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powerpc: Add optimized version of [l]lrintf
This patch makes use of optimized double version of llrint for single precision as both the versions return [long] long type.
This commit is contained in:
Rajalakshmi Srinivasaraghavan
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12
ChangeLog
12
ChangeLog
@ -1,3 +1,15 @@
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2017-06-21 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
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* sysdeps/powerpc/powerpc64/fpu/s_llrint.S
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(__llrintf): Define as strong alias of __llrint.
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(llrintf): Define as weak alias of __llrint.
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(__lrintf): Define as strong alias of __llrint.
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(lrintf): Define as weak alias of __llrint.
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* sysdeps/powerpc/powerpc64/power6x/fpu/s_llrint.S: Likewise.
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* sysdeps/powerpc/powerpc64/power8/fpu/s_llrint.S: Likewise.
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* sysdeps/powerpc/powerpc64/fpu/s_llrintf.S: Remove file content.
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* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrintf.c: New file.
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2017-06-20 Zack Weinberg <zackw@panix.com>
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* bits/signum-generic.h: Renamed from bits/signum.h.
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46
sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrintf.c
Normal file
46
sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrintf.c
Normal file
@ -0,0 +1,46 @@
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/* Multiple versions of llrintf.
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Copyright (C) 2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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/* Redefine lrintf/__lrintf so that the compiler won't complain about the type
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mismatch with the IFUNC selector in strong_alias below. */
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#define lrintf __hidden_lrintf
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#define __lrintf __hidden___lrintf
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#include <math.h>
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#undef lrintf
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#undef __lrintf
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#include "init-arch.h"
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extern __typeof (__llrintf) __llrint_ppc64 attribute_hidden;
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extern __typeof (__llrintf) __llrint_power6x attribute_hidden;
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extern __typeof (__llrintf) __llrint_power8 attribute_hidden;
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/* The ppc64 ABI passes float and double parameters in 64bit floating point
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registers (at least up to a point) as IEEE binary64 format, so effectively
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of "double" type. Both l[l]rint and l[l]rintf return long type. So these
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functions have identical signatures and functionality, and can use a
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single implementation. */
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libc_ifunc (__llrintf,
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(hwcap2 & PPC_FEATURE2_ARCH_2_07)
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? __llrint_power8 :
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(hwcap & PPC_FEATURE_POWER6_EXT)
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? __llrint_power6x
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: __llrint_ppc64);
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weak_alias (__llrintf, llrintf)
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strong_alias (__llrintf, __lrintf)
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weak_alias (__lrintf, lrintf)
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@ -34,6 +34,13 @@ ENTRY_TOCLESS (__llrint)
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strong_alias (__llrint, __lrint)
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weak_alias (__llrint, llrint)
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weak_alias (__lrint, lrint)
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/* The double version also works for single-precision as both float and
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double parameters are passed in 64bit FPRs and both versions are expected
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to return [long] long type. */
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strong_alias (__llrint, __llrintf)
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weak_alias (__llrint, llrintf)
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strong_alias (__lrint, __lrintf)
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weak_alias (__lrint, lrintf)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__llrint, __llrintl)
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@ -1,36 +1 @@
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/* Round double to long int. PowerPC64 version.
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Copyright (C) 2004-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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/* long long int[r3] __llrintf (float x[fp1]) */
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ENTRY_TOCLESS (__llrintf)
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CALL_MCOUNT 0
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fctid fp13,fp1
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stfd fp13,-16(r1)
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nop /* Insure the following load is in a different dispatch group */
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nop /* to avoid pipe stall on POWER4&5. */
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nop
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ld r3,-16(r1)
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blr
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END (__llrintf)
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strong_alias (__llrintf, __lrintf)
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weak_alias (__llrintf, llrintf)
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weak_alias (__lrintf, lrintf)
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/* __llrintf is in s_llrint.S. */
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@ -31,6 +31,13 @@ ENTRY_TOCLESS (__llrint)
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strong_alias (__llrint, __lrint)
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weak_alias (__llrint, llrint)
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weak_alias (__lrint, lrint)
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/* The double version also works for single-precision as both float and
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double parameters are passed in 64bit FPRs and both versions are expected
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to return [long] long type. */
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strong_alias (__llrint, __llrintf)
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weak_alias (__llrint, llrintf)
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strong_alias (__lrint, __lrintf)
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weak_alias (__lrint, lrintf)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__llrint, __llrintl)
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@ -32,6 +32,13 @@ END (__llrint)
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strong_alias (__llrint, __lrint)
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weak_alias (__llrint, llrint)
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weak_alias (__lrint, lrint)
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/* The double version also works for single-precision as both float and
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double parameters are passed in 64bit FPRs and both versions are expected
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to return [long] long type. */
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strong_alias (__llrint, __llrintf)
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weak_alias (__llrint, llrintf)
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strong_alias (__lrint, __lrintf)
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weak_alias (__lrint, lrintf)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__llrint, __llrintl)
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