Java example source code file (sharkBlock.cpp)
The sharkBlock.cpp Java example source code/*
* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright 2008, 2009, 2010 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 "precompiled.hpp"
#include "interpreter/bytecodes.hpp"
#include "shark/llvmHeaders.hpp"
#include "shark/llvmValue.hpp"
#include "shark/sharkBlock.hpp"
#include "shark/sharkBuilder.hpp"
#include "shark/sharkConstant.hpp"
#include "shark/sharkState.hpp"
#include "shark/sharkValue.hpp"
#include "shark/shark_globals.hpp"
#include "utilities/debug.hpp"
using namespace llvm;
void SharkBlock::parse_bytecode(int start, int limit) {
SharkValue *a, *b, *c, *d;
int i;
// Ensure the current state is initialized before we emit any code,
// so that any setup code for the state is at the start of the block
current_state();
// Parse the bytecodes
iter()->reset_to_bci(start);
while (iter()->next_bci() < limit) {
NOT_PRODUCT(a = b = c = d = NULL);
iter()->next();
if (SharkTraceBytecodes)
tty->print_cr("%4d: %s", bci(), Bytecodes::name(bc()));
if (has_trap() && trap_bci() == bci()) {
do_trap(trap_request());
return;
}
if (UseLoopSafepoints) {
// XXX if a lcmp is followed by an if_?? then C2 maybe-inserts
// the safepoint before the lcmp rather than before the if.
// Maybe we should do this too. See parse2.cpp for details.
switch (bc()) {
case Bytecodes::_goto:
case Bytecodes::_ifnull:
case Bytecodes::_ifnonnull:
case Bytecodes::_if_acmpeq:
case Bytecodes::_if_acmpne:
case Bytecodes::_ifeq:
case Bytecodes::_ifne:
case Bytecodes::_iflt:
case Bytecodes::_ifle:
case Bytecodes::_ifgt:
case Bytecodes::_ifge:
case Bytecodes::_if_icmpeq:
case Bytecodes::_if_icmpne:
case Bytecodes::_if_icmplt:
case Bytecodes::_if_icmple:
case Bytecodes::_if_icmpgt:
case Bytecodes::_if_icmpge:
if (iter()->get_dest() <= bci())
maybe_add_backedge_safepoint();
break;
case Bytecodes::_goto_w:
if (iter()->get_far_dest() <= bci())
maybe_add_backedge_safepoint();
break;
case Bytecodes::_tableswitch:
case Bytecodes::_lookupswitch:
if (switch_default_dest() <= bci()) {
maybe_add_backedge_safepoint();
break;
}
int len = switch_table_length();
for (int i = 0; i < len; i++) {
if (switch_dest(i) <= bci()) {
maybe_add_backedge_safepoint();
break;
}
}
break;
}
}
switch (bc()) {
case Bytecodes::_nop:
break;
case Bytecodes::_aconst_null:
push(SharkValue::null());
break;
case Bytecodes::_iconst_m1:
push(SharkValue::jint_constant(-1));
break;
case Bytecodes::_iconst_0:
push(SharkValue::jint_constant(0));
break;
case Bytecodes::_iconst_1:
push(SharkValue::jint_constant(1));
break;
case Bytecodes::_iconst_2:
push(SharkValue::jint_constant(2));
break;
case Bytecodes::_iconst_3:
push(SharkValue::jint_constant(3));
break;
case Bytecodes::_iconst_4:
push(SharkValue::jint_constant(4));
break;
case Bytecodes::_iconst_5:
push(SharkValue::jint_constant(5));
break;
case Bytecodes::_lconst_0:
push(SharkValue::jlong_constant(0));
break;
case Bytecodes::_lconst_1:
push(SharkValue::jlong_constant(1));
break;
case Bytecodes::_fconst_0:
push(SharkValue::jfloat_constant(0));
break;
case Bytecodes::_fconst_1:
push(SharkValue::jfloat_constant(1));
break;
case Bytecodes::_fconst_2:
push(SharkValue::jfloat_constant(2));
break;
case Bytecodes::_dconst_0:
push(SharkValue::jdouble_constant(0));
break;
case Bytecodes::_dconst_1:
push(SharkValue::jdouble_constant(1));
break;
case Bytecodes::_bipush:
push(SharkValue::jint_constant(iter()->get_constant_u1()));
break;
case Bytecodes::_sipush:
