Mercurial > hg > CbC > CbC_gcc
comparison gcc/lambda-trans.c @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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1 /* Lambda matrix transformations. | |
2 Copyright (C) 2003, 2004, 2007, 2008 Free Software Foundation, Inc. | |
3 Contributed by Daniel Berlin <dberlin@dberlin.org>. | |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify it under | |
8 the terms of the GNU General Public License as published by the Free | |
9 Software Foundation; either version 3, or (at your option) any later | |
10 version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 #include "config.h" | |
22 #include "system.h" | |
23 #include "coretypes.h" | |
24 #include "tm.h" | |
25 #include "ggc.h" | |
26 #include "tree.h" | |
27 #include "target.h" | |
28 #include "tree-flow.h" | |
29 #include "lambda.h" | |
30 | |
31 /* Allocate a new transformation matrix. */ | |
32 | |
33 lambda_trans_matrix | |
34 lambda_trans_matrix_new (int colsize, int rowsize) | |
35 { | |
36 lambda_trans_matrix ret; | |
37 | |
38 ret = GGC_NEW (struct lambda_trans_matrix_s); | |
39 LTM_MATRIX (ret) = lambda_matrix_new (rowsize, colsize); | |
40 LTM_ROWSIZE (ret) = rowsize; | |
41 LTM_COLSIZE (ret) = colsize; | |
42 LTM_DENOMINATOR (ret) = 1; | |
43 return ret; | |
44 } | |
45 | |
46 /* Return true if MAT is an identity matrix. */ | |
47 | |
48 bool | |
49 lambda_trans_matrix_id_p (lambda_trans_matrix mat) | |
50 { | |
51 if (LTM_ROWSIZE (mat) != LTM_COLSIZE (mat)) | |
52 return false; | |
53 return lambda_matrix_id_p (LTM_MATRIX (mat), LTM_ROWSIZE (mat)); | |
54 } | |
55 | |
56 | |
57 /* Compute the inverse of the transformation matrix MAT. */ | |
58 | |
59 lambda_trans_matrix | |
60 lambda_trans_matrix_inverse (lambda_trans_matrix mat) | |
61 { | |
62 lambda_trans_matrix inverse; | |
63 int determinant; | |
64 | |
65 inverse = lambda_trans_matrix_new (LTM_ROWSIZE (mat), LTM_COLSIZE (mat)); | |
66 determinant = lambda_matrix_inverse (LTM_MATRIX (mat), LTM_MATRIX (inverse), | |
67 LTM_ROWSIZE (mat)); | |
68 LTM_DENOMINATOR (inverse) = determinant; | |
69 return inverse; | |
70 } | |
71 | |
72 | |
73 /* Print out a transformation matrix. */ | |
74 | |
75 void | |
76 print_lambda_trans_matrix (FILE *outfile, lambda_trans_matrix mat) | |
77 { | |
78 print_lambda_matrix (outfile, LTM_MATRIX (mat), LTM_ROWSIZE (mat), | |
79 LTM_COLSIZE (mat)); | |
80 } |