[turbofan] Pass type information of arguments to EmitPrepareArguments.

src/compiler/instruction-selector.cc

 // Copyright 2014 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.
 
 #include "src/compiler/instruction-selector.h"
 
 #include <limits>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
@@ skipping 379 matching lines @@
     pushed_nodes.reserve(input_count());
     instruction_args.reserve(input_count() + frame_state_value_count());
   }
 
 
   const CallDescriptor* descriptor;
   FrameStateDescriptor* frame_state_descriptor;
   NodeVector output_nodes;
   InstructionOperandVector outputs;
   InstructionOperandVector instruction_args;
-  NodeVector pushed_nodes;
+  ZoneVector<PushParameter> pushed_nodes;
 
   size_t input_count() const { return descriptor->InputCount(); }
 
   size_t frame_state_count() const { return descriptor->FrameStateCount(); }
 
   size_t frame_state_value_count() const {
     return (frame_state_descriptor == NULL)
                ? 0
                : (frame_state_descriptor->GetTotalSize() +
                   1);  // Include deopt id.
@@ skipping 121 matching lines @@
     if (call_tail) {
       location = LinkageLocation::ConvertToTailCallerLocation(
           location, stack_param_delta);
     }
     InstructionOperand op =
         g.UseLocation(*iter, location,
                       buffer->descriptor->GetInputType(index).representation());
     if (UnallocatedOperand::cast(op).HasFixedSlotPolicy() && !call_tail) {
       int stack_index = -UnallocatedOperand::cast(op).fixed_slot_index() - 1;
       if (static_cast<size_t>(stack_index) >= buffer->pushed_nodes.size()) {
-        buffer->pushed_nodes.resize(stack_index + 1, NULL);
+        buffer->pushed_nodes.resize(stack_index + 1);
       }
-      DCHECK(!buffer->pushed_nodes[stack_index]);
-      buffer->pushed_nodes[stack_index] = *iter;
+      PushParameter parameter(*iter, buffer->descriptor->GetInputType(index));
+      buffer->pushed_nodes[stack_index] = parameter;
       pushed_count++;
     } else {
       buffer->instruction_args.push_back(op);
     }
   }
   DCHECK_EQ(input_count, buffer->instruction_args.size() + pushed_count -
                              buffer->frame_state_value_count());
   if (V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK && call_tail &&
       stack_param_delta != 0) {
     // For tail calls that change the size of their parameter list and keep
@@ skipping 956 matching lines @@
   return new (instruction_zone()) FrameStateDescriptor(
       instruction_zone(), state_info.type(), state_info.bailout_id(),
       state_info.state_combine(), parameters, locals, stack,
       state_info.shared_info(), outer_state);
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8