push(SharkValue::jint_constant(iter()->get_constant_u2()));
break;
case Bytecodes::_ldc:
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w: {
SharkConstant* constant = SharkConstant::for_ldc(iter());
assert(constant->is_loaded(), "trap should handle unloaded classes");
push(constant->value(builder()));
break;
}
case Bytecodes::_iload_0:
case Bytecodes::_lload_0:
case Bytecodes::_fload_0:
case Bytecodes::_dload_0:
case Bytecodes::_aload_0:
push(local(0));
break;
case Bytecodes::_iload_1:
case Bytecodes::_lload_1:
case Bytecodes::_fload_1:
case Bytecodes::_dload_1:
case Bytecodes::_aload_1:
push(local(1));
break;
case Bytecodes::_iload_2:
case Bytecodes::_lload_2:
case Bytecodes::_fload_2:
case Bytecodes::_dload_2:
case Bytecodes::_aload_2:
push(local(2));
break;
case Bytecodes::_iload_3:
case Bytecodes::_lload_3:
case Bytecodes::_fload_3:
case Bytecodes::_dload_3:
case Bytecodes::_aload_3:
push(local(3));
break;
case Bytecodes::_iload:
case Bytecodes::_lload:
case Bytecodes::_fload:
case Bytecodes::_dload:
case Bytecodes::_aload:
push(local(iter()->get_index()));
break;
case Bytecodes::_baload:
do_aload(T_BYTE);
break;
case Bytecodes::_caload:
do_aload(T_CHAR);
break;
case Bytecodes::_saload:
do_aload(T_SHORT);
break;
case Bytecodes::_iaload:
do_aload(T_INT);
break;
case Bytecodes::_laload:
do_aload(T_LONG);
break;
case Bytecodes::_faload:
do_aload(T_FLOAT);
break;
case Bytecodes::_daload:
do_aload(T_DOUBLE);
break;
case Bytecodes::_aaload:
do_aload(T_OBJECT);
break;
case Bytecodes::_istore_0:
case Bytecodes::_lstore_0:
case Bytecodes::_fstore_0:
case Bytecodes::_dstore_0:
case Bytecodes::_astore_0:
set_local(0, pop());
break;
case Bytecodes::_istore_1:
case Bytecodes::_lstore_1:
case Bytecodes::_fstore_1:
case Bytecodes::_dstore_1:
case Bytecodes::_astore_1:
set_local(1, pop());
break;
case Bytecodes::_istore_2:
case Bytecodes::_lstore_2:
case Bytecodes::_fstore_2:
case Bytecodes::_dstore_2:
case Bytecodes::_astore_2:
set_local(2, pop());
break;
case Bytecodes::_istore_3:
case Bytecodes::_lstore_3:
case Bytecodes::_fstore_3:
case Bytecodes::_dstore_3:
case Bytecodes::_astore_3:
set_local(3, pop());
break;
case Bytecodes::_istore:
case Bytecodes::_lstore:
case Bytecodes::_fstore:
case Bytecodes::_dstore:
case Bytecodes::_astore:
set_local(iter()->get_index(), pop());
break;
case Bytecodes::_bastore:
do_astore(T_BYTE);
break;
case Bytecodes::_castore:
do_astore(T_CHAR);
break;
case Bytecodes::_sastore:
do_astore(T_SHORT);
break;
case Bytecodes::_iastore:
do_astore(T_INT);
break;
case Bytecodes::_lastore:
do_astore(T_LONG);
break;
case Bytecodes::_fastore:
do_astore(T_FLOAT);
break;
case Bytecodes::_dastore:
do_astore(T_DOUBLE);
break;
case Bytecodes::_aastore:
do_astore(T_OBJECT);
break;
case Bytecodes::_pop:
xpop();
break;
case Bytecodes::_pop2:
xpop();
xpop();
break;
case Bytecodes::_swap:
a = xpop();
b = xpop();
xpush(a);
xpush(b);
break;
case Bytecodes::_dup:
a = xpop();
xpush(a);
xpush(a);
break;
case Bytecodes::_dup_x1:
a = xpop();
b = xpop();
xpush(a);
xpush(b);
xpush(a);
break;
case Bytecodes::_dup_x2:
a = xpop();
b = xpop();
c = xpop();
xpush(a);
xpush(c);
xpush(b);
xpush(a);
break;
case Bytecodes::_dup2:
a = xpop();
b = xpop();
xpush(b);
xpush(a);
xpush(b);
xpush(a);
break;
case Bytecodes::_dup2_x1:
a = xpop();
b = xpop();
c = xpop();
xpush(b);
xpush(a);
xpush(c);
xpush(b);
xpush(a);
break;
case Bytecodes::_dup2_x2:
a = xpop();
b = xpop();
c = xpop();
d = xpop();
xpush(b);
xpush(a);
xpush(d);
xpush(c);
xpush(b);
xpush(a);
break;
