Enable stub generation using Hydrogen/Lithium (again)

src/x64/deoptimizer-x64.cc

 // Copyright 2012 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 441 matching lines @@
   Builtins* builtins = isolate_->builtins();
   Code* adaptor_trampoline =
       builtins->builtin(Builtins::kArgumentsAdaptorTrampoline);
   intptr_t pc_value = reinterpret_cast<intptr_t>(
       adaptor_trampoline->instruction_start() +
       isolate_->heap()->arguments_adaptor_deopt_pc_offset()->value());
   output_frame->SetPc(pc_value);
 }
 
 
+void Deoptimizer::DoCompiledStubPseudoFrame(TranslationIterator* iterator,
+                                            int frame_index) {
+  //  Builtins* builtins = isolate_->builtins();
+  //  Code::Kind stub_kind = static_cast<Code::Kind>(iterator->Next());
+  FrameDescription* output_frame = new(0) FrameDescription(0, 0);
+  Code* continuation =
+      isolate_->builtins()->builtin(Builtins::kNotifyICMiss);
+  output_frame->SetState(Smi::FromInt(FullCodeGenerator::NO_REGISTERS));
+  output_frame->SetContinuation(
+      reinterpret_cast<uintptr_t>(continuation->entry()));
+  Handle<Code> miss_ic = isolate_->builtins()->KeyedLoadIC_Miss();
+  output_frame->SetPc(
+      reinterpret_cast<intptr_t>(miss_ic->instruction_start()));
+
+  Code::Kind stub_kind = static_cast<Code::Kind>(iterator->Next());
+  ASSERT(stub_kind == Code::KEYED_LOAD_IC);
+  USE(stub_kind);
+
+  Translation::Opcode opcode =
+      static_cast<Translation::Opcode>(iterator->Next());
+  ASSERT(opcode == Translation::REGISTER);
+  USE(opcode);
+  int input_reg = iterator->Next();
+  intptr_t input_value = input_->GetRegister(input_reg);
+  output_frame->SetRegister(rdx.code(), input_value);
+
+  int32_t next = iterator->Next();
+  opcode = static_cast<Translation::Opcode>(next);
+  ASSERT(opcode == Translation::REGISTER);
+  input_reg = iterator->Next();
+  input_value = input_->GetRegister(input_reg);
+  output_frame->SetRegister(rax.code(), input_value);
+
+  Address frame_ptr =
+      reinterpret_cast<Address>(input_->GetRegister(rbp.code()));
+  Address context_ptr_raw = frame_ptr + StandardFrameConstants::kContextOffset;
+  Context** context_ptr =
+      reinterpret_cast<Context**>(context_ptr_raw);
+  output_frame->SetRegister(rsi.code(),
+                            reinterpret_cast<intptr_t>(*context_ptr));
+  output_frame->SetRegister(rbp.code(), reinterpret_cast<intptr_t>(frame_ptr));
+
+  ASSERT(frame_index == 0);
+  output_[frame_index] = output_frame;
+}
+
+
 void Deoptimizer::DoComputeConstructStubFrame(TranslationIterator* iterator,
                                               int frame_index) {
   Builtins* builtins = isolate_->builtins();
   Code* construct_stub = builtins->builtin(Builtins::kJSConstructStubGeneric);
   JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next()));
   unsigned height = iterator->Next();
   unsigned height_in_bytes = height * kPointerSize;
   if (FLAG_trace_deopt) {
     PrintF("  translating construct stub => height=%d\n", height_in_bytes);
   }
@@ skipping 399 matching lines @@
 
 void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) {
   // Set the register values. The values are not important as there are no
   // callee saved registers in JavaScript frames, so all registers are
   // spilled. Registers rbp and rsp are set to the correct values though.
   for (int i = 0; i < Register::kNumRegisters; i++) {
     input_->SetRegister(i, i * 4);
   }
   input_->SetRegister(rsp.code(), reinterpret_cast<intptr_t>(frame->sp()));
   input_->SetRegister(rbp.code(), reinterpret_cast<intptr_t>(frame->fp()));
-  for (int i = 0; i < DoubleRegister::kNumAllocatableRegisters; i++) {
+  for (int i = 0; i < DoubleRegister::NumAllocatableRegisters(); i++) {
     input_->SetDoubleRegister(i, 0.0);
   }
 
   // Fill the frame content from the actual data on the frame.
   for (unsigned i = 0; i < input_->GetFrameSize(); i += kPointerSize) {
     input_->SetFrameSlot(i, Memory::uint64_at(tos + i));
   }
 }
 
 
 #define __ masm()->
 
 void Deoptimizer::EntryGenerator::Generate() {
   GeneratePrologue();
 
