Mercurial > hg > graal-compiler
view src/cpu/sparc/vm/vmreg_sparc.inline.hpp @ 995:ddd6f1182ae3
6883468: C2 compiler enters infinite loop in PhaseIterGVN::transform
Summary: Avoid ideal transformation ping-pong between AddPNode::Ideal() and CastX2PNode::Ideal().
Reviewed-by: cfang
author | kvn |
---|---|
date | Fri, 25 Sep 2009 13:26:02 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2006-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ inline VMReg RegisterImpl::as_VMReg() { if( this==noreg ) return VMRegImpl::Bad(); return VMRegImpl::as_VMReg(encoding() << 1 ); } inline VMReg FloatRegisterImpl::as_VMReg() { return VMRegImpl::as_VMReg( ConcreteRegisterImpl::max_gpr + encoding() ); } inline bool VMRegImpl::is_Register() { return value() >= 0 && value() < ConcreteRegisterImpl::max_gpr; } inline bool VMRegImpl::is_FloatRegister() { return value() >= ConcreteRegisterImpl::max_gpr && value() < ConcreteRegisterImpl::max_fpr; } inline Register VMRegImpl::as_Register() { assert( is_Register() && is_even(value()), "even-aligned GPR name" ); // Yuk return ::as_Register(value()>>1); } inline FloatRegister VMRegImpl::as_FloatRegister() { assert( is_FloatRegister(), "must be" ); // Yuk return ::as_FloatRegister( value() - ConcreteRegisterImpl::max_gpr ); } inline bool VMRegImpl::is_concrete() { assert(is_reg(), "must be"); int v = value(); if ( v < ConcreteRegisterImpl::max_gpr ) { return is_even(v); } // F0..F31 if ( v <= ConcreteRegisterImpl::max_gpr + 31) return true; if ( v < ConcreteRegisterImpl::max_fpr) { return is_even(v); } assert(false, "what register?"); return false; }