* decl.c (finish_method): Give methods once-only linkage.

[pf3gnuchains/gcc-fork.git] / gcc / caller-save.c

diff --git a/gcc/caller-save.c b/gcc/caller-save.c
index aa9b584..26be617 100644 (file)
--- a/gcc/caller-save.c
+++ b/gcc/caller-save.c
@@ -24,9 +24,9 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include "coretypes.h"
 #include "tm.h"
 #include "rtl.h"
+#include "regs.h"
 #include "insn-config.h"
 #include "flags.h"
-#include "regs.h"
 #include "hard-reg-set.h"
 #include "recog.h"
 #include "basic-block.h"
@@ -160,8 +160,7 @@ init_caller_save (void)
         [(int) MODE_BASE_REG_CLASS (regno_save_mode [i][1])], i))
       break;
 
-  if (i == FIRST_PSEUDO_REGISTER)
-    abort ();
+  gcc_assert (i < FIRST_PSEUDO_REGISTER);
 
   addr_reg = gen_rtx_REG (Pmode, i);
 
@@ -381,8 +380,7 @@ save_call_clobbered_regs (void)
 
       next = chain->next;
 
-      if (chain->is_caller_save_insn)
-       abort ();
+      gcc_assert (!chain->is_caller_save_insn);
 
       if (INSN_P (insn))
        {
@@ -410,8 +408,9 @@ save_call_clobbered_regs (void)
 
          if (code == CALL_INSN && ! find_reg_note (insn, REG_NORETURN, NULL))
            {
-             int regno;
+             unsigned regno;
              HARD_REG_SET hard_regs_to_save;
+             reg_set_iterator rsi;
 
              /* Use the register life information in CHAIN to compute which
                 regs are live during the call.  */
@@ -427,27 +426,22 @@ save_call_clobbered_regs (void)
              /* Look through all live pseudos, mark their hard registers
                 and choose proper mode for saving.  */
              EXECUTE_IF_SET_IN_REG_SET
-               (&chain->live_throughout, FIRST_PSEUDO_REGISTER, regno,
-                {
-                  int r = reg_renumber[regno];
-                  int nregs;
-
-                  if (r >= 0)
-                    {
-                      enum machine_mode mode;
-
-                      nregs = hard_regno_nregs[r][PSEUDO_REGNO_MODE (regno)];
-                      mode = HARD_REGNO_CALLER_SAVE_MODE
-                               (r, nregs, PSEUDO_REGNO_MODE (regno));
-                      if (GET_MODE_BITSIZE (mode)
-                          > GET_MODE_BITSIZE (save_mode[r]))
-                        save_mode[r] = mode;
-                      while (nregs-- > 0)
-                        SET_HARD_REG_BIT (hard_regs_to_save, r + nregs);
-                    }
-                  else
-                    abort ();
-                });
+               (&chain->live_throughout, FIRST_PSEUDO_REGISTER, regno, rsi)
+               {
+                 int r = reg_renumber[regno];
+                 int nregs;
+                 enum machine_mode mode;
+
+                 gcc_assert (r >= 0);
+                 nregs = hard_regno_nregs[r][PSEUDO_REGNO_MODE (regno)];
+                 mode = HARD_REGNO_CALLER_SAVE_MODE
+                   (r, nregs, PSEUDO_REGNO_MODE (regno));
+                 if (GET_MODE_BITSIZE (mode)
+                     > GET_MODE_BITSIZE (save_mode[r]))
+                   save_mode[r] = mode;
+                 while (nregs-- > 0)
+                   SET_HARD_REG_BIT (hard_regs_to_save, r + nregs);
+               }
 
              /* Record all registers set in this call insn.  These don't need
                 to be saved.  N.B. the call insn might set a subreg of a
@@ -506,8 +500,7 @@ mark_set_regs (rtx reg, rtx setter ATTRIBUTE_UNUSED,
       rtx inner = SUBREG_REG (reg);
       if (!REG_P (inner) || REGNO (inner) >= FIRST_PSEUDO_REGISTER)
        return;
-
-      regno = subreg_hard_regno (reg, 1);
+      regno = subreg_regno (reg);
     }
   else if (REG_P (reg)
           && REGNO (reg) < FIRST_PSEUDO_REGISTER)
@@ -650,9 +643,7 @@ insert_restore (struct insn_chain *chain, int before_p, int regno,
      or SET_SRC.  Instead of doing so and causing a crash later, check
      for this common case and abort here instead.  This will remove one
      step in debugging such problems.  */
-
-  if (regno_save_mem[regno][1] == 0)
-    abort ();
+  gcc_assert (regno_save_mem[regno][1]);
 
   /* Get the pattern to emit and update our status.
 
@@ -725,9 +716,7 @@ insert_save (struct insn_chain *chain, int before_p, int regno,
      or SET_SRC.  Instead of doing so and causing a crash later, check
      for this common case and abort here instead.  This will remove one
      step in debugging such problems.  */
-
-  if (regno_save_mem[regno][1] == 0)
-    abort ();
+  gcc_assert (regno_save_mem[regno][1]);
 
   /* Get the pattern to emit and update our status.
 
@@ -824,9 +813,7 @@ insert_one_insn (struct insn_chain *chain, int before_p, int code, rtx pat)
              rtx reg = XEXP (link, 0);
              int regno, i;
 
-             if (!REG_P (reg))
-               abort ();
-
+             gcc_assert (REG_P (reg));
              regno = REGNO (reg);
              if (regno >= FIRST_PSEUDO_REGISTER)
                regno = reg_renumber[regno];