case Bytecodes::_arraylength:
do_arraylength();
break;
case Bytecodes::_getfield:
do_getfield();
break;
case Bytecodes::_getstatic:
do_getstatic();
break;
case Bytecodes::_putfield:
do_putfield();
break;
case Bytecodes::_putstatic:
do_putstatic();
break;
case Bytecodes::_iadd:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateAdd(a->jint_value(), b->jint_value()), false));
break;
case Bytecodes::_isub:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateSub(a->jint_value(), b->jint_value()), false));
break;
case Bytecodes::_imul:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateMul(a->jint_value(), b->jint_value()), false));
break;
case Bytecodes::_idiv:
do_idiv();
break;
case Bytecodes::_irem:
do_irem();
break;
case Bytecodes::_ineg:
a = pop();
push(SharkValue::create_jint(
builder()->CreateNeg(a->jint_value()), a->zero_checked()));
break;
case Bytecodes::_ishl:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateShl(
a->jint_value(),
builder()->CreateAnd(
b->jint_value(), LLVMValue::jint_constant(0x1f))), false));
break;
case Bytecodes::_ishr:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateAShr(
a->jint_value(),
builder()->CreateAnd(
b->jint_value(), LLVMValue::jint_constant(0x1f))), false));
break;
case Bytecodes::_iushr:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateLShr(
a->jint_value(),
builder()->CreateAnd(
b->jint_value(), LLVMValue::jint_constant(0x1f))), false));
break;
case Bytecodes::_iand:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateAnd(a->jint_value(), b->jint_value()), false));
break;
case Bytecodes::_ior:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateOr(a->jint_value(), b->jint_value()),
a->zero_checked() && b->zero_checked()));
break;
case Bytecodes::_ixor:
b = pop();
a = pop();
push(SharkValue::create_jint(
builder()->CreateXor(a->jint_value(), b->jint_value()), false));
break;
case Bytecodes::_ladd:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateAdd(a->jlong_value(), b->jlong_value()), false));
break;
case Bytecodes::_lsub:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateSub(a->jlong_value(), b->jlong_value()), false));
break;
case Bytecodes::_lmul:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateMul(a->jlong_value(), b->jlong_value()), false));
break;
case Bytecodes::_ldiv:
do_ldiv();
break;
case Bytecodes::_lrem:
do_lrem();
break;
case Bytecodes::_lneg:
a = pop();
push(SharkValue::create_jlong(
builder()->CreateNeg(a->jlong_value()), a->zero_checked()));
break;
case Bytecodes::_lshl:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateShl(
a->jlong_value(),
builder()->CreateIntCast(
builder()->CreateAnd(
b->jint_value(), LLVMValue::jint_constant(0x3f)),
SharkType::jlong_type(), true)), false));
break;
case Bytecodes::_lshr:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateAShr(
a->jlong_value(),
builder()->CreateIntCast(
builder()->CreateAnd(
b->jint_value(), LLVMValue::jint_constant(0x3f)),
SharkType::jlong_type(), true)), false));
break;
case Bytecodes::_lushr:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateLShr(
a->jlong_value(),
builder()->CreateIntCast(
builder()->CreateAnd(
b->jint_value(), LLVMValue::jint_constant(0x3f)),
SharkType::jlong_type(), true)), false));
break;
case Bytecodes::_land:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateAnd(a->jlong_value(), b->jlong_value()), false));
break;
case Bytecodes::_lor:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateOr(a->jlong_value(), b->jlong_value()),
