global.c (build_insn_chain): Formatting fixes.

2007-10-12  Kenneth Zadeck <zadeck@naturalbridge.com>

	* global.c (build_insn_chain): Formatting fixes.

From-SVN: r129262

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9e7a02b30cc5700b254dd829c622f609c0832b16..7bafdaa2650beece3827c280bc00b048e10c9562 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2007-10-12  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+       * global.c (build_insn_chain): Formatting fixes.
+
 2007-10-12  Richard Guenther <rguenther@suse.de>
 
        * tree-ssa-forwprop.c (forward_propagate_into_cond): For

diff --git a/gcc/global.c b/gcc/global.c
index 69257bc3c415e0a08397b6cb5fe61ba06751adb8..90f6da877f20264a25dc63346468d00d95edc80b 100644 (file)
--- a/gcc/global.c
+++ b/gcc/global.c
@@ -1358,6 +1358,8 @@ mark_elimination (int from, int to)
     }
 }
 \f
+/* Print chain C to FILE.  */
+
 static void
 print_insn_chain (FILE *file, struct insn_chain *c)
 {
@@ -1366,6 +1368,9 @@ print_insn_chain (FILE *file, struct insn_chain *c)
   bitmap_print (file, &c->dead_or_set, "dead_or_set: ", "\n");
 }
 
+
+/* Print all reload_insn_chains to FILE.  */
+
 static void
 print_insn_chains (FILE *file)
 {
@@ -1373,8 +1378,11 @@ print_insn_chains (FILE *file)
   for (c = reload_insn_chain; c ; c = c->next)
     print_insn_chain (file, c);
 }
+
+
 /* Walk the insns of the current function and build reload_insn_chain,
    and record register life information.  */
+
 static void
 build_insn_chain (void)
 {
@@ -1450,7 +1458,7 @@ build_insn_chain (void)
                      {
                        if (regno < FIRST_PSEUDO_REGISTER)
                          {
-                           if (! fixed_regs[regno])
+                           if (!fixed_regs[regno])
                              bitmap_set_bit (&c->dead_or_set, regno);
                          }
                        else if (reg_renumber[regno] >= 0)
@@ -1461,16 +1469,20 @@ build_insn_chain (void)
                        && (!DF_REF_FLAGS_IS_SET (def, DF_REF_CONDITIONAL)))
                      {
                        rtx reg = DF_REF_REG (def);
+
                        /* We can model subregs, but not if they are
                           wrapped in ZERO_EXTRACTS.  */
                        if (GET_CODE (reg) == SUBREG
                            && !DF_REF_FLAGS_IS_SET (def, DF_REF_EXTRACT))
                          {
                            unsigned int start = SUBREG_BYTE (reg);
-                           unsigned int last = start + GET_MODE_SIZE (GET_MODE (reg));
+                           unsigned int last = start 
+                             + GET_MODE_SIZE (GET_MODE (reg));
 
-                           ra_init_live_subregs (bitmap_bit_p (live_relevant_regs, regno), 
-                                                 live_subregs, live_subregs_used,
+                           ra_init_live_subregs (bitmap_bit_p (live_relevant_regs, 
+                                                               regno), 
+                                                 live_subregs, 
+                                                 live_subregs_used,
                                                  regno, reg);
                            /* Ignore the paradoxical bits.  */
                            if ((int)last > live_subregs_used[regno])
@@ -1535,7 +1547,7 @@ build_insn_chain (void)
                      {
                        if (regno < FIRST_PSEUDO_REGISTER)
                          {
-                           if (! fixed_regs[regno])
+                           if (!fixed_regs[regno])
                              bitmap_set_bit (&c->dead_or_set, regno);
                          }
                        else if (reg_renumber[regno] >= 0)
@@ -1548,10 +1560,13 @@ build_insn_chain (void)
                            && !DF_REF_FLAGS_IS_SET (use, DF_REF_EXTRACT)) 
                          {
                            unsigned int start = SUBREG_BYTE (reg);
-                           unsigned int last = start + GET_MODE_SIZE (GET_MODE (reg));
+                           unsigned int last = start 
+                             + GET_MODE_SIZE (GET_MODE (reg));
                            
-                           ra_init_live_subregs (bitmap_bit_p (live_relevant_regs, regno), 
-                                                 live_subregs, live_subregs_used,
+                           ra_init_live_subregs (bitmap_bit_p (live_relevant_regs, 
+                                                               regno), 
+                                                 live_subregs, 
+                                                 live_subregs_used,
                                                  regno, reg);
                            
                            /* Ignore the paradoxical bits.  */
@@ -1579,13 +1594,13 @@ build_insn_chain (void)
       /* FIXME!! The following code is a disaster.  Reload needs to see the
         labels and jump tables that are just hanging out in between
         the basic blocks.  See pr33676.  */
-
       insn = BB_HEAD (bb);
-
+      
       /* Skip over the barriers and cruft.  */
-      while (insn && (BARRIER_P (insn) || NOTE_P (insn) || BLOCK_FOR_INSN (insn) == bb))
+      while (insn && (BARRIER_P (insn) || NOTE_P (insn) 
+                     || BLOCK_FOR_INSN (insn) == bb))
        insn = PREV_INSN (insn);
-       
+      
       /* While we add anything except barriers and notes, the focus is
         to get the labels and jump tables into the
         reload_insn_chain.  */
@@ -1595,24 +1610,24 @@ build_insn_chain (void)
            {
              if (BLOCK_FOR_INSN (insn))
                break;
-
+             
              c = new_insn_chain ();
              c->next = next;
              next = c;
              *p = c;
              p = &c->prev;
              
-             c->insn = insn;
              /* The block makes no sense here, but it is what the old
                 code did.  */
              c->block = bb->index;
+             c->insn = insn;
              bitmap_copy (&c->live_throughout, live_relevant_regs);
            }     
          insn = PREV_INSN (insn);
        }
     }
 
-  for (i = 0; i < (unsigned int)max_regno; i++)
+  for (i = 0; i < (unsigned int) max_regno; i++)
     if (live_subregs[i])
       free (live_subregs[i]);