truffle: src/share/vm/ci/ciArray.cpp annotate

annotate src/share/vm/ci/ciArray.cpp @ 14518:d8041d695d19

Merged with jdk9/dev/hotspot changeset 3812c088b945

author	twisti
date	Tue, 11 Mar 2014 18:45:59 -0700
parents	de6a9e811145
children	4ca6dc0799b6

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
14223 de6a9e811145 8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013 mikael parents: 12190 diff changeset	2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 0 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 0 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 0 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #include "ci/ciArray.hpp"
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	27 #include "ci/ciArrayKlass.hpp"
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	28 #include "ci/ciConstant.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "ci/ciKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30 #include "ci/ciUtilities.hpp"
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	31 #include "oops/objArrayOop.hpp"
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	32 #include "oops/typeArrayOop.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	33
a61af66fc99e Initial load duke parents: diff changeset	34 // ciArray
a61af66fc99e Initial load duke parents: diff changeset	35 //
a61af66fc99e Initial load duke parents: diff changeset	36 // This class represents an arrayOop in the HotSpot virtual
a61af66fc99e Initial load duke parents: diff changeset	37 // machine.
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	38 static BasicType fixup_element_type(BasicType bt) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	39 if (bt == T_ARRAY) return T_OBJECT;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	40 if (bt == T_BOOLEAN) return T_BYTE;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	41 return bt;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	42 }
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	43
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	44 ciConstant ciArray::element_value_impl(BasicType elembt,
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	45 arrayOop ary,
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	46 int index) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	47 if (ary == NULL)
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	48 return ciConstant();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	49 assert(ary->is_array(), "");
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	50 if (index < 0 \|\| index >= ary->length())
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	51 return ciConstant();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	52 ArrayKlass* ak = (ArrayKlass*) ary->klass();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	53 BasicType abt = ak->element_type();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	54 if (fixup_element_type(elembt) !=
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	55 fixup_element_type(abt))
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	56 return ciConstant();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	57 switch (elembt) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	58 case T_ARRAY:
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	59 case T_OBJECT:
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	60 {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	61 assert(ary->is_objArray(), "");
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	62 objArrayOop objary = (objArrayOop) ary;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	63 oop elem = objary->obj_at(index);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	64 ciEnv* env = CURRENT_ENV;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	65 ciObject* box = env->get_object(elem);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	66 return ciConstant(T_OBJECT, box);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	67 }
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	68 }
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	69 assert(ary->is_typeArray(), "");
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	70 typeArrayOop tary = (typeArrayOop) ary;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	71 jint value = 0;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	72 switch (elembt) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	73 case T_LONG: return ciConstant(tary->long_at(index));
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	74 case T_FLOAT: return ciConstant(tary->float_at(index));
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	75 case T_DOUBLE: return ciConstant(tary->double_at(index));
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	76 default: return ciConstant();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	77 case T_BYTE: value = tary->byte_at(index); break;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	78 case T_BOOLEAN: value = tary->byte_at(index) & 1; break;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	79 case T_SHORT: value = tary->short_at(index); break;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	80 case T_CHAR: value = tary->char_at(index); break;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	81 case T_INT: value = tary->int_at(index); break;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	82 }
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	83 return ciConstant(elembt, value);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	84 }
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	85
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	86 // ------------------------------------------------------------------
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	87 // ciArray::element_value
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	88 //
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	89 // Current value of an element.
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	90 // Returns T_ILLEGAL if there is no element at the given index.
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	91 ciConstant ciArray::element_value(int index) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	92 BasicType elembt = element_basic_type();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	93 GUARDED_VM_ENTRY(
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	94 return element_value_impl(elembt, get_arrayOop(), index);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	95 )
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	96 }
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	97
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	98 // ------------------------------------------------------------------
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	99 // ciArray::element_value_by_offset
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	100 //
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	101 // Current value of an element at the specified offset.
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	102 // Returns T_ILLEGAL if there is no element at the given offset.
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	103 ciConstant ciArray::element_value_by_offset(intptr_t element_offset) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	104 BasicType elembt = element_basic_type();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	105 intptr_t shift = exact_log2(type2aelembytes(elembt));
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	106 intptr_t header = arrayOopDesc::base_offset_in_bytes(elembt);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	107 intptr_t index = (element_offset - header) >> shift;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	108 intptr_t offset = header + ((intptr_t)index << shift);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	109 if (offset != element_offset \|\| index != (jint)index)
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	110 return ciConstant();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	111 return element_value((jint) index);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 1972 diff changeset	112 }
0 a61af66fc99e Initial load duke parents: diff changeset	113
a61af66fc99e Initial load duke parents: diff changeset	114 // ------------------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	115 // ciArray::print_impl
a61af66fc99e Initial load duke parents: diff changeset	116 //
a61af66fc99e Initial load duke parents: diff changeset	117 // Implementation of the print method.
a61af66fc99e Initial load duke parents: diff changeset	118 void ciArray::print_impl(outputStream* st) {
a61af66fc99e Initial load duke parents: diff changeset	119 st->print(" length=%d type=", length());
a61af66fc99e Initial load duke parents: diff changeset	120 klass()->print(st);
a61af66fc99e Initial load duke parents: diff changeset	121 }

Mercurial > hg > truffle

annotate src/share/vm/ci/ciArray.cpp @ 14518:d8041d695d19