75ad35b5c4
2017-11-30 Michael Meissner <meissner@linux.vnet.ibm.com> PR libgcc/83112 * config/rs6000/float128-ifunc.c (__addkf3_resolve): Use the correct type for all ifunc resolvers to silence -Wattribute-alias warnings. Eliminate the forward declaration of the resolver functions which is no longer needed. (__subkf3_resolve): Likewise. (__mulkf3_resolve): Likewise. (__divkf3_resolve): Likewise. (__negkf2_resolve): Likewise. (__eqkf2_resolve): Likewise. (__nekf2_resolve): Likewise. (__gekf2_resolve): Likewise. (__gtkf2_resolve): Likewise. (__lekf2_resolve): Likewise. (__ltkf2_resolve): Likewise. (__unordkf2_resolve): Likewise. (__extendsfkf2_resolve): Likewise. (__extenddfkf2_resolve): Likewise. (__trunckfsf2_resolve): Likewise. (__trunckfdf2_resolve): Likewise. (__fixkfsi_resolve): Likewise. (__fixkfdi_resolve): Likewise. (__fixunskfsi_resolve): Likewise. (__fixunskfdi_resolve): Likewise. (__floatsikf_resolve): Likewise. (__floatdikf_resolve): Likewise. (__floatunsikf_resolve): Likewise. (__floatundikf_resolve): Likewise. (__extendkftf2_resolve): Likewise. (__trunctfkf2_resolve): Likewise. PR libgcc/83103 * config/rs6000/quad-float128.h (TF): Don't define if long double is IEEE 128-bit floating point. (TCtype): Define as either TCmode or KCmode, depending on whether long double is IEEE 128-bit floating point. (__mulkc3_sw): Add declarations for software/hardware versions of complex multiply/divide. (__divkc3_sw): Likewise. (__mulkc3_hw): Likewise. (__divkc3_hw): Likewise. * config/rs6000/_mulkc3.c (_mulkc3): If we are building ifunc handlers to switch between using software emulation and hardware float128 instructions, build the complex multiply/divide functions for both software and hardware support. * config/rs6000/_divkc3.c (_divkc3): Likewise. * config/rs6000/float128-ifunc.c (__mulkc3_resolve): Likewise. (__divkc3_resolve): Likewise. (__mulkc3): Likewise. (__divkc3): Likewise. * config/rs6000/t-float128-hw (fp128_hardfp_src): Likewise. (fp128_hw_src): Likewise. (fp128_hw_static_obj): Likewise. (fp128_hw_shared_obj): Likewise. (_mulkc3-hw.c): Create _mulkc3-hw.c and _divkc3-hw.c from _mulkc3.c and _divkc3.c, changing the function name. (_divkc3-hw.c): Likewise. * config/rs6000/t-float128 (clean-float128): Delete _mulkc3-hw.c and _divkc3-hw.c. From-SVN: r255282
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/* Copyright (C) 1989-2017 Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 3, or (at your option) any later
|
|
version.
|
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* This is a temporary specialization of code from libgcc/libgcc2.c. */
|
|
|
|
typedef float KFtype __attribute__ ((mode (KF)));
|
|
typedef __complex float KCtype __attribute__ ((mode (KC)));
|
|
|
|
#define COPYSIGN(x,y) __builtin_copysignq (x, y)
|
|
#define INFINITY __builtin_infq ()
|
|
#define FABS __builtin_fabsq
|
|
#define isnan __builtin_isnan
|
|
#define isinf __builtin_isinf
|
|
#define isfinite __builtin_isfinite
|
|
|
|
#if defined(FLOAT128_HW_INSNS) && !defined(__divkc3)
|
|
#define __divkc3 __divkc3_sw
|
|
#endif
|
|
|
|
KCtype
|
|
__divkc3 (KFtype a, KFtype b, KFtype c, KFtype d)
|
|
{
|
|
KFtype denom, ratio, x, y;
|
|
KCtype res;
|
|
|
|
/* ??? We can get better behavior from logarithmic scaling instead of
|
|
the division. But that would mean starting to link libgcc against
|
|
libm. We could implement something akin to ldexp/frexp as gcc builtins
|
|
fairly easily... */
|
|
if (FABS (c) < FABS (d))
|
|
{
|
|
ratio = c / d;
|
|
denom = (c * ratio) + d;
|
|
x = ((a * ratio) + b) / denom;
|
|
y = ((b * ratio) - a) / denom;
|
|
}
|
|
else
|
|
{
|
|
ratio = d / c;
|
|
denom = (d * ratio) + c;
|
|
x = ((b * ratio) + a) / denom;
|
|
y = (b - (a * ratio)) / denom;
|
|
}
|
|
|
|
/* Recover infinities and zeros that computed as NaN+iNaN; the only cases
|
|
are nonzero/zero, infinite/finite, and finite/infinite. */
|
|
if (isnan (x) && isnan (y))
|
|
{
|
|
if (c == 0.0 && d == 0.0 && (!isnan (a) || !isnan (b)))
|
|
{
|
|
x = COPYSIGN (INFINITY, c) * a;
|
|
y = COPYSIGN (INFINITY, c) * b;
|
|
}
|
|
else if ((isinf (a) || isinf (b)) && isfinite (c) && isfinite (d))
|
|
{
|
|
a = COPYSIGN (isinf (a) ? 1 : 0, a);
|
|
b = COPYSIGN (isinf (b) ? 1 : 0, b);
|
|
x = INFINITY * (a * c + b * d);
|
|
y = INFINITY * (b * c - a * d);
|
|
}
|
|
else if ((isinf (c) || isinf (d)) && isfinite (a) && isfinite (b))
|
|
{
|
|
c = COPYSIGN (isinf (c) ? 1 : 0, c);
|
|
d = COPYSIGN (isinf (d) ? 1 : 0, d);
|
|
x = 0.0 * (a * c + b * d);
|
|
y = 0.0 * (b * c - a * d);
|
|
}
|
|
}
|
|
|
|
__real__ res = x;
|
|
__imag__ res = y;
|
|
return res;
|
|
}
|