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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_ARM. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. |
6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
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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711 // type check runtime call is the checked value. | 711 // type check runtime call is the checked value. |
712 __ Drop(6); | 712 __ Drop(6); |
713 __ Pop(R0); | 713 __ Pop(R0); |
714 | 714 |
715 __ Bind(&is_assignable); | 715 __ Bind(&is_assignable); |
716 // Restore instantiator (R2) and its type arguments (R1). | 716 // Restore instantiator (R2) and its type arguments (R1). |
717 __ PopList((1 << R1) | (1 << R2)); | 717 __ PopList((1 << R1) | (1 << R2)); |
718 } | 718 } |
719 | 719 |
720 | 720 |
721 void FlowGraphCompiler::EmitTrySyncMove(intptr_t dest_offset, | |
722 Location loc, | |
723 bool* push_emitted) { | |
724 if (loc.IsConstant()) { | |
725 if (!*push_emitted) { | |
726 __ Push(R0); | |
727 *push_emitted = true; | |
728 } | |
729 __ LoadObject(R0, loc.constant()); | |
730 __ StoreToOffset(kWord, R0, FP, dest_offset); | |
731 } else if (loc.IsRegister()) { | |
732 if (*push_emitted && (loc.reg() == R0)) { | |
733 __ ldr(R0, Address(SP, 0)); | |
734 __ StoreToOffset(kWord, R0, FP, dest_offset); | |
735 } else { | |
736 __ StoreToOffset(kWord, loc.reg(), FP, dest_offset); | |
737 } | |
738 } else { | |
739 const intptr_t src_offset = loc.ToStackSlotOffset(); | |
740 if (src_offset != dest_offset) { | |
741 if (!*push_emitted) { | |
742 __ Push(R0); | |
743 *push_emitted = true; | |
744 } | |
745 __ LoadFromOffset(kWord, R0, FP, src_offset); | |
746 __ StoreToOffset(kWord, R0, FP, dest_offset); | |
747 } | |
748 } | |
749 } | |
750 | |
751 | |
752 void FlowGraphCompiler::EmitTrySync(Instruction* instr, intptr_t try_index) { | |
753 ASSERT(is_optimizing()); | |
754 Environment* env = instr->env(); | |
755 CatchBlockEntryInstr* catch_block = | |
756 flow_graph().graph_entry()->GetCatchEntry(try_index); | |
757 const GrowableArray<Definition*>* idefs = catch_block->initial_definitions(); | |
758 // Parameters. | |
759 intptr_t i = 0; | |
760 bool push_emitted = false; | |
761 const intptr_t num_non_copied_params = flow_graph().num_non_copied_params(); | |
762 const intptr_t param_base = | |
763 kParamEndSlotFromFp + num_non_copied_params; | |
764 for (; i < num_non_copied_params; ++i) { | |
765 if ((*idefs)[i]->IsConstant()) continue; // Common constants | |
766 Location loc = env->LocationAt(i); | |
767 EmitTrySyncMove((param_base - i) * kWordSize, loc, &push_emitted); | |
768 } | |
769 | |
770 // Process locals. Skip exception_var and stacktrace_var. | |
771 intptr_t local_base = kFirstLocalSlotFromFp + num_non_copied_params; | |
772 intptr_t ex_idx = local_base - catch_block->exception_var().index(); | |
773 intptr_t st_idx = local_base - catch_block->stacktrace_var().index(); | |
774 for (; i < flow_graph().variable_count(); ++i) { | |
775 if (i == ex_idx || i == st_idx) continue; | |
776 if ((*idefs)[i]->IsConstant()) continue; | |
777 Location loc = env->LocationAt(i); | |
778 EmitTrySyncMove((local_base - i) * kWordSize, loc, &push_emitted); | |
779 // Update safepoint bitmap to indicate that the target location | |
780 // now contains a pointer. | |
781 instr->locs()->stack_bitmap()->Set(i - num_non_copied_params, true); | |
782 } | |
783 if (push_emitted) { | |
784 __ Pop(R0); | |
785 } | |
786 } | |
787 | |
788 | |
789 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) { | 721 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) { |
790 if (is_optimizing()) return; | 722 if (is_optimizing()) return; |
791 Definition* defn = instr->AsDefinition(); | 723 Definition* defn = instr->AsDefinition(); |
792 if ((defn != NULL) && defn->is_used()) { | 724 if ((defn != NULL) && defn->is_used()) { |
793 __ Push(defn->locs()->out().reg()); | 725 __ Push(defn->locs()->out().reg()); |
794 } | 726 } |
795 } | 727 } |
796 | 728 |
797 | 729 |
798 // Input parameters: | 730 // Input parameters: |
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1885 DRegister dreg = EvenDRegisterOf(reg); | 1817 DRegister dreg = EvenDRegisterOf(reg); |
1886 __ vldrd(dreg, Address(SP, kDoubleSize, Address::PostIndex)); | 1818 __ vldrd(dreg, Address(SP, kDoubleSize, Address::PostIndex)); |
1887 } | 1819 } |
1888 | 1820 |
1889 | 1821 |
1890 #undef __ | 1822 #undef __ |
1891 | 1823 |
1892 } // namespace dart | 1824 } // namespace dart |
1893 | 1825 |
1894 #endif // defined TARGET_ARCH_ARM | 1826 #endif // defined TARGET_ARCH_ARM |
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