Mercurial > hg > truffle
view src/share/vm/code/vmreg.cpp @ 11860:762dc2f23d1c
InvokeWithException: make next successor a special begin node which has the same locationidentity as the invoke
InvokeWithExceptionNode has the unpleasant property that it is a ControlSplit
and MemoryCheckPoint at the same time. In terms of scheduling, a node cannot
be placed after a ControlSplit node as it denotes the end of a block. Thus,
instead of connecting a FloatingReadNode to the InvokeWithException node
directly (as lastLocationAccess), we point rather to the BeginNode
(non-exceptional case) or ExceptionBeginNode.
To preserve consistency regarding memory dependencies, the former node must be
also a MemoryCheckPoint.
author | Bernhard Urban <bernhard.urban@jku.at> |
---|---|
date | Wed, 02 Oct 2013 11:16:21 +0200 |
parents | 8c92982cbbc4 |
children |
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/* * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "asm/assembler.hpp" #include "code/vmreg.hpp" // First VMReg value that could refer to a stack slot VMReg VMRegImpl::stack0 = (VMReg)(intptr_t)((ConcreteRegisterImpl::number_of_registers + 7) & ~7); // VMRegs are 4 bytes wide on all platforms const int VMRegImpl::stack_slot_size = 4; const int VMRegImpl::slots_per_word = wordSize / stack_slot_size; const int VMRegImpl::register_count = ConcreteRegisterImpl::number_of_registers; // Register names const char *VMRegImpl::regName[ConcreteRegisterImpl::number_of_registers]; void VMRegImpl::print_on(outputStream* st) const { if( is_reg() ) { assert( VMRegImpl::regName[value()], "" ); st->print("%s",VMRegImpl::regName[value()]); } else if (is_stack()) { int stk = value() - stack0->value(); st->print("[%d]", stk*4); } else { st->print("BAD!"); } }