Rollback trunk to 3.21.16.2

src/ia32/macro-assembler-ia32.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 265 matching lines @@
 
 
 void MacroAssembler::DoubleToI(Register result_reg,
                                XMMRegister input_reg,
                                XMMRegister scratch,
                                MinusZeroMode minus_zero_mode,
                                Label* conversion_failed,
                                Label::Distance dst) {
   ASSERT(!input_reg.is(scratch));
   cvttsd2si(result_reg, Operand(input_reg));
-  Cvtsi2sd(scratch, Operand(result_reg));
+  cvtsi2sd(scratch, Operand(result_reg));
   ucomisd(scratch, input_reg);
   j(not_equal, conversion_failed, dst);
   j(parity_even, conversion_failed, dst);  // NaN.
   if (minus_zero_mode == FAIL_ON_MINUS_ZERO) {
     Label done;
     // The integer converted back is equal to the original. We
     // only have to test if we got -0 as an input.
     test(result_reg, Operand(result_reg));
     j(not_zero, &done, Label::kNear);
     movmskpd(result_reg, input_reg);
@@ skipping 88 matching lines @@
   cmp(FieldOperand(input_reg, HeapObject::kMapOffset),
       isolate()->factory()->heap_number_map());
   j(not_equal, lost_precision, Label::kNear);
 
   if (CpuFeatures::IsSafeForSnapshot(SSE2)) {
     ASSERT(!temp.is(no_xmm_reg));
     CpuFeatureScope scope(this, SSE2);
 
     movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset));
     cvttsd2si(result_reg, Operand(xmm0));
-    Cvtsi2sd(temp, Operand(result_reg));
+    cvtsi2sd(temp, Operand(result_reg));
     ucomisd(xmm0, temp);
     RecordComment("Deferred TaggedToI: lost precision");
     j(not_equal, lost_precision, Label::kNear);
     RecordComment("Deferred TaggedToI: NaN");
     j(parity_even, lost_precision, Label::kNear);
     if (minus_zero_mode == FAIL_ON_MINUS_ZERO) {
       test(result_reg, Operand(result_reg));
       j(not_zero, &done, Label::kNear);
       movmskpd(result_reg, xmm0);
       and_(result_reg, 1);
@@ skipping 44 matching lines @@
     static_cast<double>(static_cast<uint32_t>(0xFFFFFFFF)) + 1;
 
 
 void MacroAssembler::LoadUint32(XMMRegister dst,
                                 Register src,
                                 XMMRegister scratch) {
   Label done;
   cmp(src, Immediate(0));
   movdbl(scratch,
          Operand(reinterpret_cast<int32_t>(&kUint32Bias), RelocInfo::NONE32));
-  Cvtsi2sd(dst, src);
+  cvtsi2sd(dst, src);
   j(not_sign, &done, Label::kNear);
   addsd(dst, scratch);
   bind(&done);
 }
 
 
 void MacroAssembler::RecordWriteArray(Register object,
                                       Register value,
                                       Register index,
                                       SaveFPRegsMode save_fp,
@@ skipping 198 matching lines @@
 #ifdef ENABLE_DEBUGGER_SUPPORT
 void MacroAssembler::DebugBreak() {
   Set(eax, Immediate(0));
   mov(ebx, Immediate(ExternalReference(Runtime::kDebugBreak, isolate())));
   CEntryStub ces(1);
   call(ces.GetCode(isolate()), RelocInfo::DEBUG_BREAK);
 }
 #endif
 
 
-void MacroAssembler::Cvtsi2sd(XMMRegister dst, const Operand& src) {
-  xorps(dst, dst);
-  cvtsi2sd(dst, src);
-}
-
-
 void MacroAssembler::Set(Register dst, const Immediate& x) {
   if (x.is_zero()) {
     xor_(dst, dst);  // Shorter than mov.
   } else {
     mov(dst, x);
   }
 }
 
 
 void MacroAssembler::Set(const Operand& dst, const Immediate& x) {
@@ skipping 138 matching lines @@
   }
   jmp(&have_double_value, Label::kNear);
 
   bind(&smi_value);
   // Value is a smi. Convert to a double and store.
   // Preserve original value.
   mov(scratch1, maybe_number);
   SmiUntag(scratch1);
   if (CpuFeatures::IsSupported(SSE2) && specialize_for_processor) {
     CpuFeatureScope fscope(this, SSE2);
-    Cvtsi2sd(scratch2, scratch1);
+    cvtsi2sd(scratch2, scratch1);
     movdbl(FieldOperand(elements, key, times_4,
                         FixedDoubleArray::kHeaderSize - elements_offset),
            scratch2);
   } else {
     push(scratch1);
     fild_s(Operand(esp, 0));
     pop(scratch1);
     fstp_d(FieldOperand(elements, key, times_4,
                         FixedDoubleArray::kHeaderSize - elements_offset));
   }
@@ skipping 254 matching lines @@
   // Get the return address from the stack and restore the frame pointer.
   mov(ecx, Operand(ebp, 1 * kPointerSize));
   mov(ebp, Operand(ebp, 0 * kPointerSize));
 
   // Pop the arguments and the receiver from the caller stack.
   lea(esp, Operand(esi, 1 * kPointerSize));
 
   // Push the return address to get ready to return.
   push(ecx);
 
-  LeaveExitFrameEpilogue(true);
+  LeaveExitFrameEpilogue();
 }
 
 
-void MacroAssembler::LeaveExitFrameEpilogue(bool restore_context) {
+void MacroAssembler::LeaveExitFrameEpilogue() {
   // Restore current context from top and clear it in debug mode.
   ExternalReference context_address(Isolate::kContextAddress, isolate());
-  if (restore_context) {
-    mov(esi, Operand::StaticVariable(context_address));
-  }
+  mov(esi, Operand::StaticVariable(context_address));
 #ifdef DEBUG
   mov(Operand::StaticVariable(context_address), Immediate(0));
 #endif
 
