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Issue 7523027: Provisional implementation of stack allocated catch variables. Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 4 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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981 return; 981 return;
982 } 982 }
983 if (is_optimized()) { 983 if (is_optimized()) {
984 accumulator->Add(" {\n// optimized frame\n}\n"); 984 accumulator->Add(" {\n// optimized frame\n}\n");
985 return; 985 return;
986 } 986 }
987 accumulator->Add(" {\n"); 987 accumulator->Add(" {\n");
988 988
989 // Compute the number of locals and expression stack elements. 989 // Compute the number of locals and expression stack elements.
990 int stack_locals_count = info.number_of_stack_slots(); 990 int stack_locals_count = info.number_of_stack_slots();
991 int first_stack_index = info.first_stack_index();
991 int heap_locals_count = info.number_of_context_slots(); 992 int heap_locals_count = info.number_of_context_slots();
992 int expressions_count = ComputeExpressionsCount(); 993 int expressions_count = ComputeExpressionsCount();
993 994
994 // Print stack-allocated local variables. 995 // Print stack-allocated local variables.
995 if (stack_locals_count > 0) { 996 if (stack_locals_count > 0) {
996 accumulator->Add(" // stack-allocated locals\n"); 997 accumulator->Add(" // stack-allocated locals\n");
997 } 998 }
998 for (int i = 0; i < stack_locals_count; i++) { 999 for (int i = 0; i < stack_locals_count; i++) {
999 accumulator->Add(" var "); 1000 accumulator->Add(" var ");
1000 accumulator->PrintName(*info.stack_slot_name(i)); 1001 accumulator->PrintName(*info.stack_slot_name(i));
1001 accumulator->Add(" = "); 1002 accumulator->Add(" = ");
1002 if (i < expressions_count) { 1003 if (i + first_stack_index < expressions_count) {
1003 accumulator->Add("%o", GetExpression(i)); 1004 accumulator->Add("%o", GetExpression(i + first_stack_index));
1004 } else { 1005 } else {
1005 accumulator->Add("// no expression found - inconsistent frame?"); 1006 accumulator->Add("// no expression found - inconsistent frame?");
1006 } 1007 }
1007 accumulator->Add("\n"); 1008 accumulator->Add("\n");
1008 } 1009 }
1009 1010
1010 // Try to get hold of the context of this frame. 1011 // Try to get hold of the context of this frame.
1011 Context* context = NULL; 1012 Context* context = NULL;
1012 if (this->context() != NULL && this->context()->IsContext()) { 1013 if (this->context() != NULL && this->context()->IsContext()) {
1013 context = Context::cast(this->context()); 1014 context = Context::cast(this->context());
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1270 ZoneList<StackFrame*> list(10); 1271 ZoneList<StackFrame*> list(10);
1271 for (StackFrameIterator it; !it.done(); it.Advance()) { 1272 for (StackFrameIterator it; !it.done(); it.Advance()) {
1272 StackFrame* frame = AllocateFrameCopy(it.frame()); 1273 StackFrame* frame = AllocateFrameCopy(it.frame());
1273 list.Add(frame); 1274 list.Add(frame);
1274 } 1275 }
1275 return list.ToVector(); 1276 return list.ToVector();
1276 } 1277 }
1277 1278
1278 1279
1279 } } // namespace v8::internal 1280 } } // namespace v8::internal
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