| /* Lambda matrix transformations. |
| Copyright (C) 2003, 2004, 2007, 2008 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 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 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 COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "ggc.h" |
| #include "tree.h" |
| #include "target.h" |
| #include "tree-flow.h" |
| #include "lambda.h" |
| |
| /* Allocate a new transformation matrix. */ |
| |
| lambda_trans_matrix |
| lambda_trans_matrix_new (int colsize, int rowsize) |
| { |
| lambda_trans_matrix 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; |
| LTM_DENOMINATOR (ret) = 1; |
| return ret; |
| } |
| |
| /* 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) |
| { |
| lambda_trans_matrix inverse; |
| int determinant; |
| |
| inverse = lambda_trans_matrix_new (LTM_ROWSIZE (mat), LTM_COLSIZE (mat)); |
| determinant = lambda_matrix_inverse (LTM_MATRIX (mat), LTM_MATRIX (inverse), |
| LTM_ROWSIZE (mat)); |
| LTM_DENOMINATOR (inverse) = determinant; |
| return inverse; |
| } |
| |
| |
| /* Print out a transformation matrix. */ |
| |
| void |
| print_lambda_trans_matrix (FILE *outfile, lambda_trans_matrix mat) |
| { |
| print_lambda_matrix (outfile, LTM_MATRIX (mat), LTM_ROWSIZE (mat), |
| LTM_COLSIZE (mat)); |
| } |