| /* |
| * Copyright (c) 2008, 2015, 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. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "c1/c1_Compilation.hpp" |
| #include "c1/c1_FrameMap.hpp" |
| #include "c1/c1_Instruction.hpp" |
| #include "c1/c1_LIRAssembler.hpp" |
| #include "c1/c1_LIRGenerator.hpp" |
| #include "c1/c1_Runtime1.hpp" |
| #include "c1/c1_ValueStack.hpp" |
| #include "ci/ciArray.hpp" |
| #include "ci/ciObjArrayKlass.hpp" |
| #include "ci/ciTypeArrayKlass.hpp" |
| #include "gc/shared/cardTableModRefBS.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "runtime/stubRoutines.hpp" |
| #include "vmreg_arm.inline.hpp" |
| |
| #ifdef ASSERT |
| #define __ gen()->lir(__FILE__, __LINE__)-> |
| #else |
| #define __ gen()->lir()-> |
| #endif |
| |
| void LIRItem::load_byte_item() { |
| load_item(); |
| } |
| |
| void LIRItem::load_nonconstant() { |
| LIR_Opr r = value()->operand(); |
| if (_gen->can_inline_as_constant(value())) { |
| if (!r->is_constant()) { |
| r = LIR_OprFact::value_type(value()->type()); |
| } |
| _result = r; |
| } else { |
| load_item(); |
| } |
| } |
| |
| //-------------------------------------------------------------- |
| // LIRGenerator |
| //-------------------------------------------------------------- |
| |
| |
| LIR_Opr LIRGenerator::exceptionOopOpr() { |
| return FrameMap::Exception_oop_opr; |
| } |
| |
| LIR_Opr LIRGenerator::exceptionPcOpr() { |
| return FrameMap::Exception_pc_opr; |
| } |
| |
| LIR_Opr LIRGenerator::syncLockOpr() { |
| return new_register(T_INT); |
| } |
| |
| LIR_Opr LIRGenerator::syncTempOpr() { |
| return new_register(T_OBJECT); |
| } |
| |
| LIR_Opr LIRGenerator::getThreadTemp() { |
| return LIR_OprFact::illegalOpr; |
| } |
| |
| LIR_Opr LIRGenerator::atomicLockOpr() { |
| return LIR_OprFact::illegalOpr; |
| } |
| |
| LIR_Opr LIRGenerator::result_register_for(ValueType* type, bool callee) { |
| LIR_Opr opr; |
| switch (type->tag()) { |
| case intTag: opr = FrameMap::Int_result_opr; break; |
| case objectTag: opr = FrameMap::Object_result_opr; break; |
| case longTag: opr = FrameMap::Long_result_opr; break; |
| case floatTag: opr = FrameMap::Float_result_opr; break; |
| case doubleTag: opr = FrameMap::Double_result_opr; break; |
| case addressTag: |
| default: ShouldNotReachHere(); return LIR_OprFact::illegalOpr; |
| } |
| assert(opr->type_field() == as_OprType(as_BasicType(type)), "type mismatch"); |
| return opr; |
| } |
| |
| |
| LIR_Opr LIRGenerator::rlock_byte(BasicType type) { |
| return new_register(T_INT); |
| } |
| |
| |
| //--------- loading items into registers -------------------------------- |
| |
| |
| bool LIRGenerator::can_store_as_constant(Value v, BasicType type) const { |
| #ifdef AARCH64 |
| if (v->type()->as_IntConstant() != NULL) { |
| return v->type()->as_IntConstant()->value() == 0; |
| } else if (v->type()->as_LongConstant() != NULL) { |
| return v->type()->as_LongConstant()->value() == 0; |
| } else if (v->type()->as_ObjectConstant() != NULL) { |
| return v->type()->as_ObjectConstant()->value()->is_null_object(); |
| } else if (v->type()->as_FloatConstant() != NULL) { |
| return jint_cast(v->type()->as_FloatConstant()->value()) == 0; |
| } else if (v->type()->as_DoubleConstant() != NULL) { |
| return jlong_cast(v->type()->as_DoubleConstant()->value()) == 0; |
| } |
| #endif // AARCH64 |
| return false; |
| } |
| |
| |
| bool LIRGenerator::can_inline_as_constant(Value v) const { |
| if (v->type()->as_IntConstant() != NULL) { |
| return Assembler::is_arith_imm_in_range(v->type()->as_IntConstant()->value()); |
| } else if (v->type()->as_ObjectConstant() != NULL) { |
| return v->type()->as_ObjectConstant()->value()->is_null_object(); |
| #ifdef AARCH64 |
| } else if (v->type()->as_LongConstant() != NULL) { |
| return Assembler::is_arith_imm_in_range(v->type()->as_LongConstant()->value()); |
| #else |
| } else if (v->type()->as_FloatConstant() != NULL) { |
| return v->type()->as_FloatConstant()->value() == 0.0f; |
| } else if (v->type()->as_DoubleConstant() != NULL) { |
| return v->type()->as_DoubleConstant()->value() == 0.0; |
| #endif // AARCH64 |
| } |
| return false; |
| } |
| |
| |
| bool LIRGenerator::can_inline_as_constant(LIR_Const* c) const { |
| ShouldNotCallThis(); // Not used on ARM |
| return false; |
| } |
| |
| |
| #ifdef AARCH64 |
| |
| static bool can_inline_as_constant_in_cmp(Value v) { |
| jlong constant; |
| if (v->type()->as_IntConstant() != NULL) { |
| constant = v->type()->as_IntConstant()->value(); |
| } else if (v->type()->as_LongConstant() != NULL) { |
| constant = v->type()->as_LongConstant()->value(); |
| } else if (v->type()->as_ObjectConstant() != NULL) { |
| return v->type()->as_ObjectConstant()->value()->is_null_object(); |
| } else if (v->type()->as_FloatConstant() != NULL) { |
| return v->type()->as_FloatConstant()->value() == 0.0f; |
| } else if (v->type()->as_DoubleConstant() != NULL) { |
| return v->type()->as_DoubleConstant()->value() == 0.0; |
| } else { |
| return false; |
| } |
| |
| return Assembler::is_arith_imm_in_range(constant) || Assembler::is_arith_imm_in_range(-constant); |
| } |
| |
| |
| static bool can_inline_as_constant_in_logic(Value v) { |
| if (v->type()->as_IntConstant() != NULL) { |
| return Assembler::LogicalImmediate(v->type()->as_IntConstant()->value(), true).is_encoded(); |
| } else if (v->type()->as_LongConstant() != NULL) { |
| return Assembler::LogicalImmediate(v->type()->as_LongConstant()->value(), false).is_encoded(); |
| } |
| return false; |
| } |
| |
| |
| #endif // AARCH64 |
| |
| |
| LIR_Opr LIRGenerator::safepoint_poll_register() { |
| return LIR_OprFact::illegalOpr; |
| } |
| |
| |
| static LIR_Opr make_constant(BasicType type, jlong c) { |
| switch (type) { |
| case T_ADDRESS: |
| case T_OBJECT: return LIR_OprFact::intptrConst(c); |
| case T_LONG: return LIR_OprFact::longConst(c); |
| case T_INT: return LIR_OprFact::intConst(c); |
| default: ShouldNotReachHere(); |
| return LIR_OprFact::intConst(-1); |
| } |
| } |
| |
| #ifdef AARCH64 |
| |
| void LIRGenerator::add_constant(LIR_Opr src, jlong c, LIR_Opr dest) { |
| if (c == 0) { |
| __ move(src, dest); |
| return; |
| } |
| |
| BasicType type = src->type(); |
| bool is_neg = (c < 0); |
| c = ABS(c); |
| |
| if ((c >> 24) == 0) { |
| for (int shift = 0; shift <= 12; shift += 12) { |
| int part = ((int)c) & (right_n_bits(12) << shift); |
| if (part != 0) { |
| if (is_neg) { |
| __ sub(src, make_constant(type, part), dest); |
| } else { |
| __ add(src, make_constant(type, part), dest); |
| } |
| src = dest; |
| } |
| } |
| } else { |
| __ move(make_constant(type, c), dest); |
| if (is_neg) { |
| __ sub(src, dest, dest); |
| } else { |
| __ add(src, dest, dest); |
| } |
| } |
| } |
| |
| #endif // AARCH64 |
| |
| |
| void LIRGenerator::add_large_constant(LIR_Opr src, int c, LIR_Opr dest) { |
| assert(c != 0, "must be"); |
| #ifdef AARCH64 |
| add_constant(src, c, dest); |
| #else |
| // Find first non-zero bit |
| int shift = 0; |
| while ((c & (3 << shift)) == 0) { |
| shift += 2; |
| } |
| // Add the least significant part of the constant |
| int mask = 0xff << shift; |
| __ add(src, LIR_OprFact::intConst(c & mask), dest); |
| // Add up to 3 other parts of the constant; |
| // each of them can be represented as rotated_imm |
| if (c & (mask << 8)) { |
