PR middle-end/PR28690

PR middle-end/PR28690
	* rtlanal.c: Update copyright years.
	(commutative_operand_precedence): Give SYMBOL_REF's the same precedence
	as REG_POINTER and MEM_POINTER operands.
	* emit-rtl.c (gen_reg_rtx_and_attrs): New function.
	(set_reg_attrs_from_value): Call mark_reg_pointer as appropriate.
	* rtl.h (gen_reg_rtx_and_attrs): Add prototype for new function.
	* gcse.c: Update copyright years.
	(pre_delete): Call gen_reg_rtx_and_attrs.
	(hoist_code): Likewise.
	(build_store_vectors): Likewise.
	(delete_store): Likewise.
	* loop-invariant.c (move_invariant_reg): Likewise.
	Update copyright years.

From-SVN: r133985

gcc/ChangeLog

@@ -1,3 +1,20 @@
+2008-04-07  Peter Bergner  <bergner@vnet.ibm.com>
+
+	PR middle-end/PR28690
+	* rtlanal.c: Update copyright years.
+	(commutative_operand_precedence): Give SYMBOL_REF's the same precedence
+	as REG_POINTER and MEM_POINTER operands.
+	* emit-rtl.c (gen_reg_rtx_and_attrs): New function.
+	(set_reg_attrs_from_value): Call mark_reg_pointer as appropriate.
+	* rtl.h (gen_reg_rtx_and_attrs): Add prototype for new function.
+	* gcse.c: Update copyright years.
+	(pre_delete): Call gen_reg_rtx_and_attrs.
+	(hoist_code): Likewise.
+	(build_store_vectors): Likewise.
+	(delete_store): Likewise.
+	* loop-invariant.c (move_invariant_reg): Likewise.
+	Update copyright years.
+
 2008-04-07  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md ("*sse_prologue_save_insn"): Use braced output

gcc/emit-rtl.c

@@ -964,11 +964,32 @@ set_reg_attrs_from_value (rtx reg, rtx x)
   int offset;
 
   offset = byte_lowpart_offset (GET_MODE (reg), GET_MODE (x));
-  if (MEM_P (x) && MEM_OFFSET (x) && GET_CODE (MEM_OFFSET (x)) == CONST_INT)
+  if (MEM_P (x))
-    REG_ATTRS (reg)
+    {
-      = get_reg_attrs (MEM_EXPR (x), INTVAL (MEM_OFFSET (x)) + offset);
+      if (MEM_OFFSET (x) && GET_CODE (MEM_OFFSET (x)) == CONST_INT)
-  if (REG_P (x) && REG_ATTRS (x))
+	REG_ATTRS (reg)
-    update_reg_offset (reg, x, offset);
+	  = get_reg_attrs (MEM_EXPR (x), INTVAL (MEM_OFFSET (x)) + offset);
+      if (MEM_POINTER (x))
+	mark_reg_pointer (reg, MEM_ALIGN (x));
+    }
+  else if (REG_P (x))
+    {
+      if (REG_ATTRS (x))
+	update_reg_offset (reg, x, offset);
+      if (REG_POINTER (x))
+	mark_reg_pointer (reg, REGNO_POINTER_ALIGN (REGNO (x)));
+    }
+}
+
+/* Generate a REG rtx for a new pseudo register, copying the mode
+   and attributes from X.  */
+
+rtx
+gen_reg_rtx_and_attrs (rtx x)
+{
+  rtx reg = gen_reg_rtx (GET_MODE (x));
+  set_reg_attrs_from_value (reg, x);
+  return reg;
 }
 
 /* Set the register attributes for registers contained in PARM_RTX.

gcc/gcse.c

@@ -1,7 +1,7 @@
 /* Global common subexpression elimination/Partial redundancy elimination
    and global constant/copy propagation for GNU compiler.
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-   2006, 2007 Free Software Foundation, Inc.
+   2006, 2007, 2008 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -4463,8 +4463,7 @@ pre_delete (void)
 		   expressions into.  Get the mode for the new pseudo from
 		   the mode of the original destination pseudo.  */
 		if (expr->reaching_reg == NULL)
-		  expr->reaching_reg
+		  expr->reaching_reg = gen_reg_rtx_and_attrs (SET_DEST (set));
-		    = gen_reg_rtx (GET_MODE (SET_DEST (set)));
 
 		gcse_emit_move_after (expr->reaching_reg, SET_DEST (set), insn);
 		delete_insn (insn);
@@ -4988,7 +4987,7 @@ hoist_code (void)
 			 from the mode of the original destination pseudo.  */
 		      if (expr->reaching_reg == NULL)
 			expr->reaching_reg
-			  = gen_reg_rtx (GET_MODE (SET_DEST (set)));
+			  = gen_reg_rtx_and_attrs (SET_DEST (set));
 
 		      gcse_emit_move_after (expr->reaching_reg, SET_DEST (set), insn);
 		      delete_insn (insn);
@@ -6121,7 +6120,7 @@ build_store_vectors (void)
 	     are any side effects.  */
 	  if (TEST_BIT (ae_gen[bb->index], ptr->index))
 	    {
-	      rtx r = gen_reg_rtx (GET_MODE (ptr->pattern));
+	      rtx r = gen_reg_rtx_and_attrs (ptr->pattern);
 	      if (dump_file)
 		fprintf (dump_file, "Removing redundant store:\n");
 	      replace_store_insn (r, XEXP (st, 0), bb, ptr);
@@ -6444,7 +6443,7 @@ delete_store (struct ls_expr * expr, basic_block bb)
   rtx reg, i, del;
 
   if (expr->reaching_reg == NULL_RTX)
-    expr->reaching_reg = gen_reg_rtx (GET_MODE (expr->pattern));
+    expr->reaching_reg = gen_reg_rtx_and_attrs (expr->pattern);
 
   reg = expr->reaching_reg;
 

gcc/loop-invariant.c

@@ -1,5 +1,5 @@
 /* RTL-level loop invariant motion.
-   Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -1193,7 +1193,7 @@ move_invariant_reg (struct loop *loop, unsigned invno)
 	 need to create a temporary register.  */
       set = single_set (inv->insn);
       dest = SET_DEST (set);
-      reg = gen_reg_rtx (GET_MODE (dest));
+      reg = gen_reg_rtx_and_attrs (dest);
 
       /* Try replacing the destination by a new pseudoregister.  */
       if (!validate_change (inv->insn, &SET_DEST (set), reg, false))

gcc/rtl.h

@@ -1502,6 +1502,7 @@ extern rtvec gen_rtvec_v (int, rtx *);
 extern rtx gen_reg_rtx (enum machine_mode);
 extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int);
 extern rtx gen_reg_rtx_offset (rtx, enum machine_mode, int);
+extern rtx gen_reg_rtx_and_attrs (rtx);
 extern rtx gen_label_rtx (void);
 extern rtx gen_lowpart_common (enum machine_mode, rtx);
 

gcc/rtlanal.c

@@ -1,6 +1,6 @@
 /* Analyze RTL for GNU compiler.
    Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
    Foundation, Inc.
 
 This file is part of GCC.
@@ -2898,6 +2898,8 @@ commutative_operand_precedence (rtx op)
   switch (GET_RTX_CLASS (code))
     {
     case RTX_CONST_OBJ:
+      if (code == SYMBOL_REF)
+	return -1;
       if (code == CONST_INT)
         return -6;
       if (code == CONST_DOUBLE)