   // Save all general purpose registers before messing with them.
   const int kNumberOfRegisters = Register::kNumRegisters;
 
   const int kDoubleRegsSize = kDoubleSize *
-                              XMMRegister::kNumAllocatableRegisters;
+      XMMRegister::NumAllocatableRegisters();
   __ subq(rsp, Immediate(kDoubleRegsSize));
 
-  for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; ++i) {
+  for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) {
     XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i);
     int offset = i * kDoubleSize;
     __ movsd(Operand(rsp, offset), xmm_reg);
   }
 
   // We push all registers onto the stack, even though we do not need
   // to restore all later.
   for (int i = 0; i < kNumberOfRegisters; i++) {
     Register r = Register::from_code(i);
     __ push(r);
@@ skipping 68 matching lines @@
   __ movq(rbx, Operand(rax, Deoptimizer::input_offset()));
 
   // Fill in the input registers.
   for (int i = kNumberOfRegisters -1; i >= 0; i--) {
     int offset = (i * kPointerSize) + FrameDescription::registers_offset();
     __ pop(Operand(rbx, offset));
   }
 
   // Fill in the double input registers.
   int double_regs_offset = FrameDescription::double_registers_offset();
-  for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) {
+  for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) {
     int dst_offset = i * kDoubleSize + double_regs_offset;
     __ pop(Operand(rbx, dst_offset));
   }
 
   // Remove the bailout id from the stack.
   if (type() == EAGER) {
     __ addq(rsp, Immediate(kPointerSize));
   } else {
     __ addq(rsp, Immediate(2 * kPointerSize));
   }
 
   // Compute a pointer to the unwinding limit in register rcx; that is
   // the first stack slot not part of the input frame.
   __ movq(rcx, Operand(rbx, FrameDescription::frame_size_offset()));
   __ addq(rcx, rsp);
 
   // Unwind the stack down to - but not including - the unwinding
   // limit and copy the contents of the activation frame to the input
   // frame description.
   __ lea(rdx, Operand(rbx, FrameDescription::frame_content_offset()));
+  Label pop_loop_header;
+  __ jmp(&pop_loop_header);
   Label pop_loop;
   __ bind(&pop_loop);
   __ pop(Operand(rdx, 0));
   __ addq(rdx, Immediate(sizeof(intptr_t)));
+  __ bind(&pop_loop_header);
   __ cmpq(rcx, rsp);
   __ j(not_equal, &pop_loop);
 
   // Compute the output frame in the deoptimizer.
   __ push(rax);
   __ PrepareCallCFunction(2);
   __ movq(arg1, rax);
   __ LoadAddress(arg2, ExternalReference::isolate_address());
   {
     AllowExternalCallThatCantCauseGC scope(masm());
     __ CallCFunction(
         ExternalReference::compute_output_frames_function(isolate), 2);
   }
   __ pop(rax);
 
   // Replace the current frame with the output frames.
-  Label outer_push_loop, inner_push_loop;
+  Label outer_push_loop, inner_push_loop,
+      outer_loop_header, inner_loop_header;
   // Outer loop state: rax = current FrameDescription**, rdx = one past the
   // last FrameDescription**.
   __ movl(rdx, Operand(rax, Deoptimizer::output_count_offset()));
   __ movq(rax, Operand(rax, Deoptimizer::output_offset()));
   __ lea(rdx, Operand(rax, rdx, times_8, 0));
+  __ jmp(&outer_loop_header);
   __ bind(&outer_push_loop);
   // Inner loop state: rbx = current FrameDescription*, rcx = loop index.
   __ movq(rbx, Operand(rax, 0));
   __ movq(rcx, Operand(rbx, FrameDescription::frame_size_offset()));
+  __ jmp(&inner_loop_header);
   __ bind(&inner_push_loop);
   __ subq(rcx, Immediate(sizeof(intptr_t)));
   __ push(Operand(rbx, rcx, times_1, FrameDescription::frame_content_offset()));
+  __ bind(&inner_loop_header);
   __ testq(rcx, rcx);
   __ j(not_zero, &inner_push_loop);
   __ addq(rax, Immediate(kPointerSize));
+  __ bind(&outer_loop_header);
   __ cmpq(rax, rdx);
   __ j(below, &outer_push_loop);
 
   // In case of OSR, we have to restore the XMM registers.
   if (type() == OSR) {
-    for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; ++i) {
+    for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) {
       XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i);
       int src_offset = i * kDoubleSize + double_regs_offset;
       __ movsd(xmm_reg, Operand(rbx, src_offset));
     }
   }
 
   // Push state, pc, and continuation from the last output frame.
   if (type() != OSR) {
     __ push(Operand(rbx, FrameDescription::state_offset()));
   }
@@ skipping 39 matching lines @@
   }
   __ bind(&done);
 }
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64