| __ add(dest, LIR_OprFact::intConst(c & (mask << 8)), dest); |
| } |
| if (c & (mask << 16)) { |
| __ add(dest, LIR_OprFact::intConst(c & (mask << 16)), dest); |
| } |
| if (c & (mask << 24)) { |
| __ add(dest, LIR_OprFact::intConst(c & (mask << 24)), dest); |
| } |
| #endif // AARCH64 |
| } |
| |
| static LIR_Address* make_address(LIR_Opr base, LIR_Opr index, LIR_Address::Scale scale, BasicType type) { |
| return new LIR_Address(base, index, scale, 0, type); |
| } |
| |
| LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index, |
| int shift, int disp, BasicType type) { |
| assert(base->is_register(), "must be"); |
| |
| if (index->is_constant()) { |
| disp += index->as_constant_ptr()->as_jint() << shift; |
| index = LIR_OprFact::illegalOpr; |
| } |
| |
| #ifndef AARCH64 |
| if (base->type() == T_LONG) { |
| LIR_Opr tmp = new_register(T_INT); |
| __ convert(Bytecodes::_l2i, base, tmp); |
| base = tmp; |
| } |
| if (index != LIR_OprFact::illegalOpr && index->type() == T_LONG) { |
| LIR_Opr tmp = new_register(T_INT); |
| __ convert(Bytecodes::_l2i, index, tmp); |
| index = tmp; |
| } |
| // At this point base and index should be all ints and not constants |
| assert(base->is_single_cpu() && !base->is_constant(), "base should be an non-constant int"); |
| assert(index->is_illegal() || (index->type() == T_INT && !index->is_constant()), "index should be an non-constant int"); |
| #endif |
| |
| int max_disp; |
| bool disp_is_in_range; |
| bool embedded_shift; |
| |
| #ifdef AARCH64 |
| int align = exact_log2(type2aelembytes(type, true)); |
| assert((disp & right_n_bits(align)) == 0, "displacement is not aligned"); |
| assert(shift == 0 || shift == align, "shift should be zero or equal to embedded align"); |
| max_disp = (1 << 12) << align; |
| |
| if (disp >= 0) { |
| disp_is_in_range = Assembler::is_unsigned_imm_in_range(disp, 12, align); |
| } else { |
| disp_is_in_range = Assembler::is_imm_in_range(disp, 9, 0); |
| } |
| |
| embedded_shift = true; |
| #else |
| switch (type) { |
| case T_BYTE: |
| case T_SHORT: |
| case T_CHAR: |
| max_disp = 256; // ldrh, ldrsb encoding has 8-bit offset |
| embedded_shift = false; |
| break; |
| case T_FLOAT: |
| case T_DOUBLE: |
| max_disp = 1024; // flds, fldd have 8-bit offset multiplied by 4 |
| embedded_shift = false; |
| break; |
| case T_LONG: |
| max_disp = 4096; |
| embedded_shift = false; |
| break; |
| default: |
| max_disp = 4096; // ldr, ldrb allow 12-bit offset |
| embedded_shift = true; |
| } |
| |
| disp_is_in_range = (-max_disp < disp && disp < max_disp); |
| #endif // !AARCH64 |
| |
| if (index->is_register()) { |
| LIR_Opr tmp = new_pointer_register(); |
| if (!disp_is_in_range) { |
| add_large_constant(base, disp, tmp); |
| base = tmp; |
| disp = 0; |
| } |
| LIR_Address* addr = make_address(base, index, (LIR_Address::Scale)shift, type); |
| if (disp == 0 && embedded_shift) { |
| // can use ldr/str instruction with register index |
| return addr; |
| } else { |
| LIR_Opr tmp = new_pointer_register(); |
| __ add(base, LIR_OprFact::address(addr), tmp); // add with shifted/extended register |
| return new LIR_Address(tmp, disp, type); |
| } |
| } |
| |
| // If the displacement is too large to be inlined into LDR instruction, |
| // generate large constant with additional sequence of ADD instructions |
| int excess_disp = disp & ~(max_disp - 1); |
| if (excess_disp != 0) { |
| LIR_Opr tmp = new_pointer_register(); |
| add_large_constant(base, excess_disp, tmp); |
| base = tmp; |
| } |
| return new LIR_Address(base, disp & (max_disp - 1), type); |
| } |
| |
| |
| LIR_Address* LIRGenerator::emit_array_address(LIR_Opr array_opr, LIR_Opr index_opr, |
| BasicType type, bool needs_card_mark) { |
| int base_offset = arrayOopDesc::base_offset_in_bytes(type); |
| int elem_size = type2aelembytes(type); |
| |
| if (index_opr->is_constant()) { |
| int offset = base_offset + index_opr->as_constant_ptr()->as_jint() * elem_size; |
| if (needs_card_mark) { |
| LIR_Opr base_opr = new_pointer_register(); |
| add_large_constant(array_opr, offset, base_opr); |
| return new LIR_Address(base_opr, (intx)0, type); |
| } else { |
| return generate_address(array_opr, offset, type); |
| } |
| } else { |
| assert(index_opr->is_register(), "must be"); |
| int scale = exact_log2(elem_size); |
| if (needs_card_mark) { |
| LIR_Opr base_opr = new_pointer_register(); |
| LIR_Address* addr = make_address(base_opr, index_opr, (LIR_Address::Scale)scale, type); |
| __ add(array_opr, LIR_OprFact::intptrConst(base_offset), base_opr); |
| __ add(base_opr, LIR_OprFact::address(addr), base_opr); // add with shifted/extended register |
| return new LIR_Address(base_opr, type); |
| } else { |
| return generate_address(array_opr, index_opr, scale, base_offset, type); |
| } |
| } |
| } |
| |
| |
| LIR_Opr LIRGenerator::load_immediate(int x, BasicType type) { |
| assert(type == T_LONG || type == T_INT, "should be"); |
| LIR_Opr r = make_constant(type, x); |
| #ifdef AARCH64 |
| bool imm_in_range = Assembler::LogicalImmediate(x, type == T_INT).is_encoded(); |
| #else |
| bool imm_in_range = AsmOperand::is_rotated_imm(x); |
| #endif // AARCH64 |
| if (!imm_in_range) { |
| LIR_Opr tmp = new_register(type); |
| __ move(r, tmp); |
| return tmp; |
| } |
| return r; |
| } |
| |
| |
| void LIRGenerator::increment_counter(address counter, BasicType type, int step) { |
| LIR_Opr pointer = new_pointer_register(); |
| __ move(LIR_OprFact::intptrConst(counter), pointer); |
| LIR_Address* addr = new LIR_Address(pointer, type); |
| increment_counter(addr, step); |
| } |
| |
| |
| void LIRGenerator::increment_counter(LIR_Address* addr, int step) { |
| LIR_Opr temp = new_register(addr->type()); |
| __ move(addr, temp); |
| __ add(temp, make_constant(addr->type(), step), temp); |
| __ move(temp, addr); |
| } |
| |
| |
| void LIRGenerator::cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info) { |
| __ load(new LIR_Address(base, disp, T_INT), FrameMap::LR_opr, info); |
| __ cmp(condition, FrameMap::LR_opr, c); |
| } |
| |
| |
| void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, int disp, BasicType type, CodeEmitInfo* info) { |
| __ load(new LIR_Address(base, disp, type), FrameMap::LR_opr, info); |
| __ cmp(condition, reg, FrameMap::LR_opr); |
| } |
| |
| |
| bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, int c, LIR_Opr result, LIR_Opr tmp) { |
| assert(left != result, "should be different registers"); |
| if (is_power_of_2(c + 1)) { |
| #ifdef AARCH64 |
| __ shift_left(left, log2_intptr(c + 1), result); |
| __ sub(result, left, result); |
| #else |
| LIR_Address::Scale scale = (LIR_Address::Scale) log2_intptr(c + 1); |
| LIR_Address* addr = new LIR_Address(left, left, scale, 0, T_INT); |
| __ sub(LIR_OprFact::address(addr), left, result); // rsb with shifted register |
| #endif // AARCH64 |
| return true; |
| } else if (is_power_of_2(c - 1)) { |
| LIR_Address::Scale scale = (LIR_Address::Scale) log2_intptr(c - 1); |
| LIR_Address* addr = new LIR_Address(left, left, scale, 0, T_INT); |
| __ add(left, LIR_OprFact::address(addr), result); // add with shifted register |
| return true; |
| } |
| return false; |
| } |
| |
| |
| void LIRGenerator::store_stack_parameter(LIR_Opr item, ByteSize offset_from_sp) { |
| assert(item->type() == T_INT, "other types are not expected"); |
