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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. |
6 #if defined(TARGET_ARCH_X64) | 6 #if defined(TARGET_ARCH_X64) |
7 | 7 |
8 #include "vm/flow_graph_compiler.h" | 8 #include "vm/flow_graph_compiler.h" |
9 | 9 |
10 #include "vm/ast_printer.h" | 10 #include "vm/ast_printer.h" |
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715 // type check runtime call is the checked value. | 715 // type check runtime call is the checked value. |
716 __ Drop(6); | 716 __ Drop(6); |
717 __ popq(RAX); | 717 __ popq(RAX); |
718 | 718 |
719 __ Bind(&is_assignable); | 719 __ Bind(&is_assignable); |
720 __ popq(RDX); // Remove pushed instantiator type arguments. | 720 __ popq(RDX); // Remove pushed instantiator type arguments. |
721 __ popq(RCX); // Remove pushed instantiator. | 721 __ popq(RCX); // Remove pushed instantiator. |
722 } | 722 } |
723 | 723 |
724 | 724 |
725 void FlowGraphCompiler::EmitTrySyncMove(intptr_t dest_offset, | |
726 Location loc, | |
727 bool* push_emitted) { | |
728 const Address dest(RBP, dest_offset); | |
729 if (loc.IsConstant()) { | |
730 if (!*push_emitted) { | |
731 __ pushq(RAX); | |
732 *push_emitted = true; | |
733 } | |
734 __ LoadObject(RAX, loc.constant(), PP); | |
735 __ movq(dest, RAX); | |
736 } else if (loc.IsRegister()) { | |
737 if (*push_emitted && loc.reg() == RAX) { | |
738 __ movq(RAX, Address(RSP, 0)); | |
739 __ movq(dest, RAX); | |
740 } else { | |
741 __ movq(dest, loc.reg()); | |
742 } | |
743 } else { | |
744 Address src = loc.ToStackSlotAddress(); | |
745 if (!src.Equals(dest)) { | |
746 if (!*push_emitted) { | |
747 __ pushq(RAX); | |
748 *push_emitted = true; | |
749 } | |
750 __ movq(RAX, src); | |
751 __ movq(dest, RAX); | |
752 } | |
753 } | |
754 } | |
755 | |
756 | |
757 void FlowGraphCompiler::EmitTrySync(Instruction* instr, intptr_t try_index) { | |
758 ASSERT(is_optimizing()); | |
759 Environment* env = instr->env(); | |
760 CatchBlockEntryInstr* catch_block = | |
761 flow_graph().graph_entry()->GetCatchEntry(try_index); | |
762 const GrowableArray<Definition*>* idefs = catch_block->initial_definitions(); | |
763 // Parameters. | |
764 intptr_t i = 0; | |
765 bool push_emitted = false; | |
766 const intptr_t num_non_copied_params = flow_graph().num_non_copied_params(); | |
767 const intptr_t param_base = kParamEndSlotFromFp + num_non_copied_params; | |
768 for (; i < num_non_copied_params; ++i) { | |
769 if ((*idefs)[i]->IsConstant()) continue; // Common constants | |
770 Location loc = env->LocationAt(i); | |
771 EmitTrySyncMove((param_base - i) * kWordSize, loc, &push_emitted); | |
772 } | |
773 | |
774 // Process locals. Skip exception_var and stacktrace_var. | |
775 intptr_t local_base = kFirstLocalSlotFromFp + num_non_copied_params; | |
776 intptr_t ex_idx = local_base - catch_block->exception_var().index(); | |
777 intptr_t st_idx = local_base - catch_block->stacktrace_var().index(); | |
778 for (; i < flow_graph().variable_count(); ++i) { | |
779 if (i == ex_idx || i == st_idx) continue; | |
780 if ((*idefs)[i]->IsConstant()) continue; | |
781 Location loc = env->LocationAt(i); | |
782 EmitTrySyncMove((local_base - i) * kWordSize, loc, &push_emitted); | |
783 // Update safepoint bitmap to indicate that the target location | |
784 // now contains a pointer. | |
785 instr->locs()->stack_bitmap()->Set(i - num_non_copied_params, true); | |
786 } | |
787 if (push_emitted) { | |
788 __ popq(RAX); | |
789 } | |
790 } | |
791 | |
792 | |
793 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) { | 725 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) { |
794 if (is_optimizing()) return; | 726 if (is_optimizing()) return; |
795 Definition* defn = instr->AsDefinition(); | 727 Definition* defn = instr->AsDefinition(); |
796 if ((defn != NULL) && defn->is_used()) { | 728 if ((defn != NULL) && defn->is_used()) { |
797 __ pushq(defn->locs()->out().reg()); | 729 __ pushq(defn->locs()->out().reg()); |
798 } | 730 } |
799 } | 731 } |
800 | 732 |
801 | 733 |
802 void FlowGraphCompiler::CopyParameters() { | 734 void FlowGraphCompiler::CopyParameters() { |
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1907 __ movups(reg, Address(RSP, 0)); | 1839 __ movups(reg, Address(RSP, 0)); |
1908 __ AddImmediate(RSP, Immediate(kFpuRegisterSize), PP); | 1840 __ AddImmediate(RSP, Immediate(kFpuRegisterSize), PP); |
1909 } | 1841 } |
1910 | 1842 |
1911 | 1843 |
1912 #undef __ | 1844 #undef __ |
1913 | 1845 |
1914 } // namespace dart | 1846 } // namespace dart |
1915 | 1847 |
1916 #endif // defined TARGET_ARCH_X64 | 1848 #endif // defined TARGET_ARCH_X64 |
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