Record statement positions for the debugger in the fast code generator.

src/x64/fast-codegen-x64.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 33 matching lines @@
 // The live registers are:
 //   o rdi: the JS function object being called (ie, ourselves)
 //   o rsi: our context
 //   o rbp: our caller's frame pointer
 //   o rsp: stack pointer (pointing to return address)
 //
 // The function builds a JS frame.  Please see JavaScriptFrameConstants in
 // frames-x64.h for its layout.
 void FastCodeGenerator::Generate(FunctionLiteral* fun) {
   function_ = fun;
+  SetFunctionPosition(fun);
 
   __ push(rbp);  // Caller's frame pointer.
   __ movq(rbp, rsp);
   __ push(rsi);  // Callee's context.
   __ push(rdi);  // Callee's JS Function.
 
   { Comment cmnt(masm_, "[ Allocate locals");
     int locals_count = fun->scope()->num_stack_slots();
     for (int i = 0; i < locals_count; i++) {
       __ PushRoot(Heap::kUndefinedValueRootIndex);
@@ skipping 10 matching lines @@
   }
 
   { Comment cmnt(masm_, "[ Body");
     VisitStatements(fun->body());
   }
 
   { Comment cmnt(masm_, "[ return <undefined>;");
     // Emit a 'return undefined' in case control fell off the end of the
     // body.
     __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
+    SetReturnPosition(fun);
     __ RecordJSReturn();
     // Do not use the leave instruction here because it is too short to
     // patch with the code required by the debugger.
     __ movq(rsp, rbp);
     __ pop(rbp);
     __ ret((fun->scope()->num_parameters() + 1) * kPointerSize);
 #ifdef ENABLE_DEBUGGER_SUPPORT
     // Add padding that will be overwritten by a debugger breakpoint.  We
     // have just generated "movq rsp, rbp; pop rbp; ret k" with length 7
     // (3 + 1 + 3).
     const int kPadding = Debug::kX64JSReturnSequenceLength - 7;
     for (int i = 0; i < kPadding; ++i) {
       masm_->int3();
     }
 #endif
   }
 }
 
 
 void FastCodeGenerator::VisitExpressionStatement(ExpressionStatement* stmt) {
   Comment cmnt(masm_, "[ ExpressionStatement");
+  SetStatementPosition(stmt);
   Visit(stmt->expression());
   __ pop(rax);
 }
 
 
 void FastCodeGenerator::VisitReturnStatement(ReturnStatement* stmt) {
   Comment cmnt(masm_, "[ ReturnStatement");
+  SetStatementPosition(stmt);
   Visit(stmt->expression());
   __ pop(rax);
   __ RecordJSReturn();
   // Do not use the leave instruction here because it is too short to
   // patch with the code required by the debugger.
   __ movq(rsp, rbp);
   __ pop(rbp);
   __ ret((function_->scope()->num_parameters() + 1) * kPointerSize);
 #ifdef ENABLE_DEBUGGER_SUPPORT
   // Add padding that will be overwritten by a debugger breakpoint.  We
@@ skipping 26 matching lines @@
   Visit(expr->value());
 
   Variable* var = expr->target()->AsVariableProxy()->AsVariable();
   ASSERT(var != NULL && var->slot() != NULL);
   __ movq(rax, Operand(rsp, 0));
   __ movq(Operand(rbp, SlotOffset(var->slot())), rax);
 }
 
 
 } }  // namespace v8::internal