* alias.c: Follow spelling conventions.

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

diff --git a/gcc/global.c b/gcc/global.c
index d563608..c808e20 100644 (file)
--- a/gcc/global.c
+++ b/gcc/global.c
@@ -1,6 +1,6 @@
 /* Allocate registers for pseudo-registers that span basic blocks.
    Copyright (C) 1987, 1988, 1991, 1994, 1996, 1997, 1998,
 /* Allocate registers for pseudo-registers that span basic blocks.
    Copyright (C) 1987, 1988, 1991, 1994, 1996, 1997, 1998,

-   1999, 2000, 2002 Free Software Foundation, Inc.
+   1999, 2000, 2002, 2003 Free Software Foundation, Inc.

 
 This file is part of GCC.
 
 
 This file is part of GCC.
 


@@ -289,24 +289,23 @@ static int n_regs_set;
 
 static HARD_REG_SET eliminable_regset;
 
 
 static HARD_REG_SET eliminable_regset;
 

-static int allocno_compare     PARAMS ((const PTR, const PTR));
-static void global_conflicts   PARAMS ((void));
-static void mirror_conflicts   PARAMS ((void));
-static void expand_preferences PARAMS ((void));
-static void prune_preferences  PARAMS ((void));
-static void find_reg           PARAMS ((int, HARD_REG_SET, int, int, int));
-static void record_one_conflict PARAMS ((int));
-static void record_conflicts   PARAMS ((int *, int));
-static void mark_reg_store     PARAMS ((rtx, rtx, void *));
-static void mark_reg_clobber   PARAMS ((rtx, rtx, void *));
-static void mark_reg_conflicts PARAMS ((rtx));
-static void mark_reg_death     PARAMS ((rtx));
-static void mark_reg_live_nc   PARAMS ((int, enum machine_mode));
-static void set_preference     PARAMS ((rtx, rtx));
-static void dump_conflicts     PARAMS ((FILE *));
-static void reg_becomes_live   PARAMS ((rtx, rtx, void *));
-static void reg_dies           PARAMS ((int, enum machine_mode,
-                                      struct insn_chain *));
+static int allocno_compare (const void *, const void *);
+static void global_conflicts (void);
+static void mirror_conflicts (void);
+static void expand_preferences (void);
+static void prune_preferences (void);
+static void find_reg (int, HARD_REG_SET, int, int, int);
+static void record_one_conflict (int);
+static void record_conflicts (int *, int);
+static void mark_reg_store (rtx, rtx, void *);
+static void mark_reg_clobber (rtx, rtx, void *);
+static void mark_reg_conflicts (rtx);
+static void mark_reg_death (rtx);
+static void mark_reg_live_nc (int, enum machine_mode);
+static void set_preference (rtx, rtx);
+static void dump_conflicts (FILE *);
+static void reg_becomes_live (rtx, rtx, void *);
+static void reg_dies (int, enum machine_mode, struct insn_chain *);

 \f
 /* Perform allocation of pseudo-registers not allocated by local_alloc.
    FILE is a file to output debugging information on,
 \f
 /* Perform allocation of pseudo-registers not allocated by local_alloc.
    FILE is a file to output debugging information on,


@@ -316,8 +315,7 @@ static void reg_dies                PARAMS ((int, enum machine_mode,
    and we must not do any more for this function.  */
 
 int
    and we must not do any more for this function.  */
 
 int

-global_alloc (file)
-     FILE *file;
+global_alloc (FILE *file)

 {
   int retval;
 #ifdef ELIMINABLE_REGS
 {
   int retval;
 #ifdef ELIMINABLE_REGS


@@ -400,14 +398,14 @@ global_alloc (file)
   /* Establish mappings from register number to allocation number
      and vice versa.  In the process, count the allocnos.  */
 
   /* Establish mappings from register number to allocation number
      and vice versa.  In the process, count the allocnos.  */
 

-  reg_allocno = (int *) xmalloc (max_regno * sizeof (int));
+  reg_allocno = xmalloc (max_regno * sizeof (int));

 
   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
     reg_allocno[i] = -1;
 
   /* Initialize the shared-hard-reg mapping
      from the list of pairs that may share.  */
 
   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
     reg_allocno[i] = -1;
 
   /* Initialize the shared-hard-reg mapping
      from the list of pairs that may share.  */

-  reg_may_share = (int *) xcalloc (max_regno, sizeof (int));
+  reg_may_share = xcalloc (max_regno, sizeof (int));

   for (x = regs_may_share; x; x = XEXP (XEXP (x, 1), 1))
     {
       int r1 = REGNO (XEXP (x, 0));
   for (x = regs_may_share; x; x = XEXP (XEXP (x, 1), 1))
     {
       int r1 = REGNO (XEXP (x, 0));


