| 1 | /***************************************************************************
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| 2 | * blitz/tuning.h Platform-specific code tuning
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| 3 | *
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| 4 | * $Id: tuning.h,v 1.1.1.1 1999-11-26 16:37:05 ansari Exp $
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| 5 | *
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| 6 | * Copyright (C) 1997,1998 Todd Veldhuizen <tveldhui@seurat.uwaterloo.ca>
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| 7 | *
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| 8 | * This program is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU General Public License
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| 10 | * as published by the Free Software Foundation; either version 2
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| 11 | * of the License, or (at your option) any later version.
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| 12 | *
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| 13 | * This program is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | * GNU General Public License for more details.
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| 17 | *
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| 18 | * Suggestions: blitz-suggest@cybervision.com
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| 19 | * Bugs: blitz-bugs@cybervision.com
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| 20 | *
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| 21 | * For more information, please see the Blitz++ Home Page:
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| 22 | * http://seurat.uwaterloo.ca/blitz/
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| 23 | *
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| 24 | ***************************************************************************
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| 25 | * $Log: not supported by cvs2svn $
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| 26 | * Revision 1.1.1.1 1999/04/09 17:58:59 ansari
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| 27 | * Creation module DPC/Blitz (blitz 0.4) Reza 09/04/99
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| 28 | *
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| 29 | * Revision 1.6 1998/03/14 00:04:47 tveldhui
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| 30 | * 0.2-alpha-05
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| 31 | *
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| 32 | * Revision 1.5 1997/07/16 14:51:20 tveldhui
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| 33 | * Update: Alpha release 0.2 (Arrays)
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| 34 | *
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| 35 | * Revision 1.4 1997/01/24 14:42:00 tveldhui
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| 36 | * Periodic RCS update
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| 37 | *
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| 38 | * Revision 1.3 1997/01/23 03:28:28 tveldhui
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| 39 | * Periodic RCS update
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| 40 | *
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| 41 | * Revision 1.2 1997/01/13 22:19:58 tveldhui
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| 42 | * Periodic RCS update
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| 43 | *
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| 44 | * Revision 1.1 1996/11/11 17:29:13 tveldhui
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| 45 | * Initial revision
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| 46 | *
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| 47 | *
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| 48 | */
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| 49 |
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| 50 | #ifndef BZ_TUNING_H
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| 51 | #define BZ_TUNING_H
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| 52 |
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| 53 | // These estimates should be conservative (i.e. underestimate the
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| 54 | // cache sizes).
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| 55 | #define BZ_L1_CACHE_ESTIMATED_SIZE 8192
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| 56 | #define BZ_L2_CACHE_ESTIMATED_SIZE 65536
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| 57 |
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| 58 |
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| 59 | #undef BZ_PARTIAL_LOOP_UNROLL
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| 60 | #define BZ_PASS_EXPR_BY_VALUE
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| 61 | #undef BZ_PTR_INC_FASTER_THAN_INDIRECTION
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| 62 | #define BZ_MANUAL_VECEXPR_COPY_CONSTRUCTOR
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| 63 | #undef BZ_KCC_COPY_PROPAGATION_KLUDGE
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| 64 | #undef BZ_ALTERNATE_FORWARD_BACKWARD_TRAVERSALS
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| 65 | #undef BZ_ARRAY_EXPR_PASS_INDEX_BY_VALUE
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| 66 | #define BZ_INLINE_GROUP1
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| 67 | #define BZ_INLINE_GROUP2
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| 68 | #define BZ_COLLAPSE_LOOPS
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| 69 | #define BZ_USE_FAST_READ_ARRAY_EXPR
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| 70 | #define BZ_ARRAY_EXPR_USE_COMMON_STRIDE
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| 71 | #undef BZ_ARRAY_FAST_TRAVERSAL_UNROLL
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| 72 | #undef BZ_ARRAY_STACK_TRAVERSAL_CSE_AND_ANTIALIAS
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| 73 | #undef BZ_ARRAY_STACK_TRAVERSAL_UNROLL
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| 74 | #define BZ_ARRAY_2D_STENCIL_TILING
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| 75 | #define BZ_ARRAY_2D_STENCIL_TILE_SIZE 128
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| 76 | #undef BZ_INTERLACE_ARRAYS
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| 77 |
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| 78 |
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| 79 | /*
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| 80 | * Platform-specific tuning
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| 81 | */
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| 82 |
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| 83 | #ifdef _CRAYT3E
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| 84 | // The backend compiler on the T3E does a better job of
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| 85 | // loop unrolling.
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| 86 | #undef BZ_PARTIAL_LOOP_UNROLL
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| 87 | #undef BZ_ARRAY_FAST_TRAVERSAL_UNROLL
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| 88 | #undef BZ_ARRAY_STACK_TRAVERSAL_UNROLL
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| 89 | #endif
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| 90 |
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| 91 | #ifdef __GNUC__
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| 92 | // The egcs compiler does a good job of loop unrolling, if
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| 93 | // -funroll-loops is used.
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| 94 | #undef BZ_PARTIAL_LOOP_UNROLL
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| 95 | #undef BZ_ARRAY_FAST_TRAVERSAL_UNROLL
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| 96 | #undef BZ_ARRAY_STACK_TRAVERSAL_UNROLL
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| 97 | #endif
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| 98 |
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| 99 | #ifdef BZ_DISABLE_KCC_COPY_PROPAGATION_KLUDGE
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| 100 | #undef BZ_KCC_COPY_PROPAGATION_KLUDGE
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| 101 | #endif
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| 102 |
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| 103 | #ifdef BZ_INLINE_GROUP1
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| 104 | #define _bz_inline1 inline
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| 105 | #else
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| 106 | #define _bz_inline1
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| 107 | #endif
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| 108 |
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| 109 | #ifdef BZ_INLINE_GROUP2
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| 110 | #define _bz_inline2 inline
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| 111 | #else
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| 112 | #define _bz_inline2
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| 113 | #endif
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| 114 |
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| 115 | #ifdef __DECCXX
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| 116 | // The DEC cxx compiler has problems with loop unrolling
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| 117 | // because of aliasing. Loop unrolling and anti-aliasing
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| 118 | // is done by Blitz++.
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| 119 |
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| 120 | #define BZ_PARTIAL_LOOP_UNROLL
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| 121 | #define BZ_ARRAY_STACK_TRAVERSAL_CSE_AND_ANTIALIAS
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| 122 | #define BZ_ARRAY_STACK_TRAVERSAL_UNROLL
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| 123 | #endif
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| 124 |
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| 125 | /*
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| 126 | * BZ_NO_PROPAGATE(X) prevents the compiler from performing
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| 127 | * copy propagation on a variable. This is used for loop
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| 128 | * unrolling to prevent KAI C++ from rearranging the
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| 129 | * ordering of memory accesses.
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| 130 | */
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| 131 |
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| 132 | #define BZ_NO_PROPAGATE(X) X
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| 133 |
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| 134 | #ifdef __KCC
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| 135 | #ifdef BZ_USE_NO_PROPAGATE
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| 136 | extern "C" int __kai_apply(const char*, ...);
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| 137 |
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| 138 | #undef BZ_NO_PROPAGATE(X)
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| 139 | #define BZ_NO_PROPAGATE(X) __kai_apply("(%a)",&X)
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| 140 | #endif
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| 141 | #endif
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| 142 |
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| 143 | #endif // BZ_TUNING_H
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