a->zero_checked() && b->zero_checked()));
break;
case Bytecodes::_lxor:
b = pop();
a = pop();
push(SharkValue::create_jlong(
builder()->CreateXor(a->jlong_value(), b->jlong_value()), false));
break;
case Bytecodes::_fadd:
b = pop();
a = pop();
push(SharkValue::create_jfloat(
builder()->CreateFAdd(a->jfloat_value(), b->jfloat_value())));
break;
case Bytecodes::_fsub:
b = pop();
a = pop();
push(SharkValue::create_jfloat(
builder()->CreateFSub(a->jfloat_value(), b->jfloat_value())));
break;
case Bytecodes::_fmul:
b = pop();
a = pop();
push(SharkValue::create_jfloat(
builder()->CreateFMul(a->jfloat_value(), b->jfloat_value())));
break;
case Bytecodes::_fdiv:
b = pop();
a = pop();
push(SharkValue::create_jfloat(
builder()->CreateFDiv(a->jfloat_value(), b->jfloat_value())));
break;
case Bytecodes::_frem:
b = pop();
a = pop();
push(SharkValue::create_jfloat(
builder()->CreateFRem(a->jfloat_value(), b->jfloat_value())));
break;
case Bytecodes::_fneg:
a = pop();
push(SharkValue::create_jfloat(
builder()->CreateFNeg(a->jfloat_value())));
break;
case Bytecodes::_dadd:
b = pop();
a = pop();
push(SharkValue::create_jdouble(
builder()->CreateFAdd(a->jdouble_value(), b->jdouble_value())));
break;
case Bytecodes::_dsub:
b = pop();
a = pop();
push(SharkValue::create_jdouble(
builder()->CreateFSub(a->jdouble_value(), b->jdouble_value())));
break;
case Bytecodes::_dmul:
b = pop();
a = pop();
push(SharkValue::create_jdouble(
builder()->CreateFMul(a->jdouble_value(), b->jdouble_value())));
break;
case Bytecodes::_ddiv:
b = pop();
a = pop();
push(SharkValue::create_jdouble(
builder()->CreateFDiv(a->jdouble_value(), b->jdouble_value())));
break;
case Bytecodes::_drem:
b = pop();
a = pop();
push(SharkValue::create_jdouble(
builder()->CreateFRem(a->jdouble_value(), b->jdouble_value())));
break;
case Bytecodes::_dneg:
a = pop();
push(SharkValue::create_jdouble(
builder()->CreateFNeg(a->jdouble_value())));
break;
case Bytecodes::_iinc:
i = iter()->get_index();
set_local(
i,
SharkValue::create_jint(
builder()->CreateAdd(
LLVMValue::jint_constant(iter()->get_iinc_con()),
local(i)->jint_value()), false));
break;
case Bytecodes::_lcmp:
do_lcmp();
break;
case Bytecodes::_fcmpl:
do_fcmp(false, false);
break;
case Bytecodes::_fcmpg:
do_fcmp(false, true);
break;
case Bytecodes::_dcmpl:
do_fcmp(true, false);
break;
case Bytecodes::_dcmpg:
do_fcmp(true, true);
break;
case Bytecodes::_i2l:
a = pop();
push(SharkValue::create_jlong(
builder()->CreateIntCast(
a->jint_value(), SharkType::jlong_type(), true), a->zero_checked()));
break;
case Bytecodes::_i2f:
push(SharkValue::create_jfloat(
builder()->CreateSIToFP(
pop()->jint_value(), SharkType::jfloat_type())));
break;
case Bytecodes::_i2d:
push(SharkValue::create_jdouble(
builder()->CreateSIToFP(
pop()->jint_value(), SharkType::jdouble_type())));
break;
case Bytecodes::_l2i:
push(SharkValue::create_jint(
builder()->CreateIntCast(
pop()->jlong_value(), SharkType::jint_type(), true), false));
break;
case Bytecodes::_l2f:
push(SharkValue::create_jfloat(
builder()->CreateSIToFP(
pop()->jlong_value(), SharkType::jfloat_type())));
break;
case Bytecodes::_l2d:
push(SharkValue::create_jdouble(
builder()->CreateSIToFP(
pop()->jlong_value(), SharkType::jdouble_type())));
break;
case Bytecodes::_f2i:
push(SharkValue::create_jint(
builder()->CreateCall(
builder()->f2i(), pop()->jfloat_value()), false));
break;
case Bytecodes::_f2l:
push(SharkValue::create_jlong(
builder()->CreateCall(
builder()->f2l(), pop()->jfloat_value()), false));
break;