@@ -438,7 +436,7 @@ global_alloc (file)
     else
       reg_allocno[i] = -1;
 
     else
       reg_allocno[i] = -1;
 

-  allocno = (struct allocno *) xcalloc (max_allocno, sizeof (struct allocno));
+  allocno = xcalloc (max_allocno, sizeof (struct allocno));

 
   for (i = FIRST_PSEUDO_REGISTER; i < (size_t) max_regno; i++)
     if (reg_allocno[i] >= 0)
 
   for (i = FIRST_PSEUDO_REGISTER; i < (size_t) max_regno; i++)
     if (reg_allocno[i] >= 0)


@@ -456,9 +454,9 @@ global_alloc (file)
   /* Calculate amount of usage of each hard reg by pseudos
      allocated by local-alloc.  This is to see if we want to
      override it.  */
   /* Calculate amount of usage of each hard reg by pseudos
      allocated by local-alloc.  This is to see if we want to
      override it.  */

-  memset ((char *) local_reg_live_length, 0, sizeof local_reg_live_length);
-  memset ((char *) local_reg_n_refs, 0, sizeof local_reg_n_refs);
-  memset ((char *) local_reg_freq, 0, sizeof local_reg_freq);
+  memset (local_reg_live_length, 0, sizeof local_reg_live_length);
+  memset (local_reg_n_refs, 0, sizeof local_reg_n_refs);
+  memset (local_reg_freq, 0, sizeof local_reg_freq);

   for (i = FIRST_PSEUDO_REGISTER; i < (size_t) max_regno; i++)
     if (reg_renumber[i] >= 0)
       {
   for (i = FIRST_PSEUDO_REGISTER; i < (size_t) max_regno; i++)
     if (reg_renumber[i] >= 0)
       {


@@ -484,10 +482,9 @@ global_alloc (file)
   /* We used to use alloca here, but the size of what it would try to
      allocate would occasionally cause it to exceed the stack limit and
      cause unpredictable core dumps.  Some examples were > 2Mb in size.  */
   /* We used to use alloca here, but the size of what it would try to
      allocate would occasionally cause it to exceed the stack limit and
      cause unpredictable core dumps.  Some examples were > 2Mb in size.  */

-  conflicts = (INT_TYPE *) xcalloc (max_allocno * allocno_row_words,
-                                   sizeof (INT_TYPE));
+  conflicts = xcalloc (max_allocno * allocno_row_words, sizeof (INT_TYPE));

 
 

-  allocnos_live = (INT_TYPE *) xmalloc (allocno_row_words * sizeof (INT_TYPE));
+  allocnos_live = xmalloc (allocno_row_words * sizeof (INT_TYPE));

 
   /* If there is work to be done (at least one reg to allocate),
      perform global conflict analysis and allocate the regs.  */
 
   /* If there is work to be done (at least one reg to allocate),
      perform global conflict analysis and allocate the regs.  */


@@ -524,7 +521,7 @@ global_alloc (file)
 
       /* Determine the order to allocate the remaining pseudo registers.  */
 
 
       /* Determine the order to allocate the remaining pseudo registers.  */
 

-      allocno_order = (int *) xmalloc (max_allocno * sizeof (int));
+      allocno_order = xmalloc (max_allocno * sizeof (int));

       for (i = 0; i < (size_t) max_allocno; i++)
        allocno_order[i] = i;
 
       for (i = 0; i < (size_t) max_allocno; i++)
        allocno_order[i] = i;
 


@@ -599,9 +596,7 @@ global_alloc (file)
    Returns -1 (1) if *v1 should be allocated before (after) *v2.  */
 
 static int
    Returns -1 (1) if *v1 should be allocated before (after) *v2.  */
 
 static int

-allocno_compare (v1p, v2p)
-     const PTR v1p;
-     const PTR v2p;
+allocno_compare (const void *v1p, const void *v2p)

 {
   int v1 = *(const int *)v1p, v2 = *(const int *)v2p;
   /* Note that the quotient will never be bigger than
 {
   int v1 = *(const int *)v1p, v2 = *(const int *)v2p;
   /* Note that the quotient will never be bigger than


@@ -629,7 +624,7 @@ allocno_compare (v1p, v2p)
    conflict matrices and preference tables.  */
 
 static void
    conflict matrices and preference tables.  */
 
 static void

-global_conflicts ()
+global_conflicts (void)

 {
   int i;
   basic_block b;
 {
   int i;
   basic_block b;