| __ store(item, new LIR_Address(FrameMap::SP_opr, in_bytes(offset_from_sp), item->type())); |
| } |
| |
| void LIRGenerator::set_card(LIR_Opr value, LIR_Address* card_addr) { |
| assert(CardTableModRefBS::dirty_card_val() == 0, |
| "Cannot use ZR register (aarch64) or the register containing the card table base address directly (aarch32) otherwise"); |
| #ifdef AARCH64 |
| // AARCH64 has a register that is constant zero. We can use that one to set the |
| // value in the card table to dirty. |
| __ move(FrameMap::ZR_opr, card_addr); |
| #else // AARCH64 |
| CardTableModRefBS* ct = (CardTableModRefBS*)_bs; |
| if(((intx)ct->byte_map_base & 0xff) == 0) { |
| // If the card table base address is aligned to 256 bytes, we can use the register |
| // that contains the card_table_base_address. |
| __ move(value, card_addr); |
| } else { |
| // Otherwise we need to create a register containing that value. |
| LIR_Opr tmp_zero = new_register(T_INT); |
| __ move(LIR_OprFact::intConst(CardTableModRefBS::dirty_card_val()), tmp_zero); |
| __ move(tmp_zero, card_addr); |
| } |
| #endif // AARCH64 |
| } |
| |
| void LIRGenerator::CardTableModRef_post_barrier_helper(LIR_OprDesc* addr, LIR_Const* card_table_base) { |
| assert(addr->is_register(), "must be a register at this point"); |
| |
| LIR_Opr tmp = FrameMap::LR_ptr_opr; |
| |
| // TODO-AARCH64: check performance |
| bool load_card_table_base_const = AARCH64_ONLY(false) NOT_AARCH64(VM_Version::supports_movw()); |
| if (load_card_table_base_const) { |
| __ move((LIR_Opr)card_table_base, tmp); |
| } else { |
| __ move(new LIR_Address(FrameMap::Rthread_opr, in_bytes(JavaThread::card_table_base_offset()), T_ADDRESS), tmp); |
| } |
| |
| #ifdef AARCH64 |
| LIR_Address* shifted_reg_operand = new LIR_Address(tmp, addr, (LIR_Address::Scale) -CardTableModRefBS::card_shift, 0, T_BYTE); |
| LIR_Opr tmp2 = tmp; |
| __ add(tmp, LIR_OprFact::address(shifted_reg_operand), tmp2); // tmp2 = tmp + (addr >> CardTableModRefBS::card_shift) |
| LIR_Address* card_addr = new LIR_Address(tmp2, T_BYTE); |
| #else |
| // Use unsigned type T_BOOLEAN here rather than (signed) T_BYTE since signed load |
| // byte instruction does not support the addressing mode we need. |
| LIR_Address* card_addr = new LIR_Address(tmp, addr, (LIR_Address::Scale) -CardTableModRefBS::card_shift, 0, T_BOOLEAN); |
| #endif |
| if (UseCondCardMark) { |
| if (UseConcMarkSweepGC) { |
| __ membar_storeload(); |
| } |
| LIR_Opr cur_value = new_register(T_INT); |
| __ move(card_addr, cur_value); |
| |
| LabelObj* L_already_dirty = new LabelObj(); |
| __ cmp(lir_cond_equal, cur_value, LIR_OprFact::intConst(CardTableModRefBS::dirty_card_val())); |
| __ branch(lir_cond_equal, T_BYTE, L_already_dirty->label()); |
| set_card(tmp, card_addr); |
| __ branch_destination(L_already_dirty->label()); |
| } else { |
| if (UseConcMarkSweepGC && CMSPrecleaningEnabled) { |
| __ membar_storestore(); |
| } |
| set_card(tmp, card_addr); |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| // visitor functions |
| //---------------------------------------------------------------------- |
| |
| |
| void LIRGenerator::do_StoreIndexed(StoreIndexed* x) { |
| assert(x->is_pinned(),""); |
| bool needs_range_check = x->compute_needs_range_check(); |
| bool use_length = x->length() != NULL; |
| bool obj_store = x->elt_type() == T_ARRAY || x->elt_type() == T_OBJECT; |
| bool needs_store_check = obj_store && (x->value()->as_Constant() == NULL || |
| !get_jobject_constant(x->value())->is_null_object() || |
| x->should_profile()); |
| |
| LIRItem array(x->array(), this); |
| LIRItem index(x->index(), this); |
| LIRItem value(x->value(), this); |
| LIRItem length(this); |
| |
| array.load_item(); |
| index.load_nonconstant(); |
| |
| if (use_length && needs_range_check) { |
| length.set_instruction(x->length()); |
| length.load_item(); |
| } |
| if (needs_store_check || x->check_boolean()) { |
| value.load_item(); |
| } else { |
| value.load_for_store(x->elt_type()); |
| } |
| |
| set_no_result(x); |
| |
| // the CodeEmitInfo must be duplicated for each different |
| // LIR-instruction because spilling can occur anywhere between two |
| // instructions and so the debug information must be different |
| CodeEmitInfo* range_check_info = state_for(x); |
| CodeEmitInfo* null_check_info = NULL; |
| if (x->needs_null_check()) { |
| null_check_info = new CodeEmitInfo(range_check_info); |
| } |
| |
| // emit array address setup early so it schedules better |
| LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), obj_store); |
| |
| if (GenerateRangeChecks && needs_range_check) { |
| if (use_length) { |
| __ cmp(lir_cond_belowEqual, length.result(), index.result()); |
| __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); |
| } else { |
| array_range_check(array.result(), index.result(), null_check_info, range_check_info); |
| // range_check also does the null check |
| null_check_info = NULL; |
| } |
| } |
| |
| if (GenerateArrayStoreCheck && needs_store_check) { |
| LIR_Opr tmp1 = FrameMap::R0_oop_opr; |
| LIR_Opr tmp2 = FrameMap::R1_oop_opr; |
| CodeEmitInfo* store_check_info = new CodeEmitInfo(range_check_info); |
| __ store_check(value.result(), array.result(), tmp1, tmp2, |
| LIR_OprFact::illegalOpr, store_check_info, |
| x->profiled_method(), x->profiled_bci()); |
| } |
| |
| #if INCLUDE_ALL_GCS |
| if (obj_store) { |
| // Needs GC write barriers. |
| pre_barrier(LIR_OprFact::address(array_addr), LIR_OprFact::illegalOpr /* pre_val */, |
| true /* do_load */, false /* patch */, NULL); |
| } |
| #endif // INCLUDE_ALL_GCS |
| |
| LIR_Opr result = maybe_mask_boolean(x, array.result(), value.result(), null_check_info); |
| __ move(result, array_addr, null_check_info); |
| if (obj_store) { |
| post_barrier(LIR_OprFact::address(array_addr), value.result()); |
| } |
| } |
| |
| |
| void LIRGenerator::do_MonitorEnter(MonitorEnter* x) { |
| assert(x->is_pinned(),""); |
| LIRItem obj(x->obj(), this); |
| obj.load_item(); |
| set_no_result(x); |
| |
| LIR_Opr lock = new_pointer_register(); |
| LIR_Opr hdr = new_pointer_register(); |
| |
| // Need a scratch register for biased locking on arm |
| LIR_Opr scratch = LIR_OprFact::illegalOpr; |
| if(UseBiasedLocking) { |
| scratch = new_pointer_register(); |
| } else { |
| scratch = atomicLockOpr(); |
| } |
| |
| CodeEmitInfo* info_for_exception = NULL; |
| if (x->needs_null_check()) { |
| info_for_exception = state_for(x); |
| } |
| |
| CodeEmitInfo* info = state_for(x, x->state(), true); |
| monitor_enter(obj.result(), lock, hdr, scratch, |
| x->monitor_no(), info_for_exception, info); |
| } |
| |
| |
| void LIRGenerator::do_MonitorExit(MonitorExit* x) { |
| assert(x->is_pinned(),""); |
| LIRItem obj(x->obj(), this); |
| obj.dont_load_item(); |
| set_no_result(x); |
| |
| LIR_Opr obj_temp = new_pointer_register(); |
| LIR_Opr lock = new_pointer_register(); |
| LIR_Opr hdr = new_pointer_register(); |
| |
| monitor_exit(obj_temp, lock, hdr, atomicLockOpr(), x->monitor_no()); |
| } |
| |
| |
| // _ineg, _lneg, _fneg, _dneg |
| void LIRGenerator::do_NegateOp(NegateOp* x) { |
| #ifdef __SOFTFP__ |
| address runtime_func = NULL; |
| ValueTag tag = x->type()->tag(); |
| if (tag == floatTag) { |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::fneg); |
