Mercurial > hg > graal-compiler
view src/share/vm/interpreter/bytecode.hpp @ 2254:ab42c7e1cf83
7017746: Regression : C2 compiler crash due to SIGSEGV in PhaseCFG::schedule_early()
Summary: Add TEMP edges (and KILL projections) before duplicated operands are removed in Expand() methods.
Reviewed-by: never
author | kvn |
---|---|
date | Thu, 10 Feb 2011 14:25:59 -0800 |
parents | 3582bf76420e |
children | b92c45f2bc75 |
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/* * Copyright (c) 1997, 2011, 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. * */ #ifndef SHARE_VM_INTERPRETER_BYTECODE_HPP #define SHARE_VM_INTERPRETER_BYTECODE_HPP #include "interpreter/bytecodes.hpp" #include "memory/allocation.hpp" #include "oops/methodOop.hpp" #ifdef TARGET_ARCH_x86 # include "bytes_x86.hpp" #endif #ifdef TARGET_ARCH_sparc # include "bytes_sparc.hpp" #endif #ifdef TARGET_ARCH_zero # include "bytes_zero.hpp" #endif class ciBytecodeStream; // The base class for different kinds of bytecode abstractions. // Provides the primitive operations to manipulate code relative // to the bcp. class Bytecode: public StackObj { protected: const address _bcp; const Bytecodes::Code _code; // Address computation address addr_at (int offset) const { return (address)_bcp + offset; } u_char byte_at(int offset) const { return *addr_at(offset); } address aligned_addr_at (int offset) const { return (address)round_to((intptr_t)addr_at(offset), jintSize); } int aligned_offset (int offset) const { return aligned_addr_at(offset) - addr_at(0); } // Word access: int get_Java_u2_at (int offset) const { return Bytes::get_Java_u2(addr_at(offset)); } int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); } int get_native_u2_at (int offset) const { return Bytes::get_native_u2(addr_at(offset)); } int get_native_u4_at (int offset) const { return Bytes::get_native_u4(addr_at(offset)); } public: Bytecode(methodOop method, address bcp): _bcp(bcp), _code(Bytecodes::code_at(method, addr_at(0))) { assert(method != NULL, "this form requires a valid methodOop"); } // Defined in ciStreams.hpp inline Bytecode(const ciBytecodeStream* stream, address bcp = NULL); // Attributes address bcp() const { return _bcp; } int instruction_size() const { return Bytecodes::length_for_code_at(_code, bcp()); } Bytecodes::Code code() const { return _code; } Bytecodes::Code java_code() const { return Bytecodes::java_code(code()); } // Static functions for parsing bytecodes in place. int get_index_u1(Bytecodes::Code bc) const { assert_same_format_as(bc); assert_index_size(1, bc); return *(jubyte*)addr_at(1); } int get_index_u2(Bytecodes::Code bc, bool is_wide = false) const { assert_same_format_as(bc, is_wide); assert_index_size(2, bc, is_wide); address p = addr_at(is_wide ? 2 : 1); if (can_use_native_byte_order(bc, is_wide)) return Bytes::get_native_u2(p); else return Bytes::get_Java_u2(p); } int get_index_u1_cpcache(Bytecodes::Code bc) const { assert_same_format_as(bc); assert_index_size(1, bc); return *(jubyte*)addr_at(1) + constantPoolOopDesc::CPCACHE_INDEX_TAG; } int get_index_u2_cpcache(Bytecodes::Code bc) const { assert_same_format_as(bc); assert_index_size(2, bc); assert_native_index(bc); return Bytes::get_native_u2(addr_at(1)) + constantPoolOopDesc::CPCACHE_INDEX_TAG; } int get_index_u4(Bytecodes::Code bc) const { assert_same_format_as(bc); assert_index_size(4, bc); assert(can_use_native_byte_order(bc), ""); return Bytes::get_native_u4(addr_at(1)); } bool has_index_u4(Bytecodes::Code bc) const { return bc == Bytecodes::_invokedynamic; } int get_offset_s2(Bytecodes::Code bc) const { assert_same_format_as(bc); assert_offset_size(2, bc); return (jshort) Bytes::get_Java_u2(addr_at(1)); } int get_offset_s4(Bytecodes::Code bc) const { assert_same_format_as(bc); assert_offset_size(4, bc); return (jint) Bytes::get_Java_u4(addr_at(1)); } int get_constant_u1(int offset, Bytecodes::Code bc) const { assert_same_format_as(bc); assert_constant_size(1, offset, bc); return *(jbyte*)addr_at(offset); } int get_constant_u2(int offset, Bytecodes::Code bc, bool is_wide = false) const { assert_same_format_as(bc, is_wide); assert_constant_size(2, offset, bc, is_wide); return (jshort) Bytes::get_Java_u2(addr_at(offset)); } // These are used locally and also from bytecode streams. void assert_same_format_as(Bytecodes::Code testbc, bool is_wide = false) const NOT_DEBUG_RETURN; static void assert_index_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; static void assert_offset_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; static void assert_constant_size(int required_size, int where, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; static void assert_native_index(Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; static bool can_use_native_byte_order(Bytecodes::Code bc, bool is_wide = false) { return (!Bytes::is_Java_byte_ordering_different() || Bytecodes::native_byte_order(bc /*, is_wide*/)); } }; // Abstractions for lookupswitch bytecode class LookupswitchPair VALUE_OBJ_CLASS_SPEC { private: const address _bcp; address addr_at (int offset) const { return _bcp + offset; } int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); } public: LookupswitchPair(address bcp): _bcp(bcp) {} int match() const { return get_Java_u4_at(0 * jintSize); } int offset() const { return get_Java_u4_at(1 * jintSize); } }; class Bytecode_lookupswitch: public Bytecode { public: Bytecode_lookupswitch(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } // Defined in ciStreams.hpp inline Bytecode_lookupswitch(const ciBytecodeStream* stream); void verify() const PRODUCT_RETURN; // Attributes int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); } int number_of_pairs() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); } LookupswitchPair pair_at(int i) const { assert(0 <= i && i < number_of_pairs(), "pair index out of bounds"); return LookupswitchPair(aligned_addr_at(1 + (1 + i)*2*jintSize)); } }; class Bytecode_tableswitch: public Bytecode { public: Bytecode_tableswitch(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } // Defined in ciStreams.hpp inline Bytecode_tableswitch(const ciBytecodeStream* stream); void verify() const PRODUCT_RETURN; // Attributes int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); } int low_key() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); } int high_key() const { return get_Java_u4_at(aligned_offset(1 + 2*jintSize)); } int dest_offset_at(int i) const; int length() { return high_key()-low_key()+1; } }; // Common code for decoding invokes and field references. class Bytecode_member_ref: public Bytecode { protected: const methodHandle _method; // method containing the bytecode Bytecode_member_ref(methodHandle method, int bci) : Bytecode(method(), method()->bcp_from(bci)), _method(method) {} methodHandle method() const { return _method; } public: int index() const; // cache index (loaded from instruction) int pool_index() const; // constant pool index Symbol* name() const; // returns the name of the method or field Symbol* signature() const; // returns the signature of the method or field BasicType result_type() const; // returns the result type of the getfield or invoke }; // Abstraction for invoke_{virtual, static, interface, special} class Bytecode_invoke: public Bytecode_member_ref { protected: // Constructor that skips verification Bytecode_invoke(methodHandle method, int bci, bool unused) : Bytecode_member_ref(method, bci) {} public: Bytecode_invoke(methodHandle method, int bci) : Bytecode_member_ref(method, bci) { verify(); } void verify() const; // Attributes methodHandle static_target(TRAPS); // "specified" method (from constant pool) // Testers bool is_invokeinterface() const { return java_code() == Bytecodes::_invokeinterface; } bool is_invokevirtual() const { return java_code() == Bytecodes::_invokevirtual; } bool is_invokestatic() const { return java_code() == Bytecodes::_invokestatic; } bool is_invokespecial() const { return