Mercurial > hg > CbC > CbC_gcc

diff gcc/regmove.c @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents b7f97abdc517
children
line wrap: on
line diff
--- a/gcc/regmove.c	Tue May 25 18:58:51 2010 +0900
+++ b/gcc/regmove.c	Tue Mar 22 17:18:12 2011 +0900
@@ -1,6 +1,6 @@
 /* Move registers around to reduce number of move instructions needed.
-   Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
-   1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -40,7 +40,7 @@
 #include "expr.h"
 #include "basic-block.h"
 #include "except.h"
-#include "toplev.h"
+#include "diagnostic-core.h"
 #include "reload.h"
 #include "timevar.h"
 #include "tree-pass.h"
@@ -72,13 +72,13 @@
 /* Return nonzero if registers with CLASS1 and CLASS2 can be merged without
    causing too much register allocation problems.  */
 static int
-regclass_compatible_p (enum reg_class class0, enum reg_class class1)
+regclass_compatible_p (reg_class_t class0, reg_class_t class1)
 {
   return (class0 == class1
 	  || (reg_class_subset_p (class0, class1)
-	      && ! CLASS_LIKELY_SPILLED_P (class0))
+	      && ! targetm.class_likely_spilled_p (class0))
 	  || (reg_class_subset_p (class1, class0)
-	      && ! CLASS_LIKELY_SPILLED_P (class1)));
+	      && ! targetm.class_likely_spilled_p (class1)));
 }
 
 
@@ -514,7 +514,7 @@
   rtx src_reg = XEXP (src, 0);
   int src_no = REGNO (src_reg);
   int dst_no = REGNO (dest);
-  rtx p, set;
+  rtx p, set, set_insn;
   enum machine_mode old_mode;
   basic_block bb = BLOCK_FOR_INSN (insn);
 
@@ -552,6 +552,7 @@
 				 GET_MODE_BITSIZE (GET_MODE (src_reg))))
     return;
 
+  set_insn = p;
   old_mode = GET_MODE (src_reg);
   PUT_MODE (src_reg, GET_MODE (src));
   XEXP (src, 0) = SET_SRC (set);
@@ -584,9 +585,19 @@
     }
   else
     {
-      rtx note = find_reg_note (p, REG_EQUAL, NULL_RTX);
+      rtx note = find_reg_note (set_insn, REG_EQUAL, NULL_RTX);
       if (note)
-	remove_note (p, note);
+	{
+	  if (rtx_equal_p (XEXP (note, 0), XEXP (src, 0)))
+	    {
+	      XEXP (note, 0)
+		= gen_rtx_fmt_e (GET_CODE (src), GET_MODE (src),
+				 XEXP (note, 0));
+	      df_notes_rescan (set_insn);
+	    }
+	  else
+	    remove_note (set_insn, note);
+	}
     }
 }
 
@@ -1336,7 +1347,7 @@
 	  case 'j': case 'k': case 'l': case 'p': case 'q': case 't': case 'u':
 	  case 'v': case 'w': case 'x': case 'y': case 'z': case 'A': case 'B':
 	  case 'C': case 'D': case 'W': case 'Y': case 'Z':
-	    if (CLASS_LIKELY_SPILLED_P (REG_CLASS_FROM_CONSTRAINT ((unsigned char) c, p) ))
+	    if (targetm.class_likely_spilled_p (REG_CLASS_FROM_CONSTRAINT ((unsigned char) c, p)))
 	      likely_spilled[op_no] = 1;
 	    break;
 	  }