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Optimize trunc{,f} on sparc.
* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile: Add vis3 trunc{,f} to libm-sysdep_routes. * sysdeps/sparc/sparc64/fpu/multiarch/Makefile: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc-vis3.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf-vis3.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/s_trunc.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/s_truncf.S: New file. * sysdeps/sparc/sparc64/fpu/multiarch/s_trunc-vis3.S: New file. * sysdeps/sparc/sparc64/fpu/multiarch/s_trunc.S: New file. * sysdeps/sparc/sparc64/fpu/multiarch/s_truncf-vis3.S: New file. * sysdeps/sparc/sparc64/fpu/multiarch/s_truncf.S: New file. * sysdeps/sparc/sparc64/fpu/s_trunc.S: New file. * sysdeps/sparc/sparc64/fpu/s_truncf.S: New file.
This commit is contained in:
parent
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ChangeLog
19
ChangeLog
@ -1,5 +1,24 @@
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2013-01-15 David S. Miller <davem@davemloft.net>
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* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile: Add vis3
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trunc{,f} to libm-sysdep_routes.
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* sysdeps/sparc/sparc64/fpu/multiarch/Makefile: Likewise.
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* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc-vis3.S: New
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file.
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* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc.S: New file.
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* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf-vis3.S: New
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file.
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* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf.S: New
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file.
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* sysdeps/sparc/sparc32/sparcv9/fpu/s_trunc.S: New file.
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* sysdeps/sparc/sparc32/sparcv9/fpu/s_truncf.S: New file.
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* sysdeps/sparc/sparc64/fpu/multiarch/s_trunc-vis3.S: New file.
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* sysdeps/sparc/sparc64/fpu/multiarch/s_trunc.S: New file.
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* sysdeps/sparc/sparc64/fpu/multiarch/s_truncf-vis3.S: New file.
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* sysdeps/sparc/sparc64/fpu/multiarch/s_truncf.S: New file.
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* sysdeps/sparc/sparc64/fpu/s_trunc.S: New file.
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* sysdeps/sparc/sparc64/fpu/s_truncf.S: New file.
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* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile: Add vis3
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nearbyint{,f} to libm-sysdep_routes.
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* sysdeps/sparc/sparc64/fpu/multiarch/Makefile: Likewise.
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@ -8,7 +8,8 @@ libm-sysdep_routines += m_copysignf-vis3 m_copysign-vis3 s_ceilf-vis3 \
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s_rintf-vis3 s_rint-vis3 w_sqrt-vis3 w_sqrtf-vis3 \
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s_fminf-vis3 s_fmin-vis3 s_fmaxf-vis3 s_fmax-vis3 \
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s_fmaf-vis3 s_fma-vis3 s_fdimf-vis3 s_fdim-vis3 \
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s_nearbyint-vis3 s_nearbyintf-vis3
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s_nearbyint-vis3 s_nearbyintf-vis3 s_truncf-vis3 \
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s_trunc-vis3
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sysdep_routines += s_copysignf-vis3 s_copysign-vis3
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endif
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endif
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57
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc-vis3.S
Normal file
57
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc-vis3.S
Normal file
@ -0,0 +1,57 @@
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/* Truncate argument to nearest integral value not larger than
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the argument, sparc32 v9 vis3 version.
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Copyright (C) 2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David S. Miller <davem@davemloft.net>, 2013.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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/* We pop constants into the FPU registers using the incoming
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argument stack slots, since this avoid having to use any PIC
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references. We also thus avoid having to allocate a register
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window.