| } else if (tag == doubleTag) { |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dneg); |
| } |
| if (runtime_func != NULL) { |
| set_result(x, call_runtime(x->x(), runtime_func, x->type(), NULL)); |
| return; |
| } |
| #endif // __SOFTFP__ |
| LIRItem value(x->x(), this); |
| value.load_item(); |
| LIR_Opr reg = rlock_result(x); |
| __ negate(value.result(), reg); |
| } |
| |
| |
| // for _fadd, _fmul, _fsub, _fdiv, _frem |
| // _dadd, _dmul, _dsub, _ddiv, _drem |
| void LIRGenerator::do_ArithmeticOp_FPU(ArithmeticOp* x) { |
| address runtime_func; |
| switch (x->op()) { |
| case Bytecodes::_frem: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::frem); |
| break; |
| case Bytecodes::_drem: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::drem); |
| break; |
| #ifdef __SOFTFP__ |
| // Call function compiled with -msoft-float. |
| |
| // __aeabi_XXXX_glibc: Imported code from glibc soft-fp bundle for calculation accuracy improvement. See CR 6757269. |
| |
| case Bytecodes::_fadd: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fadd_glibc); |
| break; |
| case Bytecodes::_fmul: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fmul); |
| break; |
| case Bytecodes::_fsub: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fsub_glibc); |
| break; |
| case Bytecodes::_fdiv: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fdiv); |
| break; |
| case Bytecodes::_dadd: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_dadd_glibc); |
| break; |
| case Bytecodes::_dmul: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_dmul); |
| break; |
| case Bytecodes::_dsub: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_dsub_glibc); |
| break; |
| case Bytecodes::_ddiv: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_ddiv); |
| break; |
| default: |
| ShouldNotReachHere(); |
| #else // __SOFTFP__ |
| default: { |
| LIRItem left(x->x(), this); |
| LIRItem right(x->y(), this); |
| left.load_item(); |
| right.load_item(); |
| rlock_result(x); |
| arithmetic_op_fpu(x->op(), x->operand(), left.result(), right.result(), x->is_strictfp()); |
| return; |
| } |
| #endif // __SOFTFP__ |
| } |
| |
| LIR_Opr result = call_runtime(x->x(), x->y(), runtime_func, x->type(), NULL); |
| set_result(x, result); |
| } |
| |
| |
| void LIRGenerator::make_div_by_zero_check(LIR_Opr right_arg, BasicType type, CodeEmitInfo* info) { |
| assert(right_arg->is_register(), "must be"); |
| __ cmp(lir_cond_equal, right_arg, make_constant(type, 0)); |
| __ branch(lir_cond_equal, type, new DivByZeroStub(info)); |
| } |
| |
| |
| // for _ladd, _lmul, _lsub, _ldiv, _lrem |
| void LIRGenerator::do_ArithmeticOp_Long(ArithmeticOp* x) { |
| CodeEmitInfo* info = NULL; |
| if (x->op() == Bytecodes::_ldiv || x->op() == Bytecodes::_lrem) { |
| info = state_for(x); |
| } |
| |
| #ifdef AARCH64 |
| LIRItem left(x->x(), this); |
| LIRItem right(x->y(), this); |
| LIRItem* left_arg = &left; |
| LIRItem* right_arg = &right; |
| |
| // Test if instr is commutative and if we should swap |
| if (x->is_commutative() && left.is_constant()) { |
| left_arg = &right; |
| right_arg = &left; |
| } |
| |
| left_arg->load_item(); |
| switch (x->op()) { |
| case Bytecodes::_ldiv: |
| right_arg->load_item(); |
| make_div_by_zero_check(right_arg->result(), T_LONG, info); |
| __ idiv(left_arg->result(), right_arg->result(), rlock_result(x), LIR_OprFact::illegalOpr, NULL); |
| break; |
| |
| case Bytecodes::_lrem: { |
| right_arg->load_item(); |
| make_div_by_zero_check(right_arg->result(), T_LONG, info); |
| // a % b is implemented with 2 instructions: |
| // tmp = a/b (sdiv) |
| // res = a - b*tmp (msub) |
| LIR_Opr tmp = FrameMap::as_long_opr(Rtemp); |
| __ irem(left_arg->result(), right_arg->result(), rlock_result(x), tmp, NULL); |
| break; |
| } |
| |
| case Bytecodes::_lmul: |
| if (right_arg->is_constant() && is_power_of_2_long(right_arg->get_jlong_constant())) { |
| right_arg->dont_load_item(); |
| __ shift_left(left_arg->result(), exact_log2_long(right_arg->get_jlong_constant()), rlock_result(x)); |
| } else { |
| right_arg->load_item(); |
| __ mul(left_arg->result(), right_arg->result(), rlock_result(x)); |
| } |
| break; |
| |
| case Bytecodes::_ladd: |
| case Bytecodes::_lsub: |
| if (right_arg->is_constant()) { |
| jlong c = right_arg->get_jlong_constant(); |
| add_constant(left_arg->result(), (x->op() == Bytecodes::_ladd) ? c : -c, rlock_result(x)); |
| } else { |
| right_arg->load_item(); |
| arithmetic_op_long(x->op(), rlock_result(x), left_arg->result(), right_arg->result(), NULL); |
| } |
| break; |
| |
| default: |
| ShouldNotReachHere(); |
| } |
| #else |
| switch (x->op()) { |
| case Bytecodes::_ldiv: |
| case Bytecodes::_lrem: { |
| LIRItem right(x->y(), this); |
| right.load_item(); |
| make_div_by_zero_check(right.result(), T_LONG, info); |
| } |
| // Fall through |
| case Bytecodes::_lmul: { |
| address entry; |
| switch (x->op()) { |
| case Bytecodes::_lrem: |
| entry = CAST_FROM_FN_PTR(address, SharedRuntime::lrem); |
| break; |
| case Bytecodes::_ldiv: |
| entry = CAST_FROM_FN_PTR(address, SharedRuntime::ldiv); |
| break; |
| case Bytecodes::_lmul: |
| entry = CAST_FROM_FN_PTR(address, SharedRuntime::lmul); |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| LIR_Opr result = call_runtime(x->y(), x->x(), entry, x->type(), NULL); |
| set_result(x, result); |
| break; |
| } |
| case Bytecodes::_ladd: |
| case Bytecodes::_lsub: { |
| LIRItem left(x->x(), this); |
| LIRItem right(x->y(), this); |
| left.load_item(); |
| right.load_item(); |
| rlock_result(x); |
| arithmetic_op_long(x->op(), x->operand(), left.result(), right.result(), NULL); |
| break; |
| } |
| default: |
| ShouldNotReachHere(); |
| } |
| #endif // AARCH64 |
| } |
| |
| |
| // for: _iadd, _imul, _isub, _idiv, _irem |
| void LIRGenerator::do_ArithmeticOp_Int(ArithmeticOp* x) { |
| bool is_div_rem = x->op() == Bytecodes::_idiv || x->op() == Bytecodes::_irem; |
| LIRItem left(x->x(), this); |
| LIRItem right(x->y(), this); |
| LIRItem* left_arg = &left; |
| LIRItem* right_arg = &right; |
| |
| // Test if instr is commutative and if we should swap |
| if (x->is_commutative() && left.is_constant()) { |
| left_arg = &right; |
| right_arg = &left; |
| } |
| |
| if (is_div_rem) { |
| CodeEmitInfo* info = state_for(x); |
| if (x->op() == Bytecodes::_idiv && right_arg->is_constant() && is_power_of_2(right_arg->get_jint_constant())) { |
| left_arg->load_item(); |
| right_arg->dont_load_item(); |
| LIR_Opr tmp = LIR_OprFact::illegalOpr; |
| LIR_Opr result = rlock_result(x); |
| __ idiv(left_arg->result(), right_arg->result(), result, tmp, info); |
| } else { |
| #ifdef AARCH64 |
| left_arg->load_item(); |
| right_arg->load_item(); |
| make_div_by_zero_check(right_arg->result(), T_INT, info); |
| if (x->op() == Bytecodes::_idiv) { |
| __ idiv(left_arg->result(), right_arg->result(), rlock_result(x), LIR_OprFact::illegalOpr, NULL); |
| } else { |
| // a % b is implemented with 2 instructions: |
| // tmp = a/b (sdiv) |
| // res = a - b*tmp (msub) |
| LIR_Opr tmp = FrameMap::as_opr(Rtemp); |
| __ irem(left_arg->result(), right_arg->result(), rlock_result(x), tmp, NULL); |
| } |
| #else |
| left_arg->load_item_force(FrameMap::R0_opr); |
| right_arg->load_item_force(FrameMap::R2_opr); |
| LIR_Opr tmp = FrameMap::R1_opr; |
