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125e39bfea
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.
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*
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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/e_remainder.c in Newlib. */
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#include "amdgcnmach.h"
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v64df v64df_fmod_aux (v64df, v64df, v64di);
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#if defined (__has_builtin) && __has_builtin (__builtin_gcn_fabsv)
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DEF_VD_MATH_FUNC (v64df, remainder, v64df x, v64df p)
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{
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FUNCTION_INIT (v64df);
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v64si hx, lx;
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EXTRACT_WORDS (hx, lx, x);
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v64si hp, lp;
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EXTRACT_WORDS (hp, lp, p);
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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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VECTOR_RETURN ((x * p) / (x * p), ((hp | lp) == 0) | ((hx >= 0x7ff00000)
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| /* x not finite */
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((hp >= 0x7ff00000) & /* p is NaN */
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(((hp - 0x7ff00000) | lp) != 0))));
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VECTOR_COND_MOVE (x, v64df_fmod_aux (x, p+p, __mask), hp <= 0x7fdfffff); // now x < 2p
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VECTOR_RETURN (0.0 * x, ((hx-hp)|(lx-lp))==0);
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x = __builtin_gcn_fabsv (x);
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p = __builtin_gcn_fabsv (p);
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VECTOR_IF (hp < 0x00200000, cond)
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VECTOR_IF2 (x + x > p, cond2, __builtin_convertvector(cond, v64di))
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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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v64df p_half = 0.5 * p;
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VECTOR_IF2 (x > p_half, cond2, __builtin_convertvector(cond, v64di))
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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_HIGH_WORD (hx, x, NO_COND);
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SET_HIGH_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 (remainder, df, df)
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#endif
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