From 428dd03f5a7291d19f0c45fc314da9356ee22d63 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Wed, 25 Jun 2014 12:27:16 -0700 Subject: Remove HP_TIMING_DIFF_INIT and dl_hp_timing_overhead Without HP_TIMING_ACCUM, dl_hp_timing_overhead is write-only. If we remove it, there's no point in HP_TIMING_DIFF_INIT either. --- sysdeps/powerpc/powerpc32/power4/hp-timing.c | 24 ------------------------ sysdeps/powerpc/powerpc32/power4/hp-timing.h | 24 ------------------------ 2 files changed, 48 deletions(-) delete mode 100644 sysdeps/powerpc/powerpc32/power4/hp-timing.c (limited to 'sysdeps/powerpc/powerpc32/power4') diff --git a/sysdeps/powerpc/powerpc32/power4/hp-timing.c b/sysdeps/powerpc/powerpc32/power4/hp-timing.c deleted file mode 100644 index fcf5e45a2c..0000000000 --- a/sysdeps/powerpc/powerpc32/power4/hp-timing.c +++ /dev/null @@ -1,24 +0,0 @@ -/* Support for high precision, low overhead timing functions. - powerpc64 version. - Copyright (C) 2005-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 1998. - - 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 - . */ - -#include - -/* We have to define the variable for the overhead. */ -hp_timing_t _dl_hp_timing_overhead; diff --git a/sysdeps/powerpc/powerpc32/power4/hp-timing.h b/sysdeps/powerpc/powerpc32/power4/hp-timing.h index cd296c52e2..702efac396 100644 --- a/sysdeps/powerpc/powerpc32/power4/hp-timing.h +++ b/sysdeps/powerpc/powerpc32/power4/hp-timing.h @@ -45,9 +45,6 @@ - HP_TIMING_NOW: place timestamp for current time in variable given as parameter. - - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the - HP_TIMING_DIFF macro. - - HP_TIMING_DIFF: compute difference between two times and store it in a third. Source and destination might overlap. @@ -88,27 +85,6 @@ typedef unsigned long long int hp_timing_t; Var = ((hp_timing_t) hi << 32) | lo; \ } while (0) - -/* Use two 'mftb' instructions in a row to find out how long it takes. - On current POWER4, POWER5, and 970 processors mftb take ~10 cycles. */ -#define HP_TIMING_DIFF_INIT() \ - do { \ - if (GLRO(dl_hp_timing_overhead) == 0) \ - { \ - int __cnt = 5; \ - GLRO(dl_hp_timing_overhead) = ~0ull; \ - do \ - { \ - hp_timing_t __t1, __t2; \ - HP_TIMING_NOW (__t1); \ - HP_TIMING_NOW (__t2); \ - if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \ - GLRO(dl_hp_timing_overhead) = __t2 - __t1; \ - } \ - while (--__cnt > 0); \ - } \ - } while (0) - /* It's simple arithmetic in 64-bit. */ #define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start)) -- cgit v1.2.3-70-g09d2