| LIR_Opr result = rlock_result(x); |
| LIR_Opr out_reg; |
| if (x->op() == Bytecodes::_irem) { |
| out_reg = FrameMap::R0_opr; |
| __ irem(left_arg->result(), right_arg->result(), out_reg, tmp, info); |
| } else if (x->op() == Bytecodes::_idiv) { |
| out_reg = FrameMap::R1_opr; |
| __ idiv(left_arg->result(), right_arg->result(), out_reg, tmp, info); |
| } |
| __ move(out_reg, result); |
| #endif // AARCH64 |
| } |
| |
| #ifdef AARCH64 |
| } else if (((x->op() == Bytecodes::_iadd) || (x->op() == Bytecodes::_isub)) && right_arg->is_constant()) { |
| left_arg->load_item(); |
| jint c = right_arg->get_jint_constant(); |
| right_arg->dont_load_item(); |
| add_constant(left_arg->result(), (x->op() == Bytecodes::_iadd) ? c : -c, rlock_result(x)); |
| #endif // AARCH64 |
| |
| } else { |
| left_arg->load_item(); |
| if (x->op() == Bytecodes::_imul && right_arg->is_constant()) { |
| int c = right_arg->get_jint_constant(); |
| if (c > 0 && (is_power_of_2(c) || is_power_of_2(c - 1) || is_power_of_2(c + 1))) { |
| right_arg->dont_load_item(); |
| } else { |
| right_arg->load_item(); |
| } |
| } else { |
| AARCH64_ONLY(assert(!right_arg->is_constant(), "constant right_arg is already handled by this moment");) |
| right_arg->load_nonconstant(); |
| } |
| rlock_result(x); |
| assert(right_arg->is_constant() || right_arg->is_register(), "wrong state of right"); |
| arithmetic_op_int(x->op(), x->operand(), left_arg->result(), right_arg->result(), NULL); |
| } |
| } |
| |
| |
| void LIRGenerator::do_ArithmeticOp(ArithmeticOp* x) { |
| ValueTag tag = x->type()->tag(); |
| assert(x->x()->type()->tag() == tag && x->y()->type()->tag() == tag, "wrong parameters"); |
| switch (tag) { |
| case floatTag: |
| case doubleTag: do_ArithmeticOp_FPU(x); return; |
| case longTag: do_ArithmeticOp_Long(x); return; |
| case intTag: do_ArithmeticOp_Int(x); return; |
| } |
| ShouldNotReachHere(); |
| } |
| |
| |
| // _ishl, _lshl, _ishr, _lshr, _iushr, _lushr |
| void LIRGenerator::do_ShiftOp(ShiftOp* x) { |
| LIRItem value(x->x(), this); |
| LIRItem count(x->y(), this); |
| |
| #ifndef AARCH64 |
| if (value.type()->is_long()) { |
| count.set_destroys_register(); |
| } |
| #endif // !AARCH64 |
| |
| if (count.is_constant()) { |
| assert(count.type()->as_IntConstant() != NULL, "should be"); |
| count.dont_load_item(); |
| } else { |
| count.load_item(); |
| } |
| value.load_item(); |
| |
| LIR_Opr res = rlock_result(x); |
| shift_op(x->op(), res, value.result(), count.result(), LIR_OprFact::illegalOpr); |
| } |
| |
| |
| // _iand, _land, _ior, _lor, _ixor, _lxor |
| void LIRGenerator::do_LogicOp(LogicOp* x) { |
| LIRItem left(x->x(), this); |
| LIRItem right(x->y(), this); |
| |
| left.load_item(); |
| |
| #ifdef AARCH64 |
| if (right.is_constant() && can_inline_as_constant_in_logic(right.value())) { |
| right.dont_load_item(); |
| } else { |
| right.load_item(); |
| } |
| #else |
| right.load_nonconstant(); |
| #endif // AARCH64 |
| |
| logic_op(x->op(), rlock_result(x), left.result(), right.result()); |
| } |
| |
| |
| // _lcmp, _fcmpl, _fcmpg, _dcmpl, _dcmpg |
| void LIRGenerator::do_CompareOp(CompareOp* x) { |
| #ifdef __SOFTFP__ |
| address runtime_func; |
| switch (x->op()) { |
| case Bytecodes::_fcmpl: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::fcmpl); |
| break; |
| case Bytecodes::_fcmpg: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::fcmpg); |
| break; |
| case Bytecodes::_dcmpl: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dcmpl); |
| break; |
| case Bytecodes::_dcmpg: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dcmpg); |
| break; |
| case Bytecodes::_lcmp: { |
| LIRItem left(x->x(), this); |
| LIRItem right(x->y(), this); |
| left.load_item(); |
| right.load_nonconstant(); |
| LIR_Opr reg = rlock_result(x); |
| __ lcmp2int(left.result(), right.result(), reg); |
| return; |
| } |
| default: |
| ShouldNotReachHere(); |
| } |
| LIR_Opr result = call_runtime(x->x(), x->y(), runtime_func, x->type(), NULL); |
| set_result(x, result); |
| #else // __SOFTFP__ |
| LIRItem left(x->x(), this); |
| LIRItem right(x->y(), this); |
| left.load_item(); |
| |
| #ifdef AARCH64 |
| if (right.is_constant() && can_inline_as_constant_in_cmp(right.value())) { |
| right.dont_load_item(); |
| } else { |
| right.load_item(); |
| } |
| #else |
| right.load_nonconstant(); |
| #endif // AARCH64 |
| |
| LIR_Opr reg = rlock_result(x); |
| |
| if (x->x()->type()->is_float_kind()) { |
| Bytecodes::Code code = x->op(); |
| __ fcmp2int(left.result(), right.result(), reg, (code == Bytecodes::_fcmpl || code == Bytecodes::_dcmpl)); |
| } else if (x->x()->type()->tag() == longTag) { |
| __ lcmp2int(left.result(), right.result(), reg); |
| } else { |
| ShouldNotReachHere(); |
| } |
| #endif // __SOFTFP__ |
| } |
| |
| |
| void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) { |
| assert(x->number_of_arguments() == 4, "wrong type"); |
| LIRItem obj (x->argument_at(0), this); // object |
| LIRItem offset(x->argument_at(1), this); // offset of field |
| LIRItem cmp (x->argument_at(2), this); // value to compare with field |
| LIRItem val (x->argument_at(3), this); // replace field with val if matches cmp |
| |
| LIR_Opr addr = new_pointer_register(); |
| LIR_Opr tmp1 = LIR_OprFact::illegalOpr; |
| LIR_Opr tmp2 = LIR_OprFact::illegalOpr; |
| |
| // get address of field |
| obj.load_item(); |
| offset.load_item(); |
| cmp.load_item(); |
| val.load_item(); |
| |
| __ add(obj.result(), offset.result(), addr); |
| LIR_Opr result = rlock_result(x); |
| |
| if (type == objectType) { |
| #if INCLUDE_ALL_GCS |
| // Do the pre-write barrier, if any. |
| pre_barrier(addr, LIR_OprFact::illegalOpr /* pre_val */, |
| true /* do_load */, false /* patch */, NULL); |
| #endif // INCLUDE_ALL_GCS |
| #ifdef AARCH64 |
| if (UseCompressedOops) { |
| tmp1 = new_pointer_register(); |
| tmp2 = new_pointer_register(); |
| } |
| #endif // AARCH64 |
| __ cas_obj(addr, cmp.result(), val.result(), tmp1, tmp2, result); |
| post_barrier(addr, val.result()); |
| } |
| else if (type == intType) { |
| __ cas_int(addr, cmp.result(), val.result(), tmp1, tmp1, result); |
| } |
| else if (type == longType) { |
| #ifndef AARCH64 |
| tmp1 = new_register(T_LONG); |
| #endif // !AARCH64 |
| __ cas_long(addr, cmp.result(), val.result(), tmp1, tmp2, result); |
| } |
| else { |
| ShouldNotReachHere(); |
| } |
| } |
| |
| |
| void LIRGenerator::do_MathIntrinsic(Intrinsic* x) { |
| address runtime_func; |
| switch (x->id()) { |
| case vmIntrinsics::_dabs: { |
| #ifdef __SOFTFP__ |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dabs); |
| break; |
| #else |
| assert(x->number_of_arguments() == 1, "wrong type"); |
| LIRItem value(x->argument_at(0), this); |
| value.load_item(); |
| __ abs(value.result(), rlock_result(x), LIR_OprFact::illegalOpr); |
| return; |
| #endif // __SOFTFP__ |
| } |
| case vmIntrinsics::_dsqrt: { |
| #ifdef __SOFTFP__ |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dsqrt); |
| break; |
| #else |
| assert(x->number_of_arguments() == 1, "wrong type"); |
| LIRItem value(x->argument_at(0), this); |
| value.load_item(); |
| __ sqrt(value.result(), rlock_result(x), LIR_OprFact::illegalOpr); |
| return; |
| #endif // __SOFTFP__ |
| } |
| case vmIntrinsics::_dsin: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dsin); |