   // Clear the top frame.
   ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress,
                                        isolate());
   mov(Operand::StaticVariable(c_entry_fp_address), Immediate(0));
 }
 
 
-void MacroAssembler::LeaveApiExitFrame(bool restore_context) {
+void MacroAssembler::LeaveApiExitFrame() {
   mov(esp, ebp);
   pop(ebp);
 
-  LeaveExitFrameEpilogue(restore_context);
+  LeaveExitFrameEpilogue();
 }
 
 
 void MacroAssembler::PushTryHandler(StackHandler::Kind kind,
                                     int handler_index) {
   // Adjust this code if not the case.
   STATIC_ASSERT(StackHandlerConstants::kSize == 5 * kPointerSize);
   STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
   STATIC_ASSERT(StackHandlerConstants::kCodeOffset == 1 * kPointerSize);
   STATIC_ASSERT(StackHandlerConstants::kStateOffset == 2 * kPointerSize);
@@ skipping 1068 matching lines @@
 
 
 void MacroAssembler::PrepareCallApiFunction(int argc) {
   EnterApiExitFrame(argc);
   if (emit_debug_code()) {
     mov(esi, Immediate(BitCast<int32_t>(kZapValue)));
   }
 }
 
 
-void MacroAssembler::CallApiFunctionAndReturn(
-    Address function_address,
-    Address thunk_address,
-    Operand thunk_last_arg,
-    int stack_space,
-    Operand return_value_operand,
-    Operand* context_restore_operand) {
+void MacroAssembler::CallApiFunctionAndReturn(Address function_address,
+                                              Address thunk_address,
+                                              Operand thunk_last_arg,
+                                              int stack_space,
+                                              int return_value_offset) {
   ExternalReference next_address =
       ExternalReference::handle_scope_next_address(isolate());
   ExternalReference limit_address =
       ExternalReference::handle_scope_limit_address(isolate());
   ExternalReference level_address =
       ExternalReference::handle_scope_level_address(isolate());
 
   // Allocate HandleScope in callee-save registers.
   mov(ebx, Operand::StaticVariable(next_address));
   mov(edi, Operand::StaticVariable(limit_address));
@@ skipping 35 matching lines @@
     PushSafepointRegisters();
     PrepareCallCFunction(1, eax);
     mov(Operand(esp, 0),
         Immediate(ExternalReference::isolate_address(isolate())));
     CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1);
     PopSafepointRegisters();
   }
 
   Label prologue;
   // Load the value from ReturnValue
-  mov(eax, return_value_operand);
+  mov(eax, Operand(ebp, return_value_offset * kPointerSize));
 
   Label promote_scheduled_exception;
-  Label exception_handled;
   Label delete_allocated_handles;
   Label leave_exit_frame;
 
   bind(&prologue);
   // No more valid handles (the result handle was the last one). Restore
   // previous handle scope.
   mov(Operand::StaticVariable(next_address), ebx);
   sub(Operand::StaticVariable(level_address), Immediate(1));
   Assert(above_equal, kInvalidHandleScopeLevel);
   cmp(edi, Operand::StaticVariable(limit_address));
   j(not_equal, &delete_allocated_handles);
   bind(&leave_exit_frame);
 
   // Check if the function scheduled an exception.
   ExternalReference scheduled_exception_address =
       ExternalReference::scheduled_exception_address(isolate());
   cmp(Operand::StaticVariable(scheduled_exception_address),
       Immediate(isolate()->factory()->the_hole_value()));
   j(not_equal, &promote_scheduled_exception);
-  bind(&exception_handled);
 
 #if ENABLE_EXTRA_CHECKS
   // Check if the function returned a valid JavaScript value.
   Label ok;
   Register return_value = eax;
   Register map = ecx;
 
   JumpIfSmi(return_value, &ok, Label::kNear);
   mov(map, FieldOperand(return_value, HeapObject::kMapOffset));
 
@@ skipping 16 matching lines @@
   j(equal, &ok, Label::kNear);
 
   cmp(return_value, isolate()->factory()->null_value());
   j(equal, &ok, Label::kNear);
 
   Abort(kAPICallReturnedInvalidObject);
 
   bind(&ok);
 #endif
 
-  bool restore_context = context_restore_operand != NULL;
-  if (restore_context) {
-    mov(esi, *context_restore_operand);
-  }
-  LeaveApiExitFrame(!restore_context);
+  LeaveApiExitFrame();
   ret(stack_space * kPointerSize);
 
   bind(&promote_scheduled_exception);
-  {
-    FrameScope frame(this, StackFrame::INTERNAL);
-    CallRuntime(Runtime::kPromoteScheduledException, 0);
-  }
-  jmp(&exception_handled);
+  TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1);
 
   // HandleScope limit has changed. Delete allocated extensions.
   ExternalReference delete_extensions =
       ExternalReference::delete_handle_scope_extensions(isolate());
   bind(&delete_allocated_handles);
   mov(Operand::StaticVariable(limit_address), edi);
   mov(edi, eax);
   mov(Operand(esp, 0),
       Immediate(ExternalReference::isolate_address(isolate())));
   mov(eax, Immediate(delete_extensions));
@@ skipping 1067 matching lines @@
   j(greater, &no_memento_available);
   cmp(MemOperand(scratch_reg, -AllocationMemento::kSize),
       Immediate(Handle<Map>(isolate()->heap()->allocation_memento_map())));
   bind(&no_memento_available);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32