emit-rtl.c (init_emit): Add hard registers to regno_reg_rtx.

	* emit-rtl.c (init_emit): Add hard registers to regno_reg_rtx.
	* combine.c (move_deaths): Use regno_reg_rtx for hard regs rather
	than creating a new register.
	(distribute_notes): Likewise.
	* df.c (df_reg_use_gen): Likewise.
	(df_reg_clobber_gen): Likewise.
	(df_ref_record): Likewise.
	* expr.c (use_regs): Likewise.
	* flow.c (propagate_one_insn): Likewise.
	(mark_set_1): Likewise.
	(mark_used_reg): Likewise.
	* reload.c (emit_reload_insns): Likewise.

From-SVN: r54358

6 files changed, 32 insertions, 15 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f07f710..bb8e9df 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,18 @@
+2002-06-07  Jeff Law <law@redhat.com
+
+	* emit-rtl.c (init_emit): Add hard registers to regno_reg_rtx.
+	* combine.c (move_deaths): Use regno_reg_rtx for hard regs rather       
+	than creating a new register.
+	(distribute_notes): Likewise.
+	* df.c (df_reg_use_gen): Likewise.
+	(df_reg_clobber_gen): Likewise.
+	(df_ref_record): Likewise.
+	* expr.c (use_regs): Likewise.
+	* flow.c (propagate_one_insn): Likewise.
+	(mark_set_1): Likewise.
+	(mark_used_reg): Likewise.
+	* reload.c (emit_reload_insns): Likewise.
+
 2002-06-07  Roger Sayle  <roger@eyesopen.com>
 
 	* simplify-rtx.c (simplify_gen_relational): Simplify RTL of the form
diff --git a/gcc/combine.c b/gcc/combine.c
index fe247ea..11de1c7 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -11944,7 +11944,7 @@ move_deaths (x, maybe_kill_insn, from_cuid, to_insn, pnotes)
 		if (i < regno || i >= ourend)
 		  REG_NOTES (where_dead)
 		    = gen_rtx_EXPR_LIST (REG_DEAD,
-					 gen_rtx_REG (reg_raw_mode[i], i),
+					 regno_reg_rtx[i],
 					 REG_NOTES (where_dead));
 	    }
 
@@ -11971,7 +11971,7 @@ move_deaths (x, maybe_kill_insn, from_cuid, to_insn, pnotes)
 		offset = 1;
 
 	      for (i = regno + offset; i < ourend; i++)
-		move_deaths (gen_rtx_REG (reg_raw_mode[i], i),
+		move_deaths (regno_reg_rtx[i],
 			     maybe_kill_insn, from_cuid, to_insn, &oldnotes);
 	    }
 
@@ -12593,7 +12593,7 @@ distribute_notes (notes, from_insn, i3, i2, elim_i2, elim_i1)
 		      for (i = regno; i < endregno;
 			   i += HARD_REGNO_NREGS (i, reg_raw_mode[i]))
 			{
-			  rtx piece = gen_rtx_REG (reg_raw_mode[i], i);
+			  rtx piece = regno_reg_rtx[i];
 			  basic_block bb = this_basic_block;
 
 			  if (! dead_or_set_p (place, piece)
diff --git a/gcc/df.c b/gcc/df.c
index a35978e..d713168 100644
--- a/gcc/df.c
+++ b/gcc/df.c
@@ -625,8 +625,7 @@ static rtx df_reg_use_gen (regno)
   rtx reg;
   rtx use;
 
-  reg = regno >= FIRST_PSEUDO_REGISTER
-    ? regno_reg_rtx[regno] : gen_rtx_REG (reg_raw_mode[regno], regno);
+  reg = regno_reg_rtx[regno];
 
   use = gen_rtx_USE (GET_MODE (reg), reg);
   return use;
@@ -640,8 +639,7 @@ static rtx df_reg_clobber_gen (regno)
   rtx reg;
   rtx use;
 