@@ -637,13 +632,13 @@ global_conflicts ()
   int *block_start_allocnos;
 
   /* Make a vector that mark_reg_{store,clobber} will store in.  */
   int *block_start_allocnos;
 
   /* Make a vector that mark_reg_{store,clobber} will store in.  */

-  regs_set = (rtx *) xmalloc (max_parallel * sizeof (rtx) * 2);
+  regs_set = xmalloc (max_parallel * sizeof (rtx) * 2);

 
 

-  block_start_allocnos = (int *) xmalloc (max_allocno * sizeof (int));
+  block_start_allocnos = xmalloc (max_allocno * sizeof (int));

 
   FOR_EACH_BB (b)
     {
 
   FOR_EACH_BB (b)
     {

-      memset ((char *) allocnos_live, 0, allocno_row_words * sizeof (INT_TYPE));
+      memset (allocnos_live, 0, allocno_row_words * sizeof (INT_TYPE));

 
       /* Initialize table of registers currently live
         to the state at the beginning of this basic block.
 
       /* Initialize table of registers currently live
         to the state at the beginning of this basic block.


@@ -703,11 +698,11 @@ global_conflicts ()
            scan the instruction that makes either X or Y become live.  */
        record_conflicts (block_start_allocnos, ax);
 
            scan the instruction that makes either X or Y become live.  */
        record_conflicts (block_start_allocnos, ax);
 

-       /* Pseudos can't go in stack regs at the start of a basic block that
-          is reached by an abnormal edge. Likewise for call clobbered regs,
-          because because caller-save, fixup_abnormal_edges, and possibly
-          the table driven EH machinery are not quite ready to handle such
-          regs live across such edges.  */
+       /* Pseudos can't go in stack regs at the start of a basic block that
+          is reached by an abnormal edge. Likewise for call clobbered regs,
+          because because caller-save, fixup_abnormal_edges, and possibly
+          the table driven EH machinery are not quite ready to handle such
+          regs live across such edges.  */

        {
          edge e;
 
        {
          edge e;
 


@@ -852,7 +847,7 @@ global_conflicts ()
    merge any preferences between those allocnos.  */
 
 static void
    merge any preferences between those allocnos.  */
 
 static void

-expand_preferences ()
+expand_preferences (void)

 {
   rtx insn;
   rtx link;
 {
   rtx insn;
   rtx link;


@@ -903,11 +898,11 @@ expand_preferences ()
    we will avoid using these registers.  */
 
 static void
    we will avoid using these registers.  */
 
 static void

-prune_preferences ()
+prune_preferences (void)

 {
   int i;
   int num;
 {
   int i;
   int num;

-  int *allocno_to_order = (int *) xmalloc (max_allocno * sizeof (int));
+  int *allocno_to_order = xmalloc (max_allocno * sizeof (int));

 
   /* Scan least most important to most important.
      For each allocno, remove from preferences registers that cannot be used,
 
   /* Scan least most important to most important.
      For each allocno, remove from preferences registers that cannot be used,


@@ -991,12 +986,7 @@ prune_preferences ()
    If not, do nothing.  */
 
 static void
    If not, do nothing.  */
 
 static void

-find_reg (num, losers, alt_regs_p, accept_call_clobbered, retrying)
-     int num;
-     HARD_REG_SET losers;
-     int alt_regs_p;
-     int accept_call_clobbered;
-     int retrying;
+find_reg (int num, HARD_REG_SET losers, int alt_regs_p, int accept_call_clobbered, int retrying)

 {
   int i, best_reg, pass;
   HARD_REG_SET used, used1, used2;
 {
   int i, best_reg, pass;
   HARD_REG_SET used, used1, used2;


@@ -1110,7 +1100,7 @@ find_reg (num, losers, alt_regs_p, accept_call_clobbered, retrying)
                   (j < lim
                    && ! TEST_HARD_REG_BIT (used, j)
                    && (REGNO_REG_CLASS (j)
                   (j < lim
                    && ! TEST_HARD_REG_BIT (used, j)
                    && (REGNO_REG_CLASS (j)

-                       == REGNO_REG_CLASS (best_reg + (j - i))
+                       == REGNO_REG_CLASS (best_reg + (j - i))

                        || reg_class_subset_p (REGNO_REG_CLASS (j),
                                               REGNO_REG_CLASS (best_reg + (j - i)))
                        || reg_class_subset_p (REGNO_REG_CLASS (best_reg + (j - i)),
                        || reg_class_subset_p (REGNO_REG_CLASS (j),
                                               REGNO_REG_CLASS (best_reg + (j - i)))
                        || reg_class_subset_p (REGNO_REG_CLASS (best_reg + (j - i)),


