store InstructionOperands directly in Instruction

src/compiler/instruction.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/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/instruction.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 99 matching lines @@
 
 
 bool ParallelMove::IsRedundant() const {
   for (int i = 0; i < move_operands_.length(); ++i) {
     if (!move_operands_[i].IsRedundant()) return false;
   }
   return true;
 }
 
 
+static void SetOperand(UnallocatedOperand* loc, InstructionOperand* value) {
+  if (value->IsUnallocated()) {
+    loc[0] = *UnallocatedOperand::cast(value);
+  } else {
+    InstructionOperand* casted = static_cast<InstructionOperand*>(loc);
+    casted[0] = *value;
+  }
+}
+
+
+Instruction::Instruction(InstructionCode opcode)
+    : opcode_(opcode),
+      bit_field_(OutputCountField::encode(0) | InputCountField::encode(0) |
+                 TempCountField::encode(0) | IsCallField::encode(false) |
+                 IsControlField::encode(false)),
+      pointer_map_(NULL) {}
+
+
+Instruction::Instruction(InstructionCode opcode, size_t output_count,
+                         InstructionOperand** outputs, size_t input_count,
+                         InstructionOperand** inputs, size_t temp_count,
+                         InstructionOperand** temps)
+    : opcode_(opcode),
+      bit_field_(OutputCountField::encode(output_count) |
+                 InputCountField::encode(input_count) |
+                 TempCountField::encode(temp_count) |
+                 IsCallField::encode(false) | IsControlField::encode(false)),
+      pointer_map_(NULL) {
+  size_t offset = 0;
+  for (size_t i = 0; i < output_count; ++i) {
+    SetOperand(&operands_[offset++], outputs[i]);
+  }
+  for (size_t i = 0; i < input_count; ++i) {
+    SetOperand(&operands_[offset++], inputs[i]);
+  }
+  for (size_t i = 0; i < temp_count; ++i) {
+    SetOperand(&operands_[offset++], temps[i]);
+  }
+}
+
+
 bool GapInstruction::IsRedundant() const {
   for (int i = GapInstruction::FIRST_INNER_POSITION;
        i <= GapInstruction::LAST_INNER_POSITION; i++) {
     if (parallel_moves_[i] != NULL && !parallel_moves_[i]->IsRedundant())
       return false;
   }
   return true;
 }
 
 
@@ skipping 563 matching lines @@
       os << " B" << succ_block->id();
     }
     os << "\n";
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8