Mon, 23 Jun 2008 14:11:12 -0700
6708714: Optimize long LShift on 32-bits x86
Summary: For small (1-3 bits) left long shifts in 32-bits VM use sets of add+addc instructions instead of shld+shl on new AMD cpus.
Reviewed-by: never
Contributed-by: shrinivas.joshi@amd.com
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_osThread.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | |
duke@435 | 29 | OSThread::OSThread(OSThreadStartFunc start_proc, void* start_parm) { |
duke@435 | 30 | pd_initialize(); |
duke@435 | 31 | set_start_proc(start_proc); |
duke@435 | 32 | set_start_parm(start_parm); |
duke@435 | 33 | set_interrupted(false); |
duke@435 | 34 | } |
duke@435 | 35 | |
duke@435 | 36 | OSThread::~OSThread() { |
duke@435 | 37 | pd_destroy(); |
duke@435 | 38 | } |
duke@435 | 39 | |
duke@435 | 40 | // Printing |
duke@435 | 41 | void OSThread::print_on(outputStream *st) const { |
duke@435 | 42 | st->print("nid=0x%lx ", thread_id()); |
duke@435 | 43 | switch (_state) { |
duke@435 | 44 | case ALLOCATED: st->print("allocated "); break; |
duke@435 | 45 | case INITIALIZED: st->print("initialized "); break; |
duke@435 | 46 | case RUNNABLE: st->print("runnable "); break; |
duke@435 | 47 | case MONITOR_WAIT: st->print("waiting for monitor entry "); break; |
duke@435 | 48 | case CONDVAR_WAIT: st->print("waiting on condition "); break; |
duke@435 | 49 | case OBJECT_WAIT: st->print("in Object.wait() "); break; |
duke@435 | 50 | case BREAKPOINTED: st->print("at breakpoint"); break; |
duke@435 | 51 | case SLEEPING: st->print("sleeping"); break; |
duke@435 | 52 | case ZOMBIE: st->print("zombie"); break; |
duke@435 | 53 | default: st->print("unknown state %d", _state); break; |
duke@435 | 54 | } |
duke@435 | 55 | } |