-  reg = regno >= FIRST_PSEUDO_REGISTER
-    ? regno_reg_rtx[regno] : gen_rtx_REG (reg_raw_mode[regno], regno);
+  reg = regno_reg_rtx[regno];
 
   use = gen_rtx_CLOBBER (GET_MODE (reg), reg);
   return use;
@@ -897,7 +895,7 @@ df_ref_record (df, reg, loc, insn, ref_type, ref_flags)
       endregno = regno + HARD_REGNO_NREGS (regno, GET_MODE (reg));
 
       for (i = regno; i < endregno; i++)
-	df_ref_record_1 (df, gen_rtx_REG (reg_raw_mode[i], i),
+	df_ref_record_1 (df, regno_reg_rtx[i],
 			 loc, insn, ref_type, ref_flags);
     }
   else
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index 724244b..7df9f23 100644
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -4913,6 +4913,7 @@ void
 init_emit ()
 {
   struct function *f = cfun;
+  int i;
 
   f->emit = (struct emit_status *) ggc_alloc (sizeof (struct emit_status));
   first_insn = NULL;
@@ -4942,9 +4943,14 @@ init_emit ()
     = (tree *) ggc_alloc_cleared (f->emit->regno_pointer_align_length
 				  * sizeof (tree));
 
+  /* Put copies of all the hard registers into regno_reg_rtx.  */
+  for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
+    regno_reg_rtx[i] = gen_raw_REG (reg_raw_mode[i], i);
+
   /* Put copies of all the virtual register rtx into regno_reg_rtx.  */
   init_virtual_regs (f->emit);
 
+
   /* Indicate that the virtual registers and stack locations are
      all pointers.  */
   REG_POINTER (stack_pointer_rtx) = 1;
diff --git a/gcc/expr.c b/gcc/expr.c
index e9cb241..b719956 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -2293,7 +2293,7 @@ use_regs (call_fusage, regno, nregs)
     abort ();
 
   for (i = 0; i < nregs; i++)
-    use_reg (call_fusage, gen_rtx_REG (reg_raw_mode[regno + i], regno + i));
+    use_reg (call_fusage, regno_reg_rtx[regno + i]);
 }
 
 /* Add USE expressions to *CALL_FUSAGE for each REG contained in the
diff --git a/gcc/flow.c b/gcc/flow.c
index 6c81d48..60170b1 100644
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -1767,8 +1767,7 @@ propagate_one_insn (pbi, insn)
 	    if (TEST_HARD_REG_BIT (regs_invalidated_by_call, i))
 	      {
 		/* We do not want REG_UNUSED notes for these registers.  */
-		mark_set_1 (pbi, CLOBBER, gen_rtx_REG (reg_raw_mode[i], i),
-			    cond, insn,
+		mark_set_1 (pbi, CLOBBER, regno_reg_rtx[i], cond, insn,
 			    pbi->flags & ~(PROP_DEATH_NOTES | PROP_REG_INFO));
 	      }
 	}
@@ -1816,8 +1815,7 @@ propagate_one_insn (pbi, insn)
 	     so they are made live.  */
 	  for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
 	    if (global_regs[i])
-	      mark_used_reg (pbi, gen_rtx_REG (reg_raw_mode[i], i),
-			     cond, insn);
+	      mark_used_reg (pbi, regno_reg_rtx[i], cond, insn);
 	}
     }
 
@@ -2817,7 +2815,7 @@ mark_set_1 (pbi, code, reg, cond, insn, flags)
 		    if (! REGNO_REG_SET_P (pbi->reg_live, i))
 		      REG_NOTES (insn)
 			= alloc_EXPR_LIST (REG_UNUSED,
-					   gen_rtx_REG (reg_raw_mode[i], i),
+					   regno_reg_rtx[i],
 					   REG_NOTES (insn));
 		}
 	    }
@@ -3625,7 +3623,7 @@ mark_used_reg (pbi, reg, cond, insn)
 		&& ! dead_or_set_regno_p (insn, i))
 	      REG_NOTES (insn)
 		= alloc_EXPR_LIST (REG_DEAD,
-				   gen_rtx_REG (reg_raw_mode[i], i),
+				   regno_reg_rtx[i],
 				   REG_NOTES (insn));
 	}
     }