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VIS instructions are used to facilitate the formation of
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easier constants, and the propagation of the sign bit. */
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#define TWO_FIFTYTWO 0x43300000 /* 2**52 */
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#define ZERO %f10 /* 0.0 */
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#define SIGN_BIT %f12 /* -0.0 */
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ENTRY (__trunc_vis3)
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sethi %hi(TWO_FIFTYTWO), %o2
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sllx %o0, 32, %o0
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or %o0, %o1, %o0
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fzero ZERO
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movxtod %o0, %f0
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sllx %o2, 32, %o2
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fnegd ZERO, SIGN_BIT
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movxtod %o2, %f16
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fabsd %f0, %f14
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fcmpd %fcc3, %f14, %f16
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fmovduge %fcc3, ZERO, %f14
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fand %f0, SIGN_BIT, SIGN_BIT
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fdtox %f14, %f14
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fxtod %f14, %f14
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faddd %f0, ZERO, %f18
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fmovduge %fcc3, %f18, %f14
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retl
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for %f14, SIGN_BIT, %f0
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END (__trunc_vis3)
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19
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc.S
Normal file
19
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc.S
Normal file
@ -0,0 +1,19 @@
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#include <sparc-ifunc.h>
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#include <math_ldbl_opt.h>
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SPARC_ASM_VIS3_IFUNC(trunc)
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weak_alias (__trunc, trunc)
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#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
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compat_symbol (libm, __trunc, truncl, GLIBC_2_1)
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#endif
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# undef weak_alias
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# define weak_alias(a, b)
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# undef compat_symbol
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# define compat_symbol(a, b, c, d)
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#define __trunc __trunc_generic
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#include "../s_trunc.S"
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53
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf-vis3.S
Normal file
53
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf-vis3.S
Normal file
@ -0,0 +1,53 @@
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/* Truncate argument to nearest integral value not larger than
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the argument, sparc32 v9 vis3 version.
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Copyright (C) 2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David S. Miller <davem@davemloft.net>, 2013.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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/* We pop constants into the FPU registers using the incoming
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argument stack slots, since this avoid having to use any PIC
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references. We also thus avoid having to allocate a register
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window.
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VIS instructions are used to facilitate the formation of
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easier constants, and the propagation of the sign bit. */
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#define TWO_TWENTYTHREE 0x4b000000 /* 2**23 */
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#define ZERO %f10 /* 0.0 */
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#define SIGN_BIT %f12 /* -0.0 */
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ENTRY (__truncf_vis3)
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movwtos %o0, %f1
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sethi %hi(TWO_TWENTYTHREE), %o2
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fzeros ZERO
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fnegs ZERO, SIGN_BIT
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movwtos %o2, %f16
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fabss %f1, %f14
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fcmps %fcc3, %f14, %f16
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fmovsuge %fcc3, ZERO, %f14
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fands %f1, SIGN_BIT, SIGN_BIT
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fstoi %f14, %f14
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fitos %f14, %f14
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fadds %f1, ZERO, %f18
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fmovsuge %fcc3, %f18, %f14
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retl
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fors %f14, SIGN_BIT, %f0
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END (__truncf_vis3)
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12
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf.S
Normal file
12
sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf.S
Normal file
@ -0,0 +1,12 @@
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#include <sparc-ifunc.h>
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SPARC_ASM_VIS3_IFUNC(truncf)
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weak_alias (__truncf, truncf)
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# undef weak_alias
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# define weak_alias(a, b)
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#define __truncf __truncf_generic
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#include "../s_truncf.S"
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64
sysdeps/sparc/sparc32/sparcv9/fpu/s_trunc.S
Normal file
64
sysdeps/sparc/sparc32/sparcv9/fpu/s_trunc.S
Normal file
@ -0,0 +1,64 @@
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/* Truncate argument to nearest integral value not larger than
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the argument, sparc32 v9 version.
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Copyright (C) 2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David S. Miller <davem@davemloft.net>, 2013.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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|
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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/* We pop constants into the FPU registers using the incoming
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argument stack slots, since this avoid having to use any PIC
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references. We also thus avoid having to allocate a register
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window.