| break; |
| case vmIntrinsics::_dcos: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dcos); |
| break; |
| case vmIntrinsics::_dtan: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dtan); |
| break; |
| case vmIntrinsics::_dlog: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dlog); |
| break; |
| case vmIntrinsics::_dlog10: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10); |
| break; |
| case vmIntrinsics::_dexp: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dexp); |
| break; |
| case vmIntrinsics::_dpow: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dpow); |
| break; |
| default: |
| ShouldNotReachHere(); |
| return; |
| } |
| |
| LIR_Opr result; |
| if (x->number_of_arguments() == 1) { |
| result = call_runtime(x->argument_at(0), runtime_func, x->type(), NULL); |
| } else { |
| assert(x->number_of_arguments() == 2 && x->id() == vmIntrinsics::_dpow, "unexpected intrinsic"); |
| result = call_runtime(x->argument_at(0), x->argument_at(1), runtime_func, x->type(), NULL); |
| } |
| set_result(x, result); |
| } |
| |
| void LIRGenerator::do_FmaIntrinsic(Intrinsic* x) { |
| fatal("FMA intrinsic is not implemented on this platform"); |
| } |
| |
| void LIRGenerator::do_vectorizedMismatch(Intrinsic* x) { |
| fatal("vectorizedMismatch intrinsic is not implemented on this platform"); |
| } |
| |
| void LIRGenerator::do_ArrayCopy(Intrinsic* x) { |
| CodeEmitInfo* info = state_for(x, x->state()); |
| assert(x->number_of_arguments() == 5, "wrong type"); |
| LIRItem src(x->argument_at(0), this); |
| LIRItem src_pos(x->argument_at(1), this); |
| LIRItem dst(x->argument_at(2), this); |
| LIRItem dst_pos(x->argument_at(3), this); |
| LIRItem length(x->argument_at(4), this); |
| |
| // We put arguments into the same registers which are used for a Java call. |
| // Note: we used fixed registers for all arguments because all registers |
| // are caller-saved, so register allocator treats them all as used. |
| src.load_item_force (FrameMap::R0_oop_opr); |
| src_pos.load_item_force(FrameMap::R1_opr); |
| dst.load_item_force (FrameMap::R2_oop_opr); |
| dst_pos.load_item_force(FrameMap::R3_opr); |
| length.load_item_force (FrameMap::R4_opr); |
| LIR_Opr tmp = (FrameMap::R5_opr); |
| set_no_result(x); |
| |
| int flags; |
| ciArrayKlass* expected_type; |
| arraycopy_helper(x, &flags, &expected_type); |
| __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(), length.result(), |
| tmp, expected_type, flags, info); |
| } |
| |
| void LIRGenerator::do_update_CRC32(Intrinsic* x) { |
| fatal("CRC32 intrinsic is not implemented on this platform"); |
| } |
| |
| void LIRGenerator::do_update_CRC32C(Intrinsic* x) { |
| Unimplemented(); |
| } |
| |
| void LIRGenerator::do_Convert(Convert* x) { |
| address runtime_func; |
| switch (x->op()) { |
| #ifndef AARCH64 |
| case Bytecodes::_l2f: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::l2f); |
| break; |
| case Bytecodes::_l2d: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::l2d); |
| break; |
| case Bytecodes::_f2l: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::f2l); |
| break; |
| case Bytecodes::_d2l: |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::d2l); |
| break; |
| #ifdef __SOFTFP__ |
| case Bytecodes::_f2d: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_f2d); |
| break; |
| case Bytecodes::_d2f: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_d2f); |
| break; |
| case Bytecodes::_i2f: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_i2f); |
| break; |
| case Bytecodes::_i2d: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_i2d); |
| break; |
| case Bytecodes::_f2i: |
| runtime_func = CAST_FROM_FN_PTR(address, __aeabi_f2iz); |
| break; |
| case Bytecodes::_d2i: |
| // This is implemented in hard float in assembler on arm but a call |
| // on other platforms. |
| runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::d2i); |
| break; |
| #endif // __SOFTFP__ |
| #endif // !AARCH64 |
| default: { |
| LIRItem value(x->value(), this); |
| value.load_item(); |
| LIR_Opr reg = rlock_result(x); |
| __ convert(x->op(), value.result(), reg, NULL); |
| return; |
| } |
| } |
| |
| LIR_Opr result = call_runtime(x->value(), runtime_func, x->type(), NULL); |
| set_result(x, result); |
| } |
| |
| |
| void LIRGenerator::do_NewInstance(NewInstance* x) { |
| print_if_not_loaded(x); |
| |
| CodeEmitInfo* info = state_for(x, x->state()); |
| LIR_Opr reg = result_register_for(x->type()); // R0 is required by runtime call in NewInstanceStub::emit_code |
| LIR_Opr klass_reg = FrameMap::R1_metadata_opr; // R1 is required by runtime call in NewInstanceStub::emit_code |
| LIR_Opr tmp1 = new_register(objectType); |
| LIR_Opr tmp2 = new_register(objectType); |
| LIR_Opr tmp3 = FrameMap::LR_oop_opr; |
| |
| new_instance(reg, x->klass(), x->is_unresolved(), tmp1, tmp2, tmp3, |
| LIR_OprFact::illegalOpr, klass_reg, info); |
| |
| LIR_Opr result = rlock_result(x); |
| __ move(reg, result); |
| } |
| |
| |
| void LIRGenerator::do_NewTypeArray(NewTypeArray* x) { |
| // Evaluate state_for() first, because it can emit code |
| // with the same fixed registers that are used here (R1, R2) |
| CodeEmitInfo* info = state_for(x, x->state()); |
| LIRItem length(x->length(), this); |
| |
| length.load_item_force(FrameMap::R2_opr); // R2 is required by runtime call in NewTypeArrayStub::emit_code |
| LIR_Opr len = length.result(); |
| |
| LIR_Opr reg = result_register_for(x->type()); // R0 is required by runtime call in NewTypeArrayStub::emit_code |
| LIR_Opr klass_reg = FrameMap::R1_metadata_opr; // R1 is required by runtime call in NewTypeArrayStub::emit_code |
| |
| LIR_Opr tmp1 = new_register(objectType); |
| LIR_Opr tmp2 = new_register(objectType); |
| LIR_Opr tmp3 = FrameMap::LR_oop_opr; |
| LIR_Opr tmp4 = LIR_OprFact::illegalOpr; |
| |
| BasicType elem_type = x->elt_type(); |
| __ metadata2reg(ciTypeArrayKlass::make(elem_type)->constant_encoding(), klass_reg); |
| |
| CodeStub* slow_path = new NewTypeArrayStub(klass_reg, len, reg, info); |
| __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, elem_type, klass_reg, slow_path); |
| |
| LIR_Opr result = rlock_result(x); |
| __ move(reg, result); |
| } |
| |
| |
| void LIRGenerator::do_NewObjectArray(NewObjectArray* x) { |
| // Evaluate state_for() first, because it can emit code |
| // with the same fixed registers that are used here (R1, R2) |
| CodeEmitInfo* info = state_for(x, x->state()); |
| LIRItem length(x->length(), this); |
| |
| length.load_item_force(FrameMap::R2_opr); // R2 is required by runtime call in NewObjectArrayStub::emit_code |
| LIR_Opr len = length.result(); |
| |
| CodeEmitInfo* patching_info = NULL; |
| if (!x->klass()->is_loaded() || PatchALot) { |
| patching_info = state_for(x, x->state_before()); |
| } |
| |
| LIR_Opr reg = result_register_for(x->type()); // R0 is required by runtime call in NewObjectArrayStub::emit_code |
| LIR_Opr klass_reg = FrameMap::R1_metadata_opr; // R1 is required by runtime call in NewObjectArrayStub::emit_code |
| |
| LIR_Opr tmp1 = new_register(objectType); |
| LIR_Opr tmp2 = new_register(objectType); |
| LIR_Opr tmp3 = FrameMap::LR_oop_opr; |
| LIR_Opr tmp4 = LIR_OprFact::illegalOpr; |
| |
| CodeStub* slow_path = new NewObjectArrayStub(klass_reg, len, reg, info); |