case Bytecodes::_f2d:
push(SharkValue::create_jdouble(
builder()->CreateFPExt(
pop()->jfloat_value(), SharkType::jdouble_type())));
break;
case Bytecodes::_d2i:
push(SharkValue::create_jint(
builder()->CreateCall(
builder()->d2i(), pop()->jdouble_value()), false));
break;
case Bytecodes::_d2l:
push(SharkValue::create_jlong(
builder()->CreateCall(
builder()->d2l(), pop()->jdouble_value()), false));
break;
case Bytecodes::_d2f:
push(SharkValue::create_jfloat(
builder()->CreateFPTrunc(
pop()->jdouble_value(), SharkType::jfloat_type())));
break;
case Bytecodes::_i2b:
push(SharkValue::create_jint(
builder()->CreateAShr(
builder()->CreateShl(
pop()->jint_value(),
LLVMValue::jint_constant(24)),
LLVMValue::jint_constant(24)), false));
break;
case Bytecodes::_i2c:
push(SharkValue::create_jint(
builder()->CreateAnd(
pop()->jint_value(),
LLVMValue::jint_constant(0xffff)), false));
break;
case Bytecodes::_i2s:
push(SharkValue::create_jint(
builder()->CreateAShr(
builder()->CreateShl(
pop()->jint_value(),
LLVMValue::jint_constant(16)),
LLVMValue::jint_constant(16)), false));
break;
case Bytecodes::_return:
do_return(T_VOID);
break;
case Bytecodes::_ireturn:
do_return(T_INT);
break;
case Bytecodes::_lreturn:
do_return(T_LONG);
break;
case Bytecodes::_freturn:
do_return(T_FLOAT);
break;
case Bytecodes::_dreturn:
do_return(T_DOUBLE);
break;
case Bytecodes::_areturn:
do_return(T_OBJECT);
break;
case Bytecodes::_athrow:
do_athrow();
break;
case Bytecodes::_goto:
case Bytecodes::_goto_w:
do_goto();
break;
case Bytecodes::_jsr:
case Bytecodes::_jsr_w:
do_jsr();
break;
case Bytecodes::_ret:
do_ret();
break;
case Bytecodes::_ifnull:
do_if(ICmpInst::ICMP_EQ, SharkValue::null(), pop());
break;
case Bytecodes::_ifnonnull:
do_if(ICmpInst::ICMP_NE, SharkValue::null(), pop());
break;
case Bytecodes::_if_acmpeq:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_EQ, b, a);
break;
case Bytecodes::_if_acmpne:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_NE, b, a);
break;
case Bytecodes::_ifeq:
do_if(ICmpInst::ICMP_EQ, SharkValue::jint_constant(0), pop());
break;
case Bytecodes::_ifne:
do_if(ICmpInst::ICMP_NE, SharkValue::jint_constant(0), pop());
break;
case Bytecodes::_iflt:
do_if(ICmpInst::ICMP_SLT, SharkValue::jint_constant(0), pop());
break;
case Bytecodes::_ifle:
do_if(ICmpInst::ICMP_SLE, SharkValue::jint_constant(0), pop());
break;
case Bytecodes::_ifgt:
do_if(ICmpInst::ICMP_SGT, SharkValue::jint_constant(0), pop());
break;
case Bytecodes::_ifge:
do_if(ICmpInst::ICMP_SGE, SharkValue::jint_constant(0), pop());
break;
case Bytecodes::_if_icmpeq:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_EQ, b, a);
break;
case Bytecodes::_if_icmpne:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_NE, b, a);
break;
case Bytecodes::_if_icmplt:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_SLT, b, a);
break;
case Bytecodes::_if_icmple:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_SLE, b, a);
break;
case Bytecodes::_if_icmpgt:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_SGT, b, a);
break;
case Bytecodes::_if_icmpge:
b = pop();
a = pop();
do_if(ICmpInst::ICMP_SGE, b, a);
break;
case Bytecodes::_tableswitch:
case Bytecodes::_lookupswitch:
do_switch();
break;
case Bytecodes::_invokestatic:
case Bytecodes::_invokespecial:
case Bytecodes::_invokevirtual:
case Bytecodes::_invokeinterface:
do_call();
break;
case Bytecodes::_instanceof:
// This is a very common construct:
//
// if (object instanceof Klass) {
// something = (Klass) object;
// ...