@@ -1149,7 +1139,7 @@ find_reg (num, losers, alt_regs_p, accept_call_clobbered, retrying)
                   (j < lim
                    && ! TEST_HARD_REG_BIT (used, j)
                    && (REGNO_REG_CLASS (j)
                   (j < lim
                    && ! TEST_HARD_REG_BIT (used, j)
                    && (REGNO_REG_CLASS (j)

-                       == REGNO_REG_CLASS (best_reg + (j - i))
+                       == REGNO_REG_CLASS (best_reg + (j - i))

                        || reg_class_subset_p (REGNO_REG_CLASS (j),
                                               REGNO_REG_CLASS (best_reg + (j - i)))
                        || reg_class_subset_p (REGNO_REG_CLASS (best_reg + (j - i)),
                        || reg_class_subset_p (REGNO_REG_CLASS (j),
                                               REGNO_REG_CLASS (best_reg + (j - i)))
                        || reg_class_subset_p (REGNO_REG_CLASS (best_reg + (j - i)),


@@ -1311,9 +1301,7 @@ find_reg (num, losers, alt_regs_p, accept_call_clobbered, retrying)
    If FORBIDDEN_REGS is zero, no regs are forbidden.  */
 
 void
    If FORBIDDEN_REGS is zero, no regs are forbidden.  */
 
 void

-retry_global_alloc (regno, forbidden_regs)
-     int regno;
-     HARD_REG_SET forbidden_regs;
+retry_global_alloc (int regno, HARD_REG_SET forbidden_regs)

 {
   int alloc_no = reg_allocno[regno];
   if (alloc_no >= 0)
 {
   int alloc_no = reg_allocno[regno];
   if (alloc_no >= 0)


@@ -1344,8 +1332,7 @@ retry_global_alloc (regno, forbidden_regs)
    reg_renumber before calling here.  */
 
 static void
    reg_renumber before calling here.  */
 
 static void

-record_one_conflict (regno)
-     int regno;
+record_one_conflict (int regno)

 {
   int j;
 
 {
   int j;
 


@@ -1388,9 +1375,7 @@ record_one_conflict (regno)
    are currently live.  Their bits are also flagged in allocnos_live.  */
 
 static void
    are currently live.  Their bits are also flagged in allocnos_live.  */
 
 static void

-record_conflicts (allocno_vec, len)
-     int *allocno_vec;
-     int len;
+record_conflicts (int *allocno_vec, int len)

 {
   while (--len >= 0)
     IOR_HARD_REG_SET (allocno[allocno_vec[len]].hard_reg_conflicts,
 {
   while (--len >= 0)
     IOR_HARD_REG_SET (allocno[allocno_vec[len]].hard_reg_conflicts,


@@ -1399,7 +1384,7 @@ record_conflicts (allocno_vec, len)
 
 /* If CONFLICTP (i, j) is true, make sure CONFLICTP (j, i) is also true.  */
 static void
 
 /* If CONFLICTP (i, j) is true, make sure CONFLICTP (j, i) is also true.  */
 static void

-mirror_conflicts ()
+mirror_conflicts (void)

 {
   int i, j;
   int rw = allocno_row_words;
 {
   int i, j;
   int rw = allocno_row_words;


@@ -1447,9 +1432,7 @@ mirror_conflicts ()
    a REG_INC note was found for it).  */
 
 static void
    a REG_INC note was found for it).  */
 
 static void

-mark_reg_store (reg, setter, data)
-     rtx reg, setter;
-     void *data ATTRIBUTE_UNUSED;
+mark_reg_store (rtx reg, rtx setter, void *data ATTRIBUTE_UNUSED)

 {
   int regno;
 
 {
   int regno;
 


@@ -1496,9 +1479,7 @@ mark_reg_store (reg, setter, data)
 /* Like mark_reg_set except notice just CLOBBERs; ignore SETs.  */
 
 static void
 /* Like mark_reg_set except notice just CLOBBERs; ignore SETs.  */
 
 static void

-mark_reg_clobber (reg, setter, data)
-     rtx reg, setter;
-     void *data ATTRIBUTE_UNUSED;
+mark_reg_clobber (rtx reg, rtx setter, void *data ATTRIBUTE_UNUSED)

 {
   if (GET_CODE (setter) == CLOBBER)
     mark_reg_store (reg, setter, data);
 {
   if (GET_CODE (setter) == CLOBBER)
     mark_reg_store (reg, setter, data);