| ciMetadata* obj = ciObjArrayKlass::make(x->klass()); |
| if (obj == ciEnv::unloaded_ciobjarrayklass()) { |
| BAILOUT("encountered unloaded_ciobjarrayklass due to out of memory error"); |
| } |
| klass2reg_with_patching(klass_reg, obj, patching_info); |
| __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, T_OBJECT, klass_reg, slow_path); |
| |
| LIR_Opr result = rlock_result(x); |
| __ move(reg, result); |
| } |
| |
| |
| void LIRGenerator::do_NewMultiArray(NewMultiArray* x) { |
| Values* dims = x->dims(); |
| int i = dims->length(); |
| LIRItemList* items = new LIRItemList(i, i, NULL); |
| while (i-- > 0) { |
| LIRItem* size = new LIRItem(dims->at(i), this); |
| items->at_put(i, size); |
| } |
| |
| // Need to get the info before, as the items may become invalid through item_free |
| CodeEmitInfo* patching_info = NULL; |
| if (!x->klass()->is_loaded() || PatchALot) { |
| patching_info = state_for(x, x->state_before()); |
| |
| // Cannot re-use same xhandlers for multiple CodeEmitInfos, so |
| // clone all handlers (NOTE: Usually this is handled transparently |
| // by the CodeEmitInfo cloning logic in CodeStub constructors but |
| // is done explicitly here because a stub isn't being used). |
| x->set_exception_handlers(new XHandlers(x->exception_handlers())); |
| } |
| |
| i = dims->length(); |
| while (i-- > 0) { |
| LIRItem* size = items->at(i); |
| size->load_item(); |
| LIR_Opr sz = size->result(); |
| assert(sz->type() == T_INT, "should be"); |
| store_stack_parameter(sz, in_ByteSize(i * BytesPerInt)); |
| } |
| |
| CodeEmitInfo* info = state_for(x, x->state()); |
| LIR_Opr klass_reg = FrameMap::R0_metadata_opr; |
| klass2reg_with_patching(klass_reg, x->klass(), patching_info); |
| |
| LIR_Opr rank = FrameMap::R2_opr; |
| __ move(LIR_OprFact::intConst(x->rank()), rank); |
| LIR_Opr varargs = FrameMap::SP_opr; |
| LIR_OprList* args = new LIR_OprList(3); |
| args->append(klass_reg); |
| args->append(rank); |
| args->append(varargs); |
| LIR_Opr reg = result_register_for(x->type()); |
| __ call_runtime(Runtime1::entry_for(Runtime1::new_multi_array_id), |
| LIR_OprFact::illegalOpr, reg, args, info); |
| |
| LIR_Opr result = rlock_result(x); |
| __ move(reg, result); |
| } |
| |
| |
| void LIRGenerator::do_BlockBegin(BlockBegin* x) { |
| // nothing to do for now |
| } |
| |
| |
| void LIRGenerator::do_CheckCast(CheckCast* x) { |
| LIRItem obj(x->obj(), this); |
| CodeEmitInfo* patching_info = NULL; |
| if (!x->klass()->is_loaded() || (PatchALot && !x->is_incompatible_class_change_check())) { |
| patching_info = state_for(x, x->state_before()); |
| } |
| |
| obj.load_item(); |
| |
| CodeEmitInfo* info_for_exception = state_for(x); |
| CodeStub* stub; |
| if (x->is_incompatible_class_change_check()) { |
| assert(patching_info == NULL, "can't patch this"); |
| stub = new SimpleExceptionStub(Runtime1::throw_incompatible_class_change_error_id, |
| LIR_OprFact::illegalOpr, info_for_exception); |
| } else { |
| stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id, |
| LIR_OprFact::illegalOpr, info_for_exception); |
| } |
| |
| LIR_Opr out_reg = rlock_result(x); |
| LIR_Opr tmp1 = FrameMap::R0_oop_opr; |
| LIR_Opr tmp2 = FrameMap::R1_oop_opr; |
| LIR_Opr tmp3 = LIR_OprFact::illegalOpr; |
| |
| __ checkcast(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, x->direct_compare(), |
| info_for_exception, patching_info, stub, x->profiled_method(), x->profiled_bci()); |
| } |
| |
| |
| void LIRGenerator::do_InstanceOf(InstanceOf* x) { |
| LIRItem obj(x->obj(), this); |
| CodeEmitInfo* patching_info = NULL; |
| if (!x->klass()->is_loaded() || PatchALot) { |
| patching_info = state_for(x, x->state_before()); |
| } |
| |
| obj.load_item(); |
| LIR_Opr out_reg = rlock_result(x); |
| LIR_Opr tmp1 = FrameMap::R0_oop_opr; |
| LIR_Opr tmp2 = FrameMap::R1_oop_opr; |
| LIR_Opr tmp3 = LIR_OprFact::illegalOpr; |
| |
| __ instanceof(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, |
| x->direct_compare(), patching_info, x->profiled_method(), x->profiled_bci()); |
| } |
| |
| |
| #ifdef __SOFTFP__ |
| // Turn operator if (f <op> g) into runtime call: |
| // call _aeabi_fcmp<op>(f, g) |
| // cmp(eq, 1) |
| // branch(eq, true path). |
| void LIRGenerator::do_soft_float_compare(If* x) { |
| assert(x->number_of_sux() == 2, "inconsistency"); |
| ValueTag tag = x->x()->type()->tag(); |
| If::Condition cond = x->cond(); |
| address runtime_func; |
| // unordered comparison gets the wrong answer because aeabi functions |
| // return false. |
| bool unordered_is_true = x->unordered_is_true(); |
| // reverse of condition for ne |
| bool compare_to_zero = false; |
| switch (lir_cond(cond)) { |
| case lir_cond_notEqual: |
| compare_to_zero = true; // fall through |
| case lir_cond_equal: |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, __aeabi_fcmpeq): |
| CAST_FROM_FN_PTR(address, __aeabi_dcmpeq); |
| break; |
| case lir_cond_less: |
| if (unordered_is_true) { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmplt): |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmplt); |
| } else { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, __aeabi_fcmplt): |
| CAST_FROM_FN_PTR(address, __aeabi_dcmplt); |
| } |
| break; |
| case lir_cond_lessEqual: |
| if (unordered_is_true) { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmple): |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmple); |
| } else { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, __aeabi_fcmple): |
| CAST_FROM_FN_PTR(address, __aeabi_dcmple); |
| } |
| break; |
| case lir_cond_greaterEqual: |
| if (unordered_is_true) { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmpge): |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmpge); |
| } else { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, __aeabi_fcmpge): |
| CAST_FROM_FN_PTR(address, __aeabi_dcmpge); |
| } |
| break; |
| case lir_cond_greater: |
| if (unordered_is_true) { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmpgt): |
| CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmpgt); |
| } else { |
| runtime_func = tag == floatTag ? |
| CAST_FROM_FN_PTR(address, __aeabi_fcmpgt): |
| CAST_FROM_FN_PTR(address, __aeabi_dcmpgt); |
| } |
| break; |
| case lir_cond_aboveEqual: |
| case lir_cond_belowEqual: |
| ShouldNotReachHere(); // We're not going to get these. |
| default: |
| assert(lir_cond(cond) == lir_cond_always, "must be"); |
| ShouldNotReachHere(); |
| } |
| set_no_result(x); |
| |
| // add safepoint before generating condition code so it can be recomputed |
| if (x->is_safepoint()) { |
| increment_backedge_counter(state_for(x, x->state_before()), x->profiled_bci()); |
| __ safepoint(LIR_OprFact::illegalOpr, state_for(x, x->state_before())); |
| } |
| // Call float compare function, returns (1,0) if true or false. |
| LIR_Opr result = call_runtime(x->x(), x->y(), runtime_func, intType, NULL); |
| __ cmp(lir_cond_equal, result, |
| compare_to_zero ? |
| LIR_OprFact::intConst(0) : LIR_OprFact::intConst(1)); |
| profile_branch(x, cond); |
| move_to_phi(x->state()); |
| __ branch(lir_cond_equal, T_INT, x->tsux()); |
| } |
| #endif // __SOFTFP__ |
| |
| void LIRGenerator::do_If(If* x) { |
| assert(x->number_of_sux() == 2, "inconsistency"); |
| ValueTag tag = x->x()->type()->tag(); |
| |
| #ifdef __SOFTFP__ |
| if (tag == floatTag || tag == doubleTag) { |