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VIS instructions are used to facilitate the formation of
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easier constants, and the propagation of the sign bit. */
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#define TWO_FIFTYTWO 0x43300000 /* 2**52 */
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#define ZERO %f10 /* 0.0 */
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#define SIGN_BIT %f12 /* -0.0 */
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ENTRY (__trunc)
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sethi %hi(TWO_FIFTYTWO), %o2
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sllx %o0, 32, %o0
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or %o0, %o1, %o0
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fzero ZERO
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stx %o0, [%sp + 72]
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sllx %o2, 32, %o2
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fnegd ZERO, SIGN_BIT
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ldd [%sp + 72], %f0
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stx %o2, [%sp + 72]
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fabsd %f0, %f14
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ldd [%sp + 72], %f16
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fcmpd %fcc3, %f14, %f16
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fmovduge %fcc3, ZERO, %f14
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fand %f0, SIGN_BIT, SIGN_BIT
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fdtox %f14, %f14
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fxtod %f14, %f14
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faddd %f0, ZERO, %f18
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fmovduge %fcc3, %f18, %f14
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retl
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for %f14, SIGN_BIT, %f0
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END (__trunc)
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weak_alias (__trunc, trunc)
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#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
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compat_symbol (libm, __trunc, truncl, GLIBC_2_1)
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#endif
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56
sysdeps/sparc/sparc32/sparcv9/fpu/s_truncf.S
Normal file
56
sysdeps/sparc/sparc32/sparcv9/fpu/s_truncf.S
Normal file
@ -0,0 +1,56 @@
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/* Truncate argument to nearest integral value not larger than
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the argument, sparc32 v9 version.
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Copyright (C) 2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David S. Miller <davem@davemloft.net>, 2013.
|
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
|
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License as published by the Free Software Foundation; either
|
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version 2.1 of the License, or (at your option) any later version.
|
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|
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The GNU C Library is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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Lesser General Public License for more details.
|
||||
|
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You should have received a copy of the GNU Lesser General Public
|
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License along with the GNU C Library; if not, see
|
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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/* We pop constants into the FPU registers using the incoming
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argument stack slots, since this avoid having to use any PIC
|
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references. We also thus avoid having to allocate a register
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window.
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VIS instructions are used to facilitate the formation of
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easier constants, and the propagation of the sign bit. */
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#define TWO_TWENTYTHREE 0x4b000000 /* 2**23 */
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#define ZERO %f10 /* 0.0 */
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#define SIGN_BIT %f12 /* -0.0 */
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ENTRY (__truncf)
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st %o0, [%sp + 68]
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sethi %hi(TWO_TWENTYTHREE), %o2
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fzeros ZERO
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ld [%sp + 68], %f1
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fnegs ZERO, SIGN_BIT
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st %o2, [%sp + 68]
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fabss %f1, %f14
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ld [%sp + 68], %f16
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fcmps %fcc3, %f14, %f16
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fmovsuge %fcc3, ZERO, %f14
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fands %f1, SIGN_BIT, SIGN_BIT
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fstoi %f14, %f14
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fitos %f14, %f14
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fadds %f1, ZERO, %f18
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fmovsuge %fcc3, %f18, %f14
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retl
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fors %f14, SIGN_BIT, %f0
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END (__truncf)
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weak_alias (__truncf, truncf)
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@ -9,7 +9,8 @@ libm-sysdep_routines += m_signbitf-vis3 m_signbit-vis3 s_ceilf-vis3 \
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s_lrintf-vis3 s_lrint-vis3 s_rintf-vis3 \
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s_rint-vis3 s_fminf-vis3 s_fmin-vis3 \
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s_fmaxf-vis3 s_fmax-vis3 s_fmaf-vis3 \
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s_fma-vis3 s_nearbyint-vis3 s_nearbyintf-vis3
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s_fma-vis3 s_nearbyint-vis3 s_nearbyintf-vis3 \
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s_truncf-vis3 s_trunc-vis3
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sysdep_routines += s_signbitf-vis3 s_signbit-vis3 s_finitef-vis3 \
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s_finite-vis3 s_isinff-vis3 s_isinf-vis3 \
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s_isnanf-vis3 s_isnan-vis3
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|
53
sysdeps/sparc/sparc64/fpu/multiarch/s_trunc-vis3.S
Normal file
53
sysdeps/sparc/sparc64/fpu/multiarch/s_trunc-vis3.S
Normal file
@ -0,0 +1,53 @@
|
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/* Truncate argument to nearest integral value not larger than
|
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the argument, sparc64 vis3 version.
|
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|
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Copyright (C) 2013 Free Software Foundation, Inc.
|
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This file is part of the GNU C Library.
|
||||
Contributed by David S. Miller <davem@davemloft.net>, 2013.
|
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|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
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#include <sysdep.h>
|
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|
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/* We pop constants into the FPU registers using the incoming
|
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argument stack slots, since this avoid having to use any PIC
|
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references. We also thus avoid having to allocate a register
|
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window.