// }
//
// which gets compiled to something like this:
//
// 28: aload 9
// 30: instanceof <Class Klass>
// 33: ifeq 52
// 36: aload 9
// 38: checkcast <Class Klass>
//
// Handling both bytecodes at once allows us
// to eliminate the checkcast.
if (iter()->next_bci() < limit &&
(iter()->next_bc() == Bytecodes::_ifeq ||
iter()->next_bc() == Bytecodes::_ifne) &&
(!UseLoopSafepoints ||
iter()->next_get_dest() > iter()->next_bci())) {
if (maybe_do_instanceof_if()) {
iter()->next();
if (SharkTraceBytecodes)
tty->print_cr("%4d: %s", bci(), Bytecodes::name(bc()));
break;
}
}
// fall through
case Bytecodes::_checkcast:
do_instance_check();
break;
case Bytecodes::_new:
do_new();
break;
case Bytecodes::_newarray:
do_newarray();
break;
case Bytecodes::_anewarray:
do_anewarray();
break;
case Bytecodes::_multianewarray:
do_multianewarray();
break;
case Bytecodes::_monitorenter:
do_monitorenter();
break;
case Bytecodes::_monitorexit:
do_monitorexit();
break;
default:
ShouldNotReachHere();
}
}
}
SharkState* SharkBlock::initial_current_state() {
return entry_state()->copy();
}
int SharkBlock::switch_default_dest() {
return iter()->get_dest_table(0);
}
int SharkBlock::switch_table_length() {
switch(bc()) {
case Bytecodes::_tableswitch:
return iter()->get_int_table(2) - iter()->get_int_table(1) + 1;
case Bytecodes::_lookupswitch:
return iter()->get_int_table(1);
default:
ShouldNotReachHere();
}
}
int SharkBlock::switch_key(int i) {
switch(bc()) {
case Bytecodes::_tableswitch:
return iter()->get_int_table(1) + i;
case Bytecodes::_lookupswitch:
return iter()->get_int_table(2 + 2 * i);
default:
ShouldNotReachHere();
}
}
int SharkBlock::switch_dest(int i) {
switch(bc()) {
case Bytecodes::_tableswitch:
return iter()->get_dest_table(i + 3);
case Bytecodes::_lookupswitch:
return iter()->get_dest_table(2 + 2 * i + 1);
default:
ShouldNotReachHere();
}
}
void SharkBlock::do_div_or_rem(bool is_long, bool is_rem) {
SharkValue *sb = pop();
SharkValue *sa = pop();
check_divide_by_zero(sb);
Value *a, *b, *p, *q;
if (is_long) {
a = sa->jlong_value();
b = sb->jlong_value();
p = LLVMValue::jlong_constant(0x8000000000000000LL);
q = LLVMValue::jlong_constant(-1);
}
else {
a = sa->jint_value();
b = sb->jint_value();
p = LLVMValue::jint_constant(0x80000000);
q = LLVMValue::jint_constant(-1);
}
BasicBlock *ip = builder()->GetBlockInsertionPoint();
BasicBlock *special_case = builder()->CreateBlock(ip, "special_case");
BasicBlock *general_case = builder()->CreateBlock(ip, "general_case");
BasicBlock *done = builder()->CreateBlock(ip, "done");
builder()->CreateCondBr(
builder()->CreateAnd(
builder()->CreateICmpEQ(a, p),
builder()->CreateICmpEQ(b, q)),
special_case, general_case);
builder()->SetInsertPoint(special_case);
Value *special_result;
if (is_rem) {
if (is_long)
special_result = LLVMValue::jlong_constant(0);
else
special_result = LLVMValue::jint_constant(0);
}
else {
special_result = a;
}
builder()->CreateBr(done);
builder()->SetInsertPoint(general_case);
Value *general_result;
if (is_rem)
general_result = builder()->CreateSRem(a, b);
else
general_result = builder()->CreateSDiv(a, b);
builder()->CreateBr(done);
builder()->SetInsertPoint(done);
PHINode *result;
if (is_long)
result = builder()->CreatePHI(SharkType::jlong_type(), 0, "result");
else
result = builder()->CreatePHI(SharkType::jint_type(), 0, "result");
