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Issue 1272673003: [es6] Re-implement rest parameters via desugaring. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Use else-if (and rebase, sorry) Created 5 years, 3 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #if V8_TARGET_ARCH_X64 5 #if V8_TARGET_ARCH_X64
6 6
7 #include "src/code-factory.h" 7 #include "src/code-factory.h"
8 #include "src/code-stubs.h" 8 #include "src/code-stubs.h"
9 #include "src/codegen.h" 9 #include "src/codegen.h"
10 #include "src/compiler.h" 10 #include "src/compiler.h"
(...skipping 252 matching lines...) Expand 10 before | Expand all | Expand 10 after
263 __ jmp(&done); 263 __ jmp(&done);
264 264
265 // Non-construct frame 265 // Non-construct frame
266 __ bind(&non_construct_frame); 266 __ bind(&non_construct_frame);
267 __ LoadRoot(rax, Heap::kUndefinedValueRootIndex); 267 __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
268 268
269 __ bind(&done); 269 __ bind(&done);
270 SetVar(new_target_var, rax, rbx, rdx); 270 SetVar(new_target_var, rax, rbx, rdx);
271 } 271 }
272 272
273 // Possibly allocate RestParameters
274 int rest_index;
275 Variable* rest_param = scope()->rest_parameter(&rest_index);
276 if (rest_param) {
277 Comment cmnt(masm_, "[ Allocate rest parameter array");
278
279 int num_parameters = info->scope()->num_parameters();
280 int offset = num_parameters * kPointerSize;
281
282 __ leap(rdx,
283 Operand(rbp, StandardFrameConstants::kCallerSPOffset + offset));
284 __ Push(rdx);
285 __ Push(Smi::FromInt(num_parameters));
286 __ Push(Smi::FromInt(rest_index));
287 __ Push(Smi::FromInt(language_mode()));
288
289 RestParamAccessStub stub(isolate());
290 __ CallStub(&stub);
291
292 SetVar(rest_param, rax, rbx, rdx);
293 }
294
295 // Possibly allocate an arguments object. 273 // Possibly allocate an arguments object.
296 Variable* arguments = scope()->arguments(); 274 Variable* arguments = scope()->arguments();
297 if (arguments != NULL) { 275 if (arguments != NULL) {
298 // Arguments object must be allocated after the context object, in 276 // Arguments object must be allocated after the context object, in
299 // case the "arguments" or ".arguments" variables are in the context. 277 // case the "arguments" or ".arguments" variables are in the context.
300 Comment cmnt(masm_, "[ Allocate arguments object"); 278 Comment cmnt(masm_, "[ Allocate arguments object");
301 if (function_in_register) { 279 if (function_in_register) {
302 __ Push(rdi); 280 __ Push(rdi);
303 } else { 281 } else {
304 __ Push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); 282 __ Push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
(...skipping 4953 matching lines...) Expand 10 before | Expand all | Expand 10 after
5258 Assembler::target_address_at(call_target_address, 5236 Assembler::target_address_at(call_target_address,
5259 unoptimized_code)); 5237 unoptimized_code));
5260 return OSR_AFTER_STACK_CHECK; 5238 return OSR_AFTER_STACK_CHECK;
5261 } 5239 }
5262 5240
5263 5241
5264 } // namespace internal 5242 } // namespace internal
5265 } // namespace v8 5243 } // namespace v8
5266 5244
5267 #endif // V8_TARGET_ARCH_X64 5245 #endif // V8_TARGET_ARCH_X64
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