@@ -1508,8 +1489,7 @@ mark_reg_clobber (reg, setter, data)
    Do not mark REG itself as live.  */
 
 static void
    Do not mark REG itself as live.  */
 
 static void

-mark_reg_conflicts (reg)
-     rtx reg;
+mark_reg_conflicts (rtx reg)

 {
   int regno;
 
 {
   int regno;
 


@@ -1548,8 +1528,7 @@ mark_reg_conflicts (reg)
    Store a 0 in regs_live or allocnos_live for this register.  */
 
 static void
    Store a 0 in regs_live or allocnos_live for this register.  */
 
 static void

-mark_reg_death (reg)
-     rtx reg;
+mark_reg_death (rtx reg)

 {
   int regno = REGNO (reg);
 
 {
   int regno = REGNO (reg);
 


@@ -1585,9 +1564,7 @@ mark_reg_death (reg)
    it is assumed that the caller will do that.  */
 
 static void
    it is assumed that the caller will do that.  */
 
 static void

-mark_reg_live_nc (regno, mode)
-     int regno;
-     enum machine_mode mode;
+mark_reg_live_nc (int regno, enum machine_mode mode)

 {
   int last = regno + HARD_REGNO_NREGS (regno, mode);
   while (regno < last)
 {
   int last = regno + HARD_REGNO_NREGS (regno, mode);
   while (regno < last)


@@ -1607,8 +1584,7 @@ mark_reg_live_nc (regno, mode)
    pseudo-register to a hard register.  */
 
 static void
    pseudo-register to a hard register.  */
 
 static void

-set_preference (dest, src)
-     rtx dest, src;
+set_preference (rtx dest, rtx src)

 {
   unsigned int src_regno, dest_regno;
   /* Amount to add to the hard regno for SRC, or subtract from that for DEST,
 {
   unsigned int src_regno, dest_regno;
   /* Amount to add to the hard regno for SRC, or subtract from that for DEST,


@@ -1715,8 +1691,7 @@ set_preference (dest, src)
    a use of TO.  */
 
 void
    a use of TO.  */
 
 void

-mark_elimination (from, to)
-     int from, to;
+mark_elimination (int from, int to)

 {
   basic_block bb;
 
 {
   basic_block bb;
 


@@ -1738,10 +1713,7 @@ static regset live_relevant_regs;
 /* Record in live_relevant_regs and REGS_SET that register REG became live.
    This is called via note_stores.  */
 static void
 /* Record in live_relevant_regs and REGS_SET that register REG became live.
    This is called via note_stores.  */
 static void

-reg_becomes_live (reg, setter, regs_set)
-     rtx reg;
-     rtx setter ATTRIBUTE_UNUSED;
-     void *regs_set;
+reg_becomes_live (rtx reg, rtx setter ATTRIBUTE_UNUSED, void *regs_set)

 {
   int regno;
 
 {
   int regno;
 


@@ -1772,10 +1744,7 @@ reg_becomes_live (reg, setter, regs_set)
 
 /* Record in live_relevant_regs that register REGNO died.  */
 static void
 
 /* Record in live_relevant_regs that register REGNO died.  */
 static void

-reg_dies (regno, mode, chain)
-     int regno;
-     enum machine_mode mode;
-     struct insn_chain *chain;
+reg_dies (int regno, enum machine_mode mode, struct insn_chain *chain)

 {
   if (regno < FIRST_PSEUDO_REGISTER)
     {
 {
   if (regno < FIRST_PSEUDO_REGISTER)
     {


@@ -1799,8 +1768,7 @@ reg_dies (regno, mode, chain)
 /* Walk the insns of the current function and build reload_insn_chain,
    and record register life information.  */
 void
 /* Walk the insns of the current function and build reload_insn_chain,
    and record register life information.  */
 void

-build_insn_chain (first)
-     rtx first;
+build_insn_chain (rtx first)

 {
   struct insn_chain **p = &reload_insn_chain;
   struct insn_chain *prev = 0;
 {
   struct insn_chain **p = &reload_insn_chain;
   struct insn_chain *prev = 0;


@@ -1905,8 +1873,7 @@ build_insn_chain (first)
    showing the information on which the allocation decisions are based.  */
 
 static void
    showing the information on which the allocation decisions are based.  */
 
 static void

-dump_conflicts (file)
-     FILE *file;
+dump_conflicts (FILE *file)

 {
   int i;
   int has_preferences;
 {
   int i;
   int has_preferences;


@@ -1963,8 +1930,7 @@ dump_conflicts (file)
 }
 
 void
 }
 
 void

-dump_global_regs (file)
-     FILE *file;
+dump_global_regs (FILE *file)

 {
   int i, j;
 
 {
   int i, j;