java_code() == Bytecodes::_invokespecial; } bool is_invokedynamic() const { return java_code() == Bytecodes::_invokedynamic; } bool has_receiver() const { return !is_invokestatic() && !is_invokedynamic(); } bool is_valid() const { return is_invokeinterface() || is_invokevirtual() || is_invokestatic() || is_invokespecial() || is_invokedynamic(); } // Helper to skip verification. Used is_valid() to check if the result is really an invoke inline friend Bytecode_invoke Bytecode_invoke_check(methodHandle method, int bci); }; inline Bytecode_invoke Bytecode_invoke_check(methodHandle method, int bci) { return Bytecode_invoke(method, bci, false); } // Abstraction for all field accesses (put/get field/static) class Bytecode_field: public Bytecode_member_ref { public: Bytecode_field(methodHandle method, int bci) : Bytecode_member_ref(method, bci) { verify(); } // Testers bool is_getfield() const { return java_code() == Bytecodes::_getfield; } bool is_putfield() const { return java_code() == Bytecodes::_putfield; } bool is_getstatic() const { return java_code() == Bytecodes::_getstatic; } bool is_putstatic() const { return java_code() == Bytecodes::_putstatic; } bool is_getter() const { return is_getfield() || is_getstatic(); } bool is_static() const { return is_getstatic() || is_putstatic(); } bool is_valid() const { return is_getfield() || is_putfield() || is_getstatic() || is_putstatic(); } void verify() const; }; // Abstraction for checkcast class Bytecode_checkcast: public Bytecode { public: Bytecode_checkcast(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } void verify() const { assert(Bytecodes::java_code(code()) == Bytecodes::_checkcast, "check checkcast"); } // Returns index long index() const { return get_index_u2(Bytecodes::_checkcast); }; }; // Abstraction for instanceof class Bytecode_instanceof: public Bytecode { public: Bytecode_instanceof(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } void verify() const { assert(code() == Bytecodes::_instanceof, "check instanceof"); } // Returns index long index() const { return get_index_u2(Bytecodes::_instanceof); }; }; class Bytecode_new: public Bytecode { public: Bytecode_new(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } void verify() const { assert(java_code() == Bytecodes::_new, "check new"); } // Returns index long index() const { return get_index_u2(Bytecodes::_new); }; }; class Bytecode_multianewarray: public Bytecode { public: Bytecode_multianewarray(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } void verify() const { assert(java_code() == Bytecodes::_multianewarray, "check new"); } // Returns index long index() const { return get_index_u2(Bytecodes::_multianewarray); }; }; class Bytecode_anewarray: public Bytecode { public: Bytecode_anewarray(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } void verify() const { assert(java_code() == Bytecodes::_anewarray, "check anewarray"); } // Returns index long index() const { return get_index_u2(Bytecodes::_anewarray); }; }; // Abstraction for ldc, ldc_w and ldc2_w class Bytecode_loadconstant: public Bytecode { private: const methodHandle _method; int raw_index() const; public: Bytecode_loadconstant(methodHandle method, int bci): Bytecode(method(), method->bcp_from(bci)), _method(method) { verify(); } void verify() const { assert(_method.not_null(), "must supply method"); Bytecodes::Code stdc = Bytecodes::java_code(code()); assert(stdc == Bytecodes::_ldc || stdc == Bytecodes::_ldc_w || stdc == Bytecodes::_ldc2_w, "load constant"); } // Only non-standard bytecodes (fast_aldc) have CP cache indexes. bool has_cache_index() const { return code() >= Bytecodes::number_of_java_codes; } int pool_index() const; // index into constant pool int cache_index() const { // index into CP cache (or -1 if none) return has_cache_index() ? raw_index() : -1; } BasicType result_type() const; // returns the result type of the ldc oop resolve_constant(TRAPS) const; }; #endif // SHARE_VM_INTERPRETER_BYTECODE_HPP