result->addIncoming(special_result, special_case);
result->addIncoming(general_result, general_case);
if (is_long)
push(SharkValue::create_jlong(result, false));
else
push(SharkValue::create_jint(result, false));
}
void SharkBlock::do_field_access(bool is_get, bool is_field) {
bool will_link;
ciField *field = iter()->get_field(will_link);
assert(will_link, "typeflow responsibility");
assert(is_field != field->is_static(), "mismatch");
// Pop the value off the stack where necessary
SharkValue *value = NULL;
if (!is_get)
value = pop();
// Find the object we're accessing, if necessary
Value *object = NULL;
if (is_field) {
SharkValue *value = pop();
check_null(value);
object = value->generic_value();
}
if (is_get && field->is_constant() && field->is_static()) {
SharkConstant *constant = SharkConstant::for_field(iter());
if (constant->is_loaded())
value = constant->value(builder());
}
if (!is_get || value == NULL) {
if (!is_field) {
object = builder()->CreateInlineOop(field->holder()->java_mirror());
}
BasicType basic_type = field->type()->basic_type();
Type *stack_type = SharkType::to_stackType(basic_type);
Type *field_type = SharkType::to_arrayType(basic_type);
Type *type = field_type;
if (field->is_volatile()) {
if (field_type == SharkType::jfloat_type()) {
type = SharkType::jint_type();
} else if (field_type == SharkType::jdouble_type()) {
type = SharkType::jlong_type();
}
}
Value *addr = builder()->CreateAddressOfStructEntry(
object, in_ByteSize(field->offset_in_bytes()),
PointerType::getUnqual(type),
"addr");
// Do the access
if (is_get) {
Value* field_value;
if (field->is_volatile()) {
field_value = builder()->CreateAtomicLoad(addr);
field_value = builder()->CreateBitCast(field_value, field_type);
} else {
field_value = builder()->CreateLoad(addr);
}
if (field_type != stack_type) {
field_value = builder()->CreateIntCast(
field_value, stack_type, basic_type != T_CHAR);
}
value = SharkValue::create_generic(field->type(), field_value, false);
}
else {
Value *field_value = value->generic_value();
if (field_type != stack_type) {
field_value = builder()->CreateIntCast(
field_value, field_type, basic_type != T_CHAR);
}
if (field->is_volatile()) {
field_value = builder()->CreateBitCast(field_value, type);
builder()->CreateAtomicStore(field_value, addr);
} else {
builder()->CreateStore(field_value, addr);
}
if (!field->type()->is_primitive_type()) {
builder()->CreateUpdateBarrierSet(oopDesc::bs(), addr);
}
}
}
// Push the value onto the stack where necessary
if (is_get)
push(value);
}
void SharkBlock::do_lcmp() {
Value *b = pop()->jlong_value();
Value *a = pop()->jlong_value();
BasicBlock *ip = builder()->GetBlockInsertionPoint();
BasicBlock *ne = builder()->CreateBlock(ip, "lcmp_ne");
BasicBlock *lt = builder()->CreateBlock(ip, "lcmp_lt");
BasicBlock *gt = builder()->CreateBlock(ip, "lcmp_gt");
BasicBlock *done = builder()->CreateBlock(ip, "done");
BasicBlock *eq = builder()->GetInsertBlock();
builder()->CreateCondBr(builder()->CreateICmpEQ(a, b), done, ne);
builder()->SetInsertPoint(ne);
builder()->CreateCondBr(builder()->CreateICmpSLT(a, b), lt, gt);
builder()->SetInsertPoint(lt);
builder()->CreateBr(done);
builder()->SetInsertPoint(gt);
builder()->CreateBr(done);
builder()->SetInsertPoint(done);
PHINode *result = builder()->CreatePHI(SharkType::jint_type(), 0, "result");
