[Interpreter] Support compiling for baseline on return from interpreted function.

src/mips/builtins-mips.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_MIPS
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 934 matching lines @@
     __ lw(a2, FieldMemOperand(a1, JSGeneratorObject::kContinuationOffset));
     __ SmiUntag(a2);
     __ Addu(a3, a3, Operand(a2));
     __ li(a2, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorExecuting)));
     __ sw(a2, FieldMemOperand(a1, JSGeneratorObject::kContinuationOffset));
     __ Move(v0, a1);  // Continuation expects generator object in v0.
     __ Jump(a3);
   }
 }
 
+static void LeaveInterpreterFrame(MacroAssembler* masm, Register scratch) {
+  Register args_count = scratch;
+
+  // Get the arguments + receiver count.
+  __ lw(args_count,
+        MemOperand(fp, InterpreterFrameConstants::kBytecodeArrayFromFp));
+  __ lw(args_count,
+        FieldMemOperand(args_count, BytecodeArray::kParameterSizeOffset));
+
+  // Leave the frame (also dropping the register file).
+  __ LeaveFrame(StackFrame::JAVA_SCRIPT);
+
+  // Drop receiver + arguments.
+  __ Addu(sp, sp, args_count);
+}
+
 // Generate code for entering a JS function with the interpreter.
 // On entry to the function the receiver and arguments have been pushed on the
 // stack left to right.  The actual argument count matches the formal parameter
 // count expected by the function.
 //
 // The live registers are:
 //   o a1: the JS function object being called.
 //   o a3: the new target
 //   o cp: our context
 //   o fp: the caller's frame pointer
@@ skipping 82 matching lines @@
   // Dispatch to the first bytecode handler for the function.
   __ Addu(a0, kInterpreterBytecodeArrayRegister,
           kInterpreterBytecodeOffsetRegister);
   __ lbu(a0, MemOperand(a0));
   __ Lsa(at, kInterpreterDispatchTableRegister, a0, kPointerSizeLog2);
   __ lw(at, MemOperand(at));
   __ Call(at);
   masm->isolate()->heap()->SetInterpreterEntryReturnPCOffset(masm->pc_offset());
 
   // The return value is in v0.
-
-  // Get the arguments + reciever count.
-  __ lw(t0, MemOperand(fp, InterpreterFrameConstants::kBytecodeArrayFromFp));
-  __ lw(t0, FieldMemOperand(t0, BytecodeArray::kParameterSizeOffset));
-
-  // Leave the frame (also dropping the register file).
-  __ LeaveFrame(StackFrame::JAVA_SCRIPT);
-
-  // Drop receiver + arguments and return.
-  __ Addu(sp, sp, t0);
+  LeaveInterpreterFrame(masm, t0);
   __ Jump(ra);
 
   // Load debug copy of the bytecode array.
   __ bind(&load_debug_bytecode_array);
   __ lw(kInterpreterBytecodeArrayRegister,
         FieldMemOperand(debug_info, DebugInfo::kAbstractCodeIndex));
   __ Branch(&bytecode_array_loaded);
 
   // If the bytecode array is no longer present, then the underlying function
   // has been switched to a different kind of code and we heal the closure by
   // switching the code entry field over to the new code object as well.
   __ bind(&bytecode_array_not_present);
   __ LeaveFrame(StackFrame::JAVA_SCRIPT);
   __ lw(t0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
   __ lw(t0, FieldMemOperand(t0, SharedFunctionInfo::kCodeOffset));
   __ Addu(t0, t0, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ sw(t0, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
   __ RecordWriteCodeEntryField(a1, t0, t1);
   __ Jump(t0);
 }
 
+void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
+  // Save the function and context for call to CompileBaseline.
+  __ lw(a1, MemOperand(fp, StandardFrameConstants::kFunctionOffset));
+  __ lw(kContextRegister,
+        MemOperand(fp, StandardFrameConstants::kContextOffset));
+
+  // Leave the frame before recompiling for baseline so that we don't count as
+  // an activation on the stack.
+  LeaveInterpreterFrame(masm, t0);
+
+  {
+    FrameScope frame_scope(masm, StackFrame::INTERNAL);
+    // Push return value.
+    __ push(v0);
+
+    // Push function as argument and compile for baseline.
+    __ push(a1);
+    __ CallRuntime(Runtime::kCompileBaseline);
+
+    // Restore return value.
+    __ pop(v0);
+  }
+  __ Jump(ra);
+}
+
 // static
 void Builtins::Generate_InterpreterPushArgsAndCallImpl(
     MacroAssembler* masm, TailCallMode tail_call_mode) {
   // ----------- S t a t e -------------
   //  -- a0 : the number of arguments (not including the receiver)
   //  -- a2 : the address of the first argument to be pushed. Subsequent
   //          arguments should be consecutive above this, in the same order as
   //          they are to be pushed onto the stack.
   //  -- a1 : the target to call (can be any Object).
   // -----------------------------------
@@ skipping 1730 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS