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Issue 1768263004: [turbofan] [deoptimizer] Support inlining of ES6 tail calls. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Addressing comments, StandardFrameConstants -> CommonFrameConstants Created 4 years, 9 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 // 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 #include "src/codegen.h" 5 #include "src/codegen.h"
6 #include "src/deoptimizer.h" 6 #include "src/deoptimizer.h"
7 #include "src/full-codegen/full-codegen.h" 7 #include "src/full-codegen/full-codegen.h"
8 #include "src/register-configuration.h" 8 #include "src/register-configuration.h"
9 #include "src/safepoint-table.h" 9 #include "src/safepoint-table.h"
10 10
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230 // a0: deoptimizer object; a1: scratch. 230 // a0: deoptimizer object; a1: scratch.
231 __ PrepareCallCFunction(1, a1); 231 __ PrepareCallCFunction(1, a1);
232 // Call Deoptimizer::ComputeOutputFrames(). 232 // Call Deoptimizer::ComputeOutputFrames().
233 { 233 {
234 AllowExternalCallThatCantCauseGC scope(masm()); 234 AllowExternalCallThatCantCauseGC scope(masm());
235 __ CallCFunction( 235 __ CallCFunction(
236 ExternalReference::compute_output_frames_function(isolate()), 1); 236 ExternalReference::compute_output_frames_function(isolate()), 1);
237 } 237 }
238 __ pop(a0); // Restore deoptimizer object (class Deoptimizer). 238 __ pop(a0); // Restore deoptimizer object (class Deoptimizer).
239 239
240 __ ld(sp, MemOperand(a0, Deoptimizer::caller_frame_top_offset()));
241
240 // Replace the current (input) frame with the output frames. 242 // Replace the current (input) frame with the output frames.
241 Label outer_push_loop, inner_push_loop, 243 Label outer_push_loop, inner_push_loop,
242 outer_loop_header, inner_loop_header; 244 outer_loop_header, inner_loop_header;
243 // Outer loop state: a4 = current "FrameDescription** output_", 245 // Outer loop state: a4 = current "FrameDescription** output_",
244 // a1 = one past the last FrameDescription**. 246 // a1 = one past the last FrameDescription**.
245 __ lw(a1, MemOperand(a0, Deoptimizer::output_count_offset())); 247 __ lw(a1, MemOperand(a0, Deoptimizer::output_count_offset()));
246 __ ld(a4, MemOperand(a0, Deoptimizer::output_offset())); // a4 is output_. 248 __ ld(a4, MemOperand(a0, Deoptimizer::output_offset())); // a4 is output_.
247 __ Dlsa(a1, a4, a1, kPointerSizeLog2); 249 __ Dlsa(a1, a4, a1, kPointerSizeLog2);
248 __ BranchShort(&outer_loop_header); 250 __ BranchShort(&outer_loop_header);
249 __ bind(&outer_push_loop); 251 __ bind(&outer_push_loop);
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380 // No embedded constant pool support. 382 // No embedded constant pool support.
381 UNREACHABLE(); 383 UNREACHABLE();
382 } 384 }
383 385
384 386
385 #undef __ 387 #undef __
386 388
387 389
388 } // namespace internal 390 } // namespace internal
389 } // namespace v8 391 } // namespace v8
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