1226645Sattilio/* Lambda matrix transformations. 2246726Sattilio Copyright (C) 2003, 2004 Free Software Foundation, Inc. 3226930Sjeff Contributed by Daniel Berlin <dberlin@dberlin.org>. 4226645Sattilio 5226645SattilioThis file is part of GCC. 6226645Sattilio 7226645SattilioGCC is free software; you can redistribute it and/or modify it under 8226645Sattiliothe terms of the GNU General Public License as published by the Free 9226645SattilioSoftware Foundation; either version 2, or (at your option) any later 10226645Sattilioversion. 11226645Sattilio 12226645SattilioGCC is distributed in the hope that it will be useful, but WITHOUT ANY 13226645SattilioWARRANTY; without even the implied warranty of MERCHANTABILITY or 14226645SattilioFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15226645Sattiliofor more details. 16226645Sattilio 17226645SattilioYou should have received a copy of the GNU General Public License 18226645Sattilioalong with GCC; see the file COPYING. If not, write to the Free 19226645SattilioSoftware Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 20226645Sattilio02110-1301, USA. */ 21226645Sattilio 22226645Sattilio#include "config.h" 23226645Sattilio#include "system.h" 24226645Sattilio#include "coretypes.h" 25226645Sattilio#include "tm.h" 26226645Sattilio#include "ggc.h" 27226645Sattilio#include "tree.h" 28226645Sattilio#include "target.h" 29226645Sattilio#include "lambda.h" 30226645Sattilio 31246726Sattilio/* Allocate a new transformation matrix. */ 32246726Sattilio 33246726Sattiliolambda_trans_matrix 34246726Sattiliolambda_trans_matrix_new (int colsize, int rowsize) 35246726Sattilio{ 36246726Sattilio lambda_trans_matrix ret; 37246726Sattilio 38248424Sattilio ret = ggc_alloc (sizeof (*ret)); 39248424Sattilio LTM_MATRIX (ret) = lambda_matrix_new (rowsize, colsize); 40248424Sattilio LTM_ROWSIZE (ret) = rowsize; 41248424Sattilio LTM_COLSIZE (ret) = colsize; 42248424Sattilio LTM_DENOMINATOR (ret) = 1; 43248424Sattilio return ret; 44248424Sattilio} 45248424Sattilio 46248424Sattilio/* Return true if MAT is an identity matrix. */ 47248424Sattilio 48248424Sattiliobool 49226645Sattiliolambda_trans_matrix_id_p (lambda_trans_matrix mat) 50226645Sattilio{ 51226645Sattilio if (LTM_ROWSIZE (mat) != LTM_COLSIZE (mat)) 52248448Sattilio return false; 53226645Sattilio return lambda_matrix_id_p (LTM_MATRIX (mat), LTM_ROWSIZE (mat)); 54246726Sattilio} 55246726Sattilio 56226645Sattilio 57226645Sattilio/* Compute the inverse of the transformation matrix MAT. */ 58226645Sattilio 59246840Sattiliolambda_trans_matrix 60246726Sattiliolambda_trans_matrix_inverse (lambda_trans_matrix mat) 61226873Sattilio{ 62226645Sattilio lambda_trans_matrix inverse; 63226876Sjeff int determinant; 64226873Sattilio 65226645Sattilio inverse = lambda_trans_matrix_new (LTM_ROWSIZE (mat), LTM_COLSIZE (mat)); 66226645Sattilio determinant = lambda_matrix_inverse (LTM_MATRIX (mat), LTM_MATRIX (inverse), 67246726Sattilio LTM_ROWSIZE (mat)); 68246726Sattilio LTM_DENOMINATOR (inverse) = determinant; 69246726Sattilio return inverse; 70226645Sattilio} 71233034Sattilio 72247771Salc 73247771Salc/* Print out a transformation matrix. */ 74247771Salc 75233034Sattiliovoid 76246726Sattilioprint_lambda_trans_matrix (FILE *outfile, lambda_trans_matrix mat) 77246726Sattilio{ 78233034Sattilio print_lambda_matrix (outfile, LTM_MATRIX (mat), LTM_ROWSIZE (mat), 79246726Sattilio LTM_COLSIZE (mat)); 80233034Sattilio} 81233034Sattilio