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Issue 1992003: Allocate the right number of fast context slots on X64. Ported from ia32.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 10 years, 7 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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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184 184
185 if (info->mode() == CompilationInfo::PRIMARY) { 185 if (info->mode() == CompilationInfo::PRIMARY) {
186 frame_->Enter(); 186 frame_->Enter();
187 // tos: code slot 187 // tos: code slot
188 188
189 // Allocate space for locals and initialize them. This also checks 189 // Allocate space for locals and initialize them. This also checks
190 // for stack overflow. 190 // for stack overflow.
191 frame_->AllocateStackSlots(); 191 frame_->AllocateStackSlots();
192 192
193 VirtualFrame::SpilledScope spilled_scope(frame_); 193 VirtualFrame::SpilledScope spilled_scope(frame_);
194 int heap_slots = scope()->num_heap_slots(); 194 int heap_slots = scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
195 if (heap_slots > 0) { 195 if (heap_slots > 0) {
196 // Allocate local context. 196 // Allocate local context.
197 // Get outer context and create a new context based on it. 197 // Get outer context and create a new context based on it.
198 __ ldr(r0, frame_->Function()); 198 __ ldr(r0, frame_->Function());
199 frame_->EmitPush(r0); 199 frame_->EmitPush(r0);
200 if (heap_slots <= FastNewContextStub::kMaximumSlots) { 200 if (heap_slots <= FastNewContextStub::kMaximumSlots) {
201 FastNewContextStub stub(heap_slots); 201 FastNewContextStub stub(heap_slots);
202 frame_->CallStub(&stub, 1); 202 frame_->CallStub(&stub, 1);
203 } else { 203 } else {
204 frame_->CallRuntime(Runtime::kNewContext, 1); 204 frame_->CallRuntime(Runtime::kNewContext, 1);
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9901 9901
9902 // Just jump to runtime to add the two strings. 9902 // Just jump to runtime to add the two strings.
9903 __ bind(&string_add_runtime); 9903 __ bind(&string_add_runtime);
9904 __ TailCallRuntime(Runtime::kStringAdd, 2, 1); 9904 __ TailCallRuntime(Runtime::kStringAdd, 2, 1);
9905 } 9905 }
9906 9906
9907 9907
9908 #undef __ 9908 #undef __
9909 9909
9910 } } // namespace v8::internal 9910 } } // namespace v8::internal
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