Fix deoptimization at ForInStatement::BodyId()

src/full-codegen/x64/full-codegen-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
@@ skipping 1079 matching lines @@
   __ j(above, &non_proxy);
   __ Move(rbx, Smi::FromInt(0));  // Zero indicates proxy
   __ bind(&non_proxy);
   __ Push(rbx);  // Smi
   __ Push(rax);  // Array
   __ movp(rax, FieldOperand(rax, FixedArray::kLengthOffset));
   __ Push(rax);  // Fixed array length (as smi).
   __ Push(Smi::FromInt(0));  // Initial index.
 
   // Generate code for doing the condition check.
-  PrepareForBailoutForId(stmt->BodyId(), NO_REGISTERS);
   __ bind(&loop);
   SetExpressionAsStatementPosition(stmt->each());
 
   __ movp(rax, Operand(rsp, 0 * kPointerSize));  // Get the current index.
   __ cmpp(rax, Operand(rsp, 1 * kPointerSize));  // Compare to the array length.
   __ j(above_equal, loop_statement.break_label());
 
   // Get the current entry of the array into register rbx.
   __ movp(rbx, Operand(rsp, 2 * kPointerSize));
   SmiIndex index = masm()->SmiToIndex(rax, rax, kPointerSizeLog2);
@@ skipping 32 matching lines @@
   // Update the 'each' property or variable from the possibly filtered
   // entry in register rbx.
   __ bind(&update_each);
   __ movp(result_register(), rbx);
   // Perform the assignment as if via '='.
   { EffectContext context(this);
     EmitAssignment(stmt->each(), stmt->EachFeedbackSlot());
     PrepareForBailoutForId(stmt->AssignmentId(), NO_REGISTERS);
   }
 
+  // Both Crankshaft and Turbofan expect BodyId to be right before stmt->body().
+  PrepareForBailoutForId(stmt->BodyId(), NO_REGISTERS);
   // Generate code for the body of the loop.
   Visit(stmt->body());
 
   // Generate code for going to the next element by incrementing the
   // index (smi) stored on top of the stack.
   __ bind(loop_statement.continue_label());
   __ SmiAddConstant(Operand(rsp, 0 * kPointerSize), Smi::FromInt(1));
 
   EmitBackEdgeBookkeeping(stmt, &loop);
   __ jmp(&loop);
@@ skipping 3913 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64