result->addIncoming(LLVMValue::jint_constant(-1), lt);
result->addIncoming(LLVMValue::jint_constant(0), eq);
result->addIncoming(LLVMValue::jint_constant(1), gt);
push(SharkValue::create_jint(result, false));
}
void SharkBlock::do_fcmp(bool is_double, bool unordered_is_greater) {
Value *a, *b;
if (is_double) {
b = pop()->jdouble_value();
a = pop()->jdouble_value();
}
else {
b = pop()->jfloat_value();
a = pop()->jfloat_value();
}
BasicBlock *ip = builder()->GetBlockInsertionPoint();
BasicBlock *ordered = builder()->CreateBlock(ip, "ordered");
BasicBlock *ge = builder()->CreateBlock(ip, "fcmp_ge");
BasicBlock *lt = builder()->CreateBlock(ip, "fcmp_lt");
BasicBlock *eq = builder()->CreateBlock(ip, "fcmp_eq");
BasicBlock *gt = builder()->CreateBlock(ip, "fcmp_gt");
BasicBlock *done = builder()->CreateBlock(ip, "done");
builder()->CreateCondBr(
builder()->CreateFCmpUNO(a, b),
unordered_is_greater ? gt : lt, ordered);
builder()->SetInsertPoint(ordered);
builder()->CreateCondBr(builder()->CreateFCmpULT(a, b), lt, ge);
builder()->SetInsertPoint(ge);
builder()->CreateCondBr(builder()->CreateFCmpUGT(a, b), gt, eq);
builder()->SetInsertPoint(lt);
builder()->CreateBr(done);
builder()->SetInsertPoint(gt);
builder()->CreateBr(done);
builder()->SetInsertPoint(eq);
builder()->CreateBr(done);
builder()->SetInsertPoint(done);
PHINode *result = builder()->CreatePHI(SharkType::jint_type(), 0, "result");
result->addIncoming(LLVMValue::jint_constant(-1), lt);
result->addIncoming(LLVMValue::jint_constant(0), eq);
result->addIncoming(LLVMValue::jint_constant(1), gt);
push(SharkValue::create_jint(result, false));
}
void SharkBlock::emit_IR() {
ShouldNotCallThis();
}
SharkState* SharkBlock::entry_state() {
ShouldNotCallThis();
}
void SharkBlock::do_zero_check(SharkValue* value) {
ShouldNotCallThis();
}
void SharkBlock::maybe_add_backedge_safepoint() {
ShouldNotCallThis();
}
bool SharkBlock::has_trap() {
return false;
}
int SharkBlock::trap_request() {
ShouldNotCallThis();
}
int SharkBlock::trap_bci() {
ShouldNotCallThis();
}
void SharkBlock::do_trap(int trap_request) {
ShouldNotCallThis();
}
void SharkBlock::do_arraylength() {
ShouldNotCallThis();
}
void SharkBlock::do_aload(BasicType basic_type) {
ShouldNotCallThis();
}
void SharkBlock::do_astore(BasicType basic_type) {
ShouldNotCallThis();
}
void SharkBlock::do_return(BasicType type) {
ShouldNotCallThis();
}
void SharkBlock::do_athrow() {
ShouldNotCallThis();
}
void SharkBlock::do_goto() {
ShouldNotCallThis();
}
void SharkBlock::do_jsr() {
ShouldNotCallThis();
}
void SharkBlock::do_ret() {
ShouldNotCallThis();
}
void SharkBlock::do_if(ICmpInst::Predicate p, SharkValue* b, SharkValue* a) {
ShouldNotCallThis();
}
void SharkBlock::do_switch() {
ShouldNotCallThis();
}
void SharkBlock::do_call() {
ShouldNotCallThis();
}
void SharkBlock::do_instance_check() {
ShouldNotCallThis();
}
bool SharkBlock::maybe_do_instanceof_if() {
ShouldNotCallThis();
}
void SharkBlock::do_new() {
ShouldNotCallThis();
}
void SharkBlock::do_newarray() {
ShouldNotCallThis();
}
void SharkBlock::do_anewarray() {
ShouldNotCallThis();
}
void SharkBlock::do_multianewarray() {
ShouldNotCallThis();
}
void SharkBlock::do_monitorenter() {
ShouldNotCallThis();
}
void SharkBlock::do_monitorexit() {
ShouldNotCallThis();
}
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