|
||||
|
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VIS instructions are used to facilitate the formation of
|
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easier constants, and the propagation of the sign bit. */
|
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|
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#define TWO_FIFTYTWO 0x43300000 /* 2**52 */
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#define ZERO %f10 /* 0.0 */
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#define SIGN_BIT %f12 /* -0.0 */
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ENTRY (__trunc_vis3)
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sethi %hi(TWO_FIFTYTWO), %o2
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sllx %o2, 32, %o2
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fzero ZERO
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fnegd ZERO, SIGN_BIT
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movxtod %o2, %f16
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fabsd %f0, %f14
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fcmpd %fcc3, %f14, %f16
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fmovduge %fcc3, ZERO, %f14
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fand %f0, SIGN_BIT, SIGN_BIT
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fdtox %f14, %f14
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fxtod %f14, %f14
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faddd %f0, ZERO, %f18
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fmovduge %fcc3, %f18, %f14
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retl
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for %f14, SIGN_BIT, %f0
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END (__trunc_vis3)
|
12
sysdeps/sparc/sparc64/fpu/multiarch/s_trunc.S
Normal file
12
sysdeps/sparc/sparc64/fpu/multiarch/s_trunc.S
Normal file
@ -0,0 +1,12 @@
|
||||
#include <sparc-ifunc.h>
|
||||
|
||||
SPARC_ASM_VIS3_IFUNC(trunc)
|
||||
|
||||
weak_alias (__trunc, trunc)
|
||||
|
||||
# undef weak_alias
|
||||
# define weak_alias(a, b)
|
||||
|
||||
#define __trunc __trunc_generic
|
||||
|
||||
#include "../s_trunc.S"
|
52
sysdeps/sparc/sparc64/fpu/multiarch/s_truncf-vis3.S
Normal file
52
sysdeps/sparc/sparc64/fpu/multiarch/s_truncf-vis3.S
Normal file
@ -0,0 +1,52 @@
|
||||
/* Truncate argument to nearest integral value not larger than
|
||||
the argument, sparc64 vis3 version.
|
||||
|
||||
Copyright (C) 2013 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by David S. Miller <davem@davemloft.net>, 2013.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
|
||||
/* We pop constants into the FPU registers using the incoming
|
||||
argument stack slots, since this avoid having to use any PIC
|
||||
references. We also thus avoid having to allocate a register
|
||||
window.
|
||||
|
||||
VIS instructions are used to facilitate the formation of
|
||||
easier constants, and the propagation of the sign bit. */
|
||||
|
||||
#define TWO_TWENTYTHREE 0x4b000000 /* 2**23 */
|
||||
|
||||
#define ZERO %f10 /* 0.0 */
|
||||
#define SIGN_BIT %f12 /* -0.0 */
|
||||
|
||||
ENTRY (__truncf_vis3)
|
||||
sethi %hi(TWO_TWENTYTHREE), %o2
|
||||
fzeros ZERO
|
||||
fnegs ZERO, SIGN_BIT
|
||||
movwtos %o2,%f16
|
||||
fabss %f1, %f14
|
||||
fcmps %fcc3, %f14, %f16
|
||||
fmovsuge %fcc3, ZERO, %f14
|
||||
fands %f1, SIGN_BIT, SIGN_BIT
|
||||
fstoi %f14, %f14
|
||||
fitos %f14, %f14
|
||||
fadds %f1, ZERO, %f18
|
||||
fmovsuge %fcc3, %f18, %f14
|
||||
retl
|
||||
fors %f14, SIGN_BIT, %f0
|
||||
END (__truncf_vis3)
|
12
sysdeps/sparc/sparc64/fpu/multiarch/s_truncf.S
Normal file
12
sysdeps/sparc/sparc64/fpu/multiarch/s_truncf.S
Normal file
@ -0,0 +1,12 @@
|
||||
#include <sparc-ifunc.h>
|
||||
|
||||
SPARC_ASM_VIS3_IFUNC(truncf)
|
||||
|
||||
weak_alias (__truncf, truncf)
|
||||
|
||||
# undef weak_alias
|
||||
# define weak_alias(a, b)
|
||||
|
||||
#define __truncf __truncf_generic
|
||||
|
||||
#include "../s_truncf.S"
|
55
sysdeps/sparc/sparc64/fpu/s_trunc.S
Normal file
55
sysdeps/sparc/sparc64/fpu/s_trunc.S
Normal file
@ -0,0 +1,55 @@
|
||||
/* Truncate argument to nearest integral value not larger than
|
||||
the argument, sparc64 version.
