[turbofan] Move platform-independent bits of VisitTailCall to instruction-selector.cc

src/compiler/mips/instruction-selector-mips.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/base/adapters.h"
 #include "src/base/bits.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
@@ skipping 545 matching lines @@
     for (size_t n = 0; n < arguments->size(); ++n) {
       if (Node* input = (*arguments)[n]) {
         Emit(kMipsStoreToStackSlot, g.NoOutput(), g.UseRegister(input),
              g.TempImmediate(n << kPointerSizeLog2));
       }
     }
   }
 }
 
 
-void InstructionSelector::VisitTailCall(Node* node) {
-  MipsOperandGenerator g(this);
-  const CallDescriptor* descriptor = OpParameter<const CallDescriptor*>(node);
-  DCHECK_NE(0, descriptor->flags() & CallDescriptor::kSupportsTailCalls);
-  DCHECK_EQ(0, descriptor->flags() & CallDescriptor::kPatchableCallSite);
-  DCHECK_EQ(0, descriptor->flags() & CallDescriptor::kNeedsNopAfterCall);
-
-  // TODO(turbofan): Relax restriction for stack parameters.
-  if (linkage()->GetIncomingDescriptor()->CanTailCall(node)) {
-    CallBuffer buffer(zone(), descriptor, nullptr);
-
-    // Compute InstructionOperands for inputs and outputs.
-    InitializeCallBuffer(node, &buffer, true, false);
-
-    // Select the appropriate opcode based on the call type.
-    InstructionCode opcode;
-    switch (descriptor->kind()) {
-      case CallDescriptor::kCallCodeObject:
-        opcode = kArchTailCallCodeObject;
-        break;
-      case CallDescriptor::kCallJSFunction:
-        opcode = kArchTailCallJSFunction;
-        break;
-      default:
-        UNREACHABLE();
-        return;
-    }
-    opcode |= MiscField::encode(descriptor->flags());
-
-    // Emit the tailcall instruction.
-    Emit(opcode, 0, nullptr, buffer.instruction_args.size(),
-         &buffer.instruction_args.front());
-  } else {
-    FrameStateDescriptor* frame_state_descriptor =
-        descriptor->NeedsFrameState()
-            ? GetFrameStateDescriptor(
-                  node->InputAt(static_cast<int>(descriptor->InputCount())))
-            : nullptr;
-
-    CallBuffer buffer(zone(), descriptor, frame_state_descriptor);
-
-    // Compute InstructionOperands for inputs and outputs.
-    InitializeCallBuffer(node, &buffer, true, false);
-    // Possibly align stack here for functions.
-    int push_count = static_cast<int>(descriptor->StackParameterCount());
-    if (push_count > 0) {
-      Emit(kMipsStackClaim, g.NoOutput(),
-           g.TempImmediate(push_count << kPointerSizeLog2));
-    }
-    int slot = static_cast<int>(buffer.pushed_nodes.size()) - 1;
-    for (Node* input : base::Reversed(buffer.pushed_nodes)) {
-      Emit(kMipsStoreToStackSlot, g.NoOutput(), g.UseRegister(input),
-           g.TempImmediate(slot << kPointerSizeLog2));
-      slot--;
-    }
-
-    // Select the appropriate opcode based on the call type.
-    InstructionCode opcode;
-    switch (descriptor->kind()) {
-      case CallDescriptor::kCallCodeObject: {
-        opcode = kArchCallCodeObject;
-        break;
-      }
-      case CallDescriptor::kCallJSFunction:
-        opcode = kArchCallJSFunction;
-        break;
-      default:
-        UNREACHABLE();
-        return;
-    }
-    opcode |= MiscField::encode(descriptor->flags());
-
-    // Emit the call instruction.
-    size_t const output_count = buffer.outputs.size();
-    auto* outputs = output_count ? &buffer.outputs.front() : nullptr;
-    Emit(opcode, output_count, outputs, buffer.instruction_args.size(),
-         &buffer.instruction_args.front())->MarkAsCall();
-    Emit(kArchRet, 0, nullptr, output_count, outputs);
-  }
-}
+bool InstructionSelector::IsTailCallAddressImmediate() { return false; }
 
 
 void InstructionSelector::VisitCheckedLoad(Node* node) {
   MachineType rep = RepresentationOf(OpParameter<MachineType>(node));
   MachineType typ = TypeOf(OpParameter<MachineType>(node));
   MipsOperandGenerator g(this);
   Node* const buffer = node->InputAt(0);
   Node* const offset = node->InputAt(1);
   Node* const length = node->InputAt(2);
   ArchOpcode opcode;
@@ skipping 456 matching lines @@
       IsFp64Mode()) {
     flags |= MachineOperatorBuilder::kFloat64RoundDown |
              MachineOperatorBuilder::kFloat64RoundTruncate;
   }
   return flags;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8