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e18743072b
This implements a set of vectorized math routines to be used by the compiler auto-vectorizer. Versions for vectors with 2 lanes up to 64 lanes (in powers of 2) are provided. These routines are based on the scalar versions of the math routines in libm/common, libm/math and libm/mathfp. They make extensive use of the GCC C vector extensions and GCN-specific builtins in GCC.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*
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* Copyright 2023 Siemens
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/* Based on newlib/libm/mathfp/ef_remainder.c in Newlib. */
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#include "amdgcnmach.h"
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v64sf v64sf_fmodf_aux (v64sf, v64sf, v64si);
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#if defined (__has_builtin) && __has_builtin (__builtin_gcn_fabsvf)
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DEF_VS_MATH_FUNC (v64sf, remainderf, v64sf x, v64sf p)
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{
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FUNCTION_INIT (v64sf);
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v64si hx;
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GET_FLOAT_WORD (hx, x, NO_COND);
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v64si hp;
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GET_FLOAT_WORD (hp, p, NO_COND);
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v64si sx = hx & 0x80000000;
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hp &= 0x7fffffff;
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hx &= 0x7fffffff;
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/* purge off exception values */
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/*if(hp==0) // p = 0 */
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/*if((hx>=0x7f800000)|| // x not finite
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((hp>0x7f800000))) // p is NaN */
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VECTOR_RETURN ((x*p) / (x*p),
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(hp == 0) | (hx >= 0x7f800000) | (hp > 0x7f800000));
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/* if (hp<=0x7effffff) // now x < 2p */
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VECTOR_COND_MOVE (x, v64sf_fmodf_aux (x, p+p, __mask), hp <= 0x7effffff);
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/*if ((hx-hp)==0) */
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VECTOR_RETURN (0.0f * x, (hx-hp) == 0);
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x = __builtin_gcn_fabsvf (x);
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p = __builtin_gcn_fabsvf (p);
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VECTOR_IF (hp < 0x01000000, cond)
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VECTOR_IF2 (x + x > p, cond2, cond)
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VECTOR_COND_MOVE (x, x - p, cond2);
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VECTOR_COND_MOVE (x, x - p, cond2 & (x + x >= p));
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VECTOR_ENDIF
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VECTOR_ELSE (cond)
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v64sf p_half = 0.5f * p;
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VECTOR_IF2 (x > p_half, cond2, cond)
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VECTOR_COND_MOVE (x, x - p, cond2);
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VECTOR_COND_MOVE (x, x - p, cond2 & (x >= p_half));
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VECTOR_ENDIF
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VECTOR_ENDIF
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GET_FLOAT_WORD (hx, x, NO_COND);
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SET_FLOAT_WORD (x, hx ^ sx, NO_COND);
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VECTOR_RETURN (x, NO_COND);
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FUNCTION_RETURN;
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}
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DEF_VARIANTS2 (remainderf, sf, sf)
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#endif
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