|
||||
|
||||
Copyright (C) 2013 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by David S. Miller <davem@davemloft.net>, 2013.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
|
||||
/* We pop constants into the FPU registers using the incoming
|
||||
argument stack slots, since this avoid having to use any PIC
|
||||
references. We also thus avoid having to allocate a register
|
||||
window.
|
||||
|
||||
VIS instructions are used to facilitate the formation of
|
||||
easier constants, and the propagation of the sign bit. */
|
||||
|
||||
#define TWO_FIFTYTWO 0x43300000 /* 2**52 */
|
||||
|
||||
#define ZERO %f10 /* 0.0 */
|
||||
#define SIGN_BIT %f12 /* -0.0 */
|
||||
|
||||
ENTRY (__trunc)
|
||||
sethi %hi(TWO_FIFTYTWO), %o2
|
||||
sllx %o2, 32, %o2
|
||||
fzero ZERO
|
||||
fnegd ZERO, SIGN_BIT
|
||||
stx %o2, [%sp + STACK_BIAS + 128]
|
||||
fabsd %f0, %f14
|
||||
ldd [%sp + STACK_BIAS + 128], %f16
|
||||
fcmpd %fcc3, %f14, %f16
|
||||
fmovduge %fcc3, ZERO, %f14
|
||||
fand %f0, SIGN_BIT, SIGN_BIT
|
||||
fdtox %f14, %f14
|
||||
fxtod %f14, %f14
|
||||
faddd %f0, ZERO, %f18
|
||||
fmovduge %fcc3, %f18, %f14
|
||||
retl
|
||||
for %f14, SIGN_BIT, %f0
|
||||
END (__trunc)
|
||||
weak_alias (__trunc, trunc)
|
54
sysdeps/sparc/sparc64/fpu/s_truncf.S
Normal file
54
sysdeps/sparc/sparc64/fpu/s_truncf.S
Normal file
@ -0,0 +1,54 @@
|
||||
/* Truncate argument to nearest integral value not larger than
|
||||
the argument, sparc64 version.
|
||||
|
||||
Copyright (C) 2013 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by David S. Miller <davem@davemloft.net>, 2013.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
|
||||
/* We pop constants into the FPU registers using the incoming
|
||||
argument stack slots, since this avoid having to use any PIC
|
||||
references. We also thus avoid having to allocate a register
|
||||
window.
|
||||
|
||||
VIS instructions are used to facilitate the formation of
|
||||
easier constants, and the propagation of the sign bit. */
|
||||
|
||||
#define TWO_TWENTYTHREE 0x4b000000 /* 2**23 */
|
||||
|
||||
#define ZERO %f10 /* 0.0 */
|
||||
#define SIGN_BIT %f12 /* -0.0 */
|
||||
|
||||
ENTRY (__truncf)
|
||||
sethi %hi(TWO_TWENTYTHREE), %o2
|
||||
fzeros ZERO
|
||||
fnegs ZERO, SIGN_BIT
|
||||
st %o2, [%sp + STACK_BIAS + 128]
|
||||
fabss %f1, %f14
|
||||
ld [%sp + STACK_BIAS + 128], %f16
|
||||
fcmps %fcc3, %f14, %f16
|
||||
fmovsuge %fcc3, ZERO, %f14
|
||||
fands %f1, SIGN_BIT, SIGN_BIT
|
||||
fstoi %f14, %f14
|
||||
fitos %f14, %f14
|
||||
fadds %f1, ZERO, %f18
|
||||
fmovsuge %fcc3, %f18, %f14
|
||||
retl
|
||||
fors %f14, SIGN_BIT, %f0
|
||||
END (__truncf)
|
||||
weak_alias (__truncf, truncf)
|
Loading…
Reference in New Issue
Block a user