* config/sh/sh.c (calc_live_regs): Use

[pf3gnuchains/gcc-fork.git] / gcc / lambda-trans.c

diff --git a/gcc/lambda-trans.c b/gcc/lambda-trans.c
index 5195bb6..c5872d5 100644 (file)
--- a/gcc/lambda-trans.c
+++ b/gcc/lambda-trans.c
@@ -1,12 +1,12 @@
 /* Lambda matrix transformations.
-   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
    Contributed by Daniel Berlin <dberlin@dberlin.org>.
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
@@ -15,19 +15,16 @@ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
 #include "tm.h"
-#include "errors.h"
 #include "ggc.h"
 #include "tree.h"
 #include "target.h"
-#include "varray.h"
 #include "lambda.h"
 
 /* Allocate a new transformation matrix.  */
@@ -37,7 +34,7 @@ lambda_trans_matrix_new (int colsize, int rowsize)
 {
   lambda_trans_matrix ret;
   
-  ret = ggc_alloc (sizeof (*ret));
+  ret = GGC_NEW (struct lambda_trans_matrix_s);
   LTM_MATRIX (ret) = lambda_matrix_new (rowsize, colsize);
   LTM_ROWSIZE (ret) = rowsize;
   LTM_COLSIZE (ret) = colsize;
@@ -45,7 +42,18 @@ lambda_trans_matrix_new (int colsize, int rowsize)
   return ret;
 }
 
-/* Compute the inverse of the transformation.  */
+/* Return true if MAT is an identity matrix.  */
+
+bool
+lambda_trans_matrix_id_p (lambda_trans_matrix mat)
+{
+  if (LTM_ROWSIZE (mat) != LTM_COLSIZE (mat))
+    return false;
+  return lambda_matrix_id_p (LTM_MATRIX (mat), LTM_ROWSIZE (mat));
+}
+
+
+/* Compute the inverse of the transformation matrix MAT.  */
 
 lambda_trans_matrix 
 lambda_trans_matrix_inverse (lambda_trans_matrix mat)