X87: [Interpreter] Add basic deoptimization support from TurboFan to Ignition.

src/x87/builtins-x87.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_X87
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 585 matching lines @@
   __ mov(kInterpreterRegisterFileRegister, ebp);
   __ add(kInterpreterRegisterFileRegister,
          Immediate(InterpreterFrameConstants::kRegisterFilePointerFromFp));
   __ mov(kInterpreterBytecodeOffsetRegister,
          Immediate(BytecodeArray::kHeaderSize - kHeapObjectTag));
   // Since the dispatch table root might be set after builtins are generated,
   // load directly from the roots table.
   __ LoadRoot(ebx, Heap::kInterpreterTableRootIndex);
   __ add(ebx, Immediate(FixedArray::kHeaderSize - kHeapObjectTag));
 
-  // Push context as a stack located parameter to the bytecode handler.
+  // Push dispatch table as a stack located parameter to the bytecode handler.
   DCHECK_EQ(-1, kInterpreterDispatchTableSpillSlot);
   __ push(ebx);
 
   // Dispatch to the first bytecode handler for the function.
   __ movzx_b(eax, Operand(kInterpreterBytecodeArrayRegister,
                           kInterpreterBytecodeOffsetRegister, times_1, 0));
   __ mov(ebx, Operand(ebx, eax, times_pointer_size, 0));
   // Restore undefined_value in accumulator (eax)
   // TODO(rmcilroy): Remove this once we move the dispatch table back into a
   // register.
@@ skipping 109 matching lines @@
   __ mov(eax, Operand(esp, -kPointerSize));
 
   // Re-push return address.
   __ Push(ecx);
 
   // Call the constructor with unmodified eax, edi, ebi values.
   __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
 }
 
 
+static void Generate_InterpreterNotifyDeoptimizedHelper(
+    MacroAssembler* masm, Deoptimizer::BailoutType type) {
+  // Enter an internal frame.
+  {
+    FrameScope scope(masm, StackFrame::INTERNAL);
+    __ Push(kInterpreterAccumulatorRegister);  // Save accumulator register.
+
+    // Pass the deoptimization type to the runtime system.
+    __ Push(Smi::FromInt(static_cast<int>(type)));
+
+    __ CallRuntime(Runtime::kNotifyDeoptimized, 1);
+
+    __ Pop(kInterpreterAccumulatorRegister);  // Restore accumulator register.
+    // Tear down internal frame.
+  }
+
+  // Initialize register file register.
+  __ mov(kInterpreterRegisterFileRegister, ebp);
+  __ add(kInterpreterRegisterFileRegister,
+         Immediate(InterpreterFrameConstants::kRegisterFilePointerFromFp));
+
+  // Get the bytecode array pointer from the frame.
+  __ mov(ebx, Operand(kInterpreterRegisterFileRegister,
+                      InterpreterFrameConstants::kFunctionFromRegisterPointer));
+  __ mov(ebx, FieldOperand(ebx, JSFunction::kSharedFunctionInfoOffset));
+  __ mov(kInterpreterBytecodeArrayRegister,
+         FieldOperand(ebx, SharedFunctionInfo::kFunctionDataOffset));
+
+  if (FLAG_debug_code) {
+    // Check function data field is actually a BytecodeArray object.
+    __ AssertNotSmi(kInterpreterBytecodeArrayRegister);
+    __ CmpObjectType(kInterpreterBytecodeArrayRegister, BYTECODE_ARRAY_TYPE,
+                     ebx);
+    __ Assert(equal, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
+  }
+
+  // Get the target bytecode offset from the frame.
+  __ mov(
+      kInterpreterBytecodeOffsetRegister,
+      Operand(kInterpreterRegisterFileRegister,
+              InterpreterFrameConstants::kBytecodeOffsetFromRegisterPointer));
+  __ SmiUntag(kInterpreterBytecodeOffsetRegister);
+
+  // Push dispatch table as a stack located parameter to the bytecode handler -
+  // overwrite the state slot (we don't use these for interpreter deopts).
+  __ LoadRoot(ebx, Heap::kInterpreterTableRootIndex);
+  __ add(ebx, Immediate(FixedArray::kHeaderSize - kHeapObjectTag));
+  DCHECK_EQ(-1, kInterpreterDispatchTableSpillSlot);
+  __ mov(ebx, Operand(esp, -2 * kPointerSize));
+
+  // Dispatch to the target bytecode.
+  __ movzx_b(esi, Operand(kInterpreterBytecodeArrayRegister,
+                          kInterpreterBytecodeOffsetRegister, times_1, 0));
+  __ mov(ebx, Operand(ebx, esi, times_pointer_size, 0));
+
+  // Get the context from the frame.
+  // TODO(rmcilroy): Update interpreter frame to expect current context at the
+  // context slot instead of the function context.
+  __ mov(kContextRegister,
+         Operand(kInterpreterRegisterFileRegister,
+                 InterpreterFrameConstants::kContextFromRegisterPointer));
+
+  // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging
+  // and header removal.
+  __ add(ebx, Immediate(Code::kHeaderSize - kHeapObjectTag));
+  __ jmp(ebx);
+}
+
+
+void Builtins::Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm) {
+  Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
+}
+
+
+void Builtins::Generate_InterpreterNotifySoftDeoptimized(MacroAssembler* masm) {
+  Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::SOFT);
+}
+
+
+void Builtins::Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm) {
+  Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
+}
+
+
 void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   CallRuntimePassFunction(masm, Runtime::kCompileLazy);
   GenerateTailCallToReturnedCode(masm);
 }
 
 
 void Builtins::Generate_CompileOptimized(MacroAssembler* masm) {
   CallRuntimePassFunction(masm, Runtime::kCompileOptimized_NotConcurrent);
   GenerateTailCallToReturnedCode(masm);
 }
@@ skipping 1392 matching lines @@
 
   __ bind(&ok);
   __ ret(0);
 }
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87