| do_soft_float_compare(x); |
| assert(x->default_sux() == x->fsux(), "wrong destination above"); |
| __ jump(x->default_sux()); |
| return; |
| } |
| #endif // __SOFTFP__ |
| |
| LIRItem xitem(x->x(), this); |
| LIRItem yitem(x->y(), this); |
| LIRItem* xin = &xitem; |
| LIRItem* yin = &yitem; |
| If::Condition cond = x->cond(); |
| |
| #ifndef AARCH64 |
| if (tag == longTag) { |
| if (cond == If::gtr || cond == If::leq) { |
| cond = Instruction::mirror(cond); |
| xin = &yitem; |
| yin = &xitem; |
| } |
| xin->set_destroys_register(); |
| } |
| #endif // !AARCH64 |
| |
| xin->load_item(); |
| LIR_Opr left = xin->result(); |
| LIR_Opr right; |
| |
| #ifdef AARCH64 |
| if (yin->is_constant() && can_inline_as_constant_in_cmp(yin->value())) { |
| yin->dont_load_item(); |
| } else { |
| yin->load_item(); |
| } |
| right = yin->result(); |
| #else |
| if (tag == longTag && yin->is_constant() && yin->get_jlong_constant() == 0 && |
| (cond == If::eql || cond == If::neq)) { |
| // inline long zero |
| right = LIR_OprFact::value_type(yin->value()->type()); |
| } else { |
| yin->load_nonconstant(); |
| right = yin->result(); |
| } |
| #endif // AARCH64 |
| |
| set_no_result(x); |
| |
| // add safepoint before generating condition code so it can be recomputed |
| if (x->is_safepoint()) { |
| increment_backedge_counter(state_for(x, x->state_before()), x->profiled_bci()); |
| __ safepoint(LIR_OprFact::illegalOpr, state_for(x, x->state_before())); |
| } |
| |
| __ cmp(lir_cond(cond), left, right); |
| profile_branch(x, cond); |
| move_to_phi(x->state()); |
| if (x->x()->type()->is_float_kind()) { |
| __ branch(lir_cond(cond), right->type(), x->tsux(), x->usux()); |
| } else { |
| __ branch(lir_cond(cond), right->type(), x->tsux()); |
| } |
| assert(x->default_sux() == x->fsux(), "wrong destination above"); |
| __ jump(x->default_sux()); |
| } |
| |
| |
| LIR_Opr LIRGenerator::getThreadPointer() { |
| return FrameMap::Rthread_opr; |
| } |
| |
| void LIRGenerator::trace_block_entry(BlockBegin* block) { |
| __ move(LIR_OprFact::intConst(block->block_id()), FrameMap::R0_opr); |
| LIR_OprList* args = new LIR_OprList(1); |
| args->append(FrameMap::R0_opr); |
| address func = CAST_FROM_FN_PTR(address, Runtime1::trace_block_entry); |
| __ call_runtime_leaf(func, getThreadTemp(), LIR_OprFact::illegalOpr, args); |
| } |
| |
| |
| void LIRGenerator::volatile_field_store(LIR_Opr value, LIR_Address* address, |
| CodeEmitInfo* info) { |
| #ifndef AARCH64 |
| if (value->is_double_cpu()) { |
| assert(address->index()->is_illegal(), "should have a constant displacement"); |
| LIR_Opr tmp = new_pointer_register(); |
| add_large_constant(address->base(), address->disp(), tmp); |
| __ volatile_store_mem_reg(value, new LIR_Address(tmp, (intx)0, address->type()), info); |
| return; |
| } |
| #endif // !AARCH64 |
| // TODO-AARCH64 implement with stlr instruction |
| __ store(value, address, info, lir_patch_none); |
| } |
| |
| void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result, |
| CodeEmitInfo* info) { |
| #ifndef AARCH64 |
| if (result->is_double_cpu()) { |
| assert(address->index()->is_illegal(), "should have a constant displacement"); |
| LIR_Opr tmp = new_pointer_register(); |
| add_large_constant(address->base(), address->disp(), tmp); |
| __ volatile_load_mem_reg(new LIR_Address(tmp, (intx)0, address->type()), result, info); |
| return; |
| } |
| #endif // !AARCH64 |
| // TODO-AARCH64 implement with ldar instruction |
| __ load(address, result, info, lir_patch_none); |
| } |
| |
| void LIRGenerator::get_Object_unsafe(LIR_Opr dst, LIR_Opr src, LIR_Opr offset, |
| BasicType type, bool is_volatile) { |
| #ifdef AARCH64 |
| __ load(new LIR_Address(src, offset, type), dst); |
| #else |
| assert(offset->is_single_cpu(), "must be"); |
| if (is_volatile && dst->is_double_cpu()) { |
| LIR_Opr tmp = new_pointer_register(); |
| __ add(src, offset, tmp); |
| __ volatile_load_mem_reg(new LIR_Address(tmp, (intx)0, type), dst, NULL); |
| } else if (type == T_FLOAT || type == T_DOUBLE) { |
| // fld doesn't have indexed addressing mode |
| LIR_Opr tmp = new_register(T_INT); |
| __ add(src, offset, tmp); |
| __ load(new LIR_Address(tmp, (intx)0, type), dst); |
| } else { |
| __ load(new LIR_Address(src, offset, type), dst); |
| } |
| #endif // AARCH64 |
| } |
| |
| void LIRGenerator::put_Object_unsafe(LIR_Opr src, LIR_Opr offset, LIR_Opr data, |
| BasicType type, bool is_volatile) { |
| #ifdef AARCH64 |
| LIR_Address* addr = new LIR_Address(src, offset, type); |
| if (type == T_ARRAY || type == T_OBJECT) { |
| pre_barrier(LIR_OprFact::address(addr), LIR_OprFact::illegalOpr /* pre_val */, |
| true /* do_load */, false /* patch */, NULL); |
| __ move(data, addr); |
| assert(src->is_register(), "must be register"); |
| post_barrier(LIR_OprFact::address(addr), data); |
| } else { |
| __ move(data, addr); |
| } |
| #else |
| assert(offset->is_single_cpu(), "must be"); |
| if (is_volatile && data->is_double_cpu()) { |
| LIR_Opr tmp = new_register(T_INT); |
| __ add(src, offset, tmp); |
| __ volatile_store_mem_reg(data, new LIR_Address(tmp, (intx)0, type), NULL); |
| } else if (type == T_FLOAT || type == T_DOUBLE) { |
| // fst doesn't have indexed addressing mode |
| LIR_Opr tmp = new_register(T_INT); |
| __ add(src, offset, tmp); |
| __ move(data, new LIR_Address(tmp, (intx)0, type)); |
| } else { |
| LIR_Address* addr = new LIR_Address(src, offset, type); |
| bool is_obj = (type == T_ARRAY || type == T_OBJECT); |
| #if INCLUDE_ALL_GCS |
| if (is_obj) { |
| // Do the pre-write barrier, if any. |
| pre_barrier(LIR_OprFact::address(addr), LIR_OprFact::illegalOpr /* pre_val */, |
| true /* do_load */, false /* patch */, NULL); |
| } |
| #endif // INCLUDE_ALL_GCS |
| __ move(data, addr); |
| if (is_obj) { |
| assert(src->is_register(), "must be register"); |
| post_barrier(LIR_OprFact::address(addr), data); |
| } |
| } |
| #endif // AARCH64 |
| } |
| |
| void LIRGenerator::do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) { |
| BasicType type = x->basic_type(); |
| LIRItem src(x->object(), this); |
| LIRItem off(x->offset(), this); |
| LIRItem value(x->value(), this); |
| |
| src.load_item(); |
| if (x->is_add()) { |
| value.load_nonconstant(); |
| } else { |
| value.load_item(); |
| } |
| off.load_nonconstant(); |
| |
| LIR_Opr dst = rlock_result(x, type); |
| LIR_Opr data = value.result(); |
| bool is_obj = (type == T_ARRAY || type == T_OBJECT); |
| |
| assert (type == T_INT || type == T_LONG || (!x->is_add() && is_obj), "unexpected type"); |
| LIR_Opr addr_ptr = new_pointer_register(); |
| |
| __ add(src.result(), off.result(), addr_ptr); |
| |
| LIR_Address* addr = new LIR_Address(addr_ptr, (intx)0, type); |
| |
| if (x->is_add()) { |
| LIR_Opr tmp = new_register(type); |
| __ xadd(addr_ptr, data, dst, tmp); |
| } else { |
| LIR_Opr tmp = (UseCompressedOops && is_obj) ? new_pointer_register() : LIR_OprFact::illegalOpr; |
| if (is_obj) { |
| // Do the pre-write barrier, if any. |
| pre_barrier(LIR_OprFact::address(addr), LIR_OprFact::illegalOpr /* pre_val */, |
| true /* do_load */, false /* patch */, NULL); |
| } |
| __ xchg(addr_ptr, data, dst, tmp); |
| if (is_obj) { |
| // Seems to be a precise address |
| post_barrier(LIR_OprFact::address(addr), data); |
| } |
| } |
| } |