Revert of [WIP][turbofan] Instruction scheduler for Turbofan.

src/compiler/x64/instruction-scheduler-x64.cc

Index: src/compiler/x64/instruction-scheduler-x64.cc
diff --git a/src/compiler/x64/instruction-scheduler-x64.cc b/src/compiler/x64/instruction-scheduler-x64.cc
deleted file mode 100644
index f8537c879c4bdfef00b08044d8e6b386664621c2..0000000000000000000000000000000000000000
--- a/src/compiler/x64/instruction-scheduler-x64.cc
+++ /dev/null
@@ -1,182 +0,0 @@
-// Copyright 2015 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-scheduler.h"
-
-namespace v8 {
-namespace internal {
-namespace compiler {
-
-bool InstructionScheduler::SchedulerSupported() { return true; }
-
-
-int InstructionScheduler::GetTargetInstructionFlags(
-    const Instruction* instr) const {
-  switch (instr->arch_opcode()) {
-    case kX64Add:
-    case kX64Add32:
-    case kX64And:
-    case kX64And32:
-    case kX64Cmp:
-    case kX64Cmp32:
-    case kX64Test:
-    case kX64Test32:
-    case kX64Or:
-    case kX64Or32:
-    case kX64Xor:
-    case kX64Xor32:
-    case kX64Sub:
-    case kX64Sub32:
-    case kX64Imul:
-    case kX64Imul32:
-    case kX64ImulHigh32:
-    case kX64UmulHigh32:
-    case kX64Idiv:
-    case kX64Idiv32:
-    case kX64Udiv:
-    case kX64Udiv32:
-    case kX64Not:
-    case kX64Not32:
-    case kX64Neg:
-    case kX64Neg32:
-    case kX64Shl:
-    case kX64Shl32:
-    case kX64Shr:
-    case kX64Shr32:
-    case kX64Sar:
-    case kX64Sar32:
-    case kX64Ror:
-    case kX64Ror32:
-    case kX64Lzcnt:
-    case kX64Lzcnt32:
-    case kX64Tzcnt:
-    case kX64Tzcnt32:
-    case kX64Popcnt:
-    case kX64Popcnt32:
-    case kSSEFloat32Cmp:
-    case kSSEFloat32Add:
-    case kSSEFloat32Sub:
-    case kSSEFloat32Mul:
-    case kSSEFloat32Div:
-    case kSSEFloat32Abs:
-    case kSSEFloat32Neg:
-    case kSSEFloat32Sqrt:
-    case kSSEFloat32Round:
-    case kSSEFloat32Max:
-    case kSSEFloat32Min:
-    case kSSEFloat32ToFloat64:
-    case kSSEFloat64Cmp:
-    case kSSEFloat64Add:
-    case kSSEFloat64Sub:
-    case kSSEFloat64Mul:
-    case kSSEFloat64Div:
-    case kSSEFloat64Mod:
-    case kSSEFloat64Abs:
-    case kSSEFloat64Neg:
-    case kSSEFloat64Sqrt:
-    case kSSEFloat64Round:
-    case kSSEFloat64Max:
-    case kSSEFloat64Min:
-    case kSSEFloat64ToFloat32:
-    case kSSEFloat64ToInt32:
-    case kSSEFloat64ToUint32:
-    case kSSEFloat64ToInt64:
-    case kSSEFloat32ToInt64:
-    case