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/***************************************************************************
* blitz/tuning.h Platform-specific code tuning
*
* $Id: tuning.h 1414 2005-11-01 22:04:59Z cookedm $
*
* Copyright (C) 1997-2001 Todd Veldhuizen <tveldhui@oonumerics.org>
*
* This code was relicensed under the modified BSD license for use in SciPy
* by Todd Veldhuizen (see LICENSE.txt in the weave directory).
*
*
* Suggestions: blitz-dev@oonumerics.org
* Bugs: blitz-bugs@oonumerics.org
*
* For more information, please see the Blitz++ Home Page:
* http://oonumerics.org/blitz/
*
***************************************************************************/
#ifndef BZ_TUNING_H
#define BZ_TUNING_H
// These estimates should be conservative (i.e. underestimate the
// cache sizes).
#define BZ_L1_CACHE_ESTIMATED_SIZE 8192
#define BZ_L2_CACHE_ESTIMATED_SIZE 65536
#undef BZ_PARTIAL_LOOP_UNROLL
#define BZ_PASS_EXPR_BY_VALUE
#undef BZ_PTR_INC_FASTER_THAN_INDIRECTION
#define BZ_MANUAL_VECEXPR_COPY_CONSTRUCTOR
#undef BZ_KCC_COPY_PROPAGATION_KLUDGE
#undef BZ_ALTERNATE_FORWARD_BACKWARD_TRAVERSALS
#undef BZ_ARRAY_EXPR_PASS_INDEX_BY_VALUE
#define BZ_INLINE_GROUP1
#define BZ_INLINE_GROUP2
#define BZ_COLLAPSE_LOOPS
#define BZ_USE_FAST_READ_ARRAY_EXPR
#define BZ_ARRAY_EXPR_USE_COMMON_STRIDE
#undef BZ_ARRAY_SPACE_FILLING_TRAVERSAL
#undef BZ_ARRAY_FAST_TRAVERSAL_UNROLL
#undef BZ_ARRAY_STACK_TRAVERSAL_CSE_AND_ANTIALIAS
#undef BZ_ARRAY_STACK_TRAVERSAL_UNROLL
#define BZ_ARRAY_2D_STENCIL_TILING
#define BZ_ARRAY_2D_STENCIL_TILE_SIZE 128
#undef BZ_INTERLACE_ARRAYS
#undef BZ_ALIGN_BLOCKS_ON_CACHELINE_BOUNDARY
#define BZ_FAST_COMPILE
#ifndef BZ_DISABLE_NEW_ET
#define BZ_NEW_EXPRESSION_TEMPLATES
#endif
#ifdef BZ_FAST_COMPILE
#define BZ_ETPARMS_CONSTREF
#define BZ_NO_INLINE_ET
#endif
/*
* Platform-specific tuning
*/
#ifdef _CRAYT3E
// The backend compiler on the T3E does a better job of
// loop unrolling.
#undef BZ_PARTIAL_LOOP_UNROLL
#undef BZ_ARRAY_FAST_TRAVERSAL_UNROLL
#undef BZ_ARRAY_STACK_TRAVERSAL_UNROLL
#endif
#ifdef __GNUC__
// The egcs compiler does a good job of loop unrolling, if
// -funroll-loops is used.
#undef BZ_PARTIAL_LOOP_UNROLL
#undef BZ_ARRAY_FAST_TRAVERSAL_UNROLL
#undef BZ_ARRAY_STACK_TRAVERSAL_UNROLL
#endif
#ifdef BZ_DISABLE_KCC_COPY_PROPAGATION_KLUDGE
#undef BZ_KCC_COPY_PROPAGATION_KLUDGE
#endif
#ifdef BZ_INLINE_GROUP1
#define _bz_inline1 inline
#else
#define _bz_inline1
#endif
#ifdef BZ_INLINE_GROUP2
#define _bz_inline2 inline
#else
#define _bz_inline2
#endif
#ifdef BZ_NO_INLINE_ET
#define _bz_inline_et
#else
#define _bz_inline_et inline
#endif
#ifdef BZ_ETPARMS_CONSTREF
#define BZ_ETPARM(X) const X&
#else
#define BZ_ETPARM(X) X
#endif
#ifdef __DECCXX
// The DEC cxx compiler has problems with loop unrolling
// because of aliasing. Loop unrolling and anti-aliasing
// is done by Blitz++.
#define BZ_PARTIAL_LOOP_UNROLL
#define BZ_ARRAY_STACK_TRAVERSAL_CSE_AND_ANTIALIAS
#define BZ_ARRAY_STACK_TRAVERSAL_UNROLL
#endif
/*
* BZ_NO_PROPAGATE(X) prevents the compiler from performing
* copy propagation on a variable. This is used for loop
* unrolling to prevent KAI C++ from rearranging the
* ordering of memory accesses.
*/
#define BZ_NO_PROPAGATE(X) X
#ifdef __KCC
#ifdef BZ_USE_NO_PROPAGATE
extern "C" int __kai_apply(const char*, ...);
#undef BZ_NO_PROPAGATE(X)
#define BZ_NO_PROPAGATE(X) __kai_apply("(%a)",&X)
#endif
#endif
#endif // BZ_TUNING_H
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