jdk8-mips64-public/hotspot: src/share/vm/shark/sharkConstant.cpp@d2ede61b7a12 (annotated)

src/share/vm/shark/sharkConstant.cpp@d2ede61b7a12 (annotated)

src/share/vm/shark/sharkConstant.cpp

Wed, 11 Aug 2010 05:51:21 -0700

author: twisti
date: Wed, 11 Aug 2010 05:51:21 -0700
changeset 2047: d2ede61b7a12
child 2314: f95d63e2154a
permissions: -rw-r--r--

6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>

 /*
  * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2009 Red Hat, Inc.
  * 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 "incls/_precompiled.incl"
 #include "incls/_sharkConstant.cpp.incl"
 using namespace llvm;
 SharkConstant* SharkConstant::for_ldc(ciBytecodeStream *iter) {
   ciConstant constant = iter->get_constant();
   ciType *type = NULL;
   if (constant.basic_type() == T_OBJECT) {
     ciEnv *env = ciEnv::current();
     if (constant.as_object()->is_klass())
       type = env->Class_klass();
     else
       type = env->String_klass();
   }
   return new SharkConstant(constant, type);
 }
 SharkConstant* SharkConstant::for_field(ciBytecodeStream *iter) {
   bool will_link;
   ciField *field = iter->get_field(will_link);
   assert(will_link, "typeflow responsibility");
   return new SharkConstant(field->constant_value(), field->type());
 }
 SharkConstant::SharkConstant(ciConstant constant, ciType *type) {
   SharkValue *value = NULL;
   switch (constant.basic_type()) {
   case T_BOOLEAN:
   case T_BYTE:
   case T_CHAR:
   case T_SHORT:
   case T_INT:
     value = SharkValue::jint_constant(constant.as_int());
     break;
   case T_LONG:
     value = SharkValue::jlong_constant(constant.as_long());
     break;
   case T_FLOAT:
     value = SharkValue::jfloat_constant(constant.as_float());
     break;
   case T_DOUBLE:
     value = SharkValue::jdouble_constant(constant.as_double());
     break;
   case T_OBJECT:
   case T_ARRAY:
     break;
   case T_ILLEGAL:
     // out of memory
     _is_loaded = false;
     return;
   default:
     tty->print_cr("Unhandled type %s", type2name(constant.basic_type()));
     ShouldNotReachHere();
   }
   // Handle primitive types.  We create SharkValues for these
   // now; doing so doesn't emit any code, and it allows us to
   // delegate a bunch of stuff to the SharkValue code.
   if (value) {
     _value       = value;
     _is_loaded   = true;
     _is_nonzero  = value->zero_checked();
     _is_two_word = value->is_two_word();
     return;
   }
   // Handle reference types.  This is tricky because some
   // ciObjects are psuedo-objects that refer to oops which
   // have yet to be created.  We need to spot the unloaded
   // objects (which differ between ldc* and get*, thanks!)
   ciObject *object = constant.as_object();
   assert(type != NULL, "shouldn't be");
   if (object->is_klass()) {
     // The constant returned for a klass is the ciKlass
     // for the entry, but we want the java_mirror.
     ciKlass *klass = object->as_klass();
     if (!klass->is_loaded()) {
       _is_loaded = false;
       return;
     }
     object = klass->java_mirror();
   }
   if (object->is_null_object() || !object->can_be_constant()) {
     _is_loaded = false;
     return;
   }
   _value       = NULL;
   _object      = object;
   _type        = type;
   _is_loaded   = true;
   _is_nonzero  = true;
   _is_two_word = false;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/shark/sharkConstant.cpp@d2ede61b7a12 (annotated)

src/share/vm/shark/sharkConstant.cpp