); 
+         bool can_throw = can_throw_internal (insn);
          bool set_jump = (find_reg_note (insn, REG_SETJMP, NULL) != NULL);
          EXECUTE_IF_SET_IN_BITMAP (live, 0, regno, bi)
            {
@@ -198,7 +198,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
              REG_FREQ_CALLS_CROSSED (regno) += REG_FREQ_FROM_BB (bb);
              if (can_throw)
                REG_N_THROWING_CALLS_CROSSED (regno)++;
-             
+
              /* We have a problem with any pseudoreg that lives
                 across the setjmp.  ANSI says that if a user variable
                 does not change in value between the setjmp and the
@@ -214,17 +214,17 @@ regstat_bb_compute_ri (unsigned int bb_index,
                bitmap_set_bit (setjmp_crosses, regno);
            }
        }
-         
+
       /* We only care about real sets for calls.  Clobbers only
         may clobbers cannot be depended on.  */
       for (mws_rec = DF_INSN_UID_MWS (uid); *mws_rec; mws_rec++)
        {
-         struct df_mw_hardreg *mws = *mws_rec; 
-         if (DF_MWS_REG_DEF_P (mws)) 
+         struct df_mw_hardreg *mws = *mws_rec;
+         if (DF_MWS_REG_DEF_P (mws))
            {
              bool all_dead = true;
              unsigned int r;
-             
+
              for (r=mws->start_regno; r <= mws->end_regno; r++)
                if ((bitmap_bit_p (live, r))
                    || bitmap_bit_p (artificial_uses, r))
@@ -232,7 +232,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
                    all_dead = false;
                    break;
                  }
-             
+
              if (all_dead)
                {
                  unsigned int regno = mws->start_regno;
@@ -242,7 +242,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
                }
            }
        }
-      
+
       /* All of the defs except the return value are some sort of
         clobber.  This code is for the return.  */
       for (def_rec = DF_INSN_UID_DEFS (uid); *def_rec; def_rec++)
@@ -252,7 +252,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
              || (!(DF_REF_FLAGS (def) & (DF_REF_MUST_CLOBBER | DF_REF_MAY_CLOBBER))))
            {
              unsigned int dregno = DF_REF_REGNO (def);
-             
+
              if (bitmap_bit_p (live, dregno))
                {
                  /* If we have seen this regno, then it has already been
@@ -275,7 +275,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
                {
                  REG_LIVE_LENGTH (dregno)++;
                }
-             
+
              if (dregno >= FIRST_PSEUDO_REGISTER)
                {
                  REG_FREQ (dregno) += REG_FREQ_FROM_BB (bb);
@@ -284,16 +284,16 @@ regstat_bb_compute_ri (unsigned int bb_index,
                  else if (REG_BASIC_BLOCK (dregno) != bb->index)
                    REG_BASIC_BLOCK (dregno) = REG_BLOCK_GLOBAL;
                }
-             
+
              if (!(DF_REF_FLAGS (def) & (DF_REF_MUST_CLOBBER + DF_REF_MAY_CLOBBER)))
                bitmap_set_bit (do_not_gen, dregno);
-             
+
              /* Kill this register if it is not a subreg store or conditional store.  */
              if (!(DF_REF_FLAGS (def) & (DF_REF_PARTIAL | DF_REF_CONDITIONAL)))
                bitmap_clear_bit (live, dregno);
            }
        }
-      
+
       for (use_rec = DF_INSN_UID_USES (uid); *use_rec; use_rec++)
        {
          df_ref use = *use_rec;
@@ -307,7 +307,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
              else if (REG_BASIC_BLOCK (uregno) != bb->index)
                REG_BASIC_BLOCK (uregno) = REG_BLOCK_GLOBAL;
            }
-         
+
          if (!bitmap_bit_p (live, uregno))
            {
              /* This register is now live.  */
@@ -326,7 +326,7 @@ regstat_bb_compute_ri (unsigned int bb_index,
            }
        }
     }
-  
+
   /* Add the length of the block to all of the registers that were not
      referenced, but still live in this block.  */
   bitmap_and_compl_into (live, local_processed);
@@ -376,8 +376,8 @@ regstat_compute_ri (void)
     {
       REG_BASIC_BLOCK (regno) = REG_BLOCK_UNKNOWN;
       REG_LIVE_LENGTH (regno) = -1;
-    }    
-  
+    }
+
   BITMAP_FREE (local_live);
   BITMAP_FREE (local_processed);
   timevar_pop (TV_REG_STATS);
@@ -391,14 +391,14 @@ regstat_free_ri (void)
 {
   gcc_assert (reg_info_p);
   reg_info_p_size = 0;
-  free (reg_info_p); 
+  free (reg_info_p);
   reg_info_p = NULL;
 
   BITMAP_FREE (setjmp_crosses);
 }
 
 
-/* Return a bitmap containing the set of registers that cross a setjmp.  
+/* Return a bitmap containing the set of registers that cross a setjmp.
    The client should not change or delete this bitmap.  */
 
 bitmap
@@ -408,7 +408,7 @@ regstat_get_setjmp_crosses (void)
 }
 
 /*----------------------------------------------------------------------------
-   Process REG_N_CALLS_CROSSED.  
+   Process REG_N_CALLS_CROSSED.
 
    This is used by sched_deps.  A good implementation of sched-deps
    would really process the blocks directly rather than going through
@@ -447,12 +447,12 @@ regstat_bb_compute_calls_crossed (unsigned int bb_index, bitmap live)
       if ((DF_REF_FLAGS (use) & DF_REF_AT_TOP) == 0)
        bitmap_set_bit (live, DF_REF_REGNO (use));
     }
-  
+
   FOR_BB_INSNS_REVERSE (bb, insn)
     {
       unsigned int uid = INSN_UID (insn);
       unsigned int regno;
- 
+
       if (!INSN_P (insn))
        continue;
 
@@ -466,7 +466,7 @@ regstat_bb_compute_calls_crossed (unsigned int bb_index, bitmap live)
              REG_FREQ_CALLS_CROSSED (regno) += REG_FREQ_FROM_BB (bb);
            }
        }
-         
+
       /* All of the defs except the return value are some sort of
         clobber.  This code is for the return.  */
       for (def_rec = DF_INSN_UID_DEFS (uid); *def_rec; def_rec++)
@@ -480,7 +480,7 @@ regstat_bb_compute_calls_crossed (unsigned int bb_index, bitmap live)
                bitmap_clear_bit (live, DF_REF_REGNO (def));
            }
        }
-      
+
       for (use_rec = DF_INSN_UID_USES (uid); *use_rec; use_rec++)
        {
          df_ref use = *use_rec;
@@ -522,7 +522,7 @@ regstat_free_calls_crossed (void)
 {
   gcc_assert (reg_info_p);
   reg_info_p_size = 0;
-  free (reg_info_p); 
+  free (reg_info_p);
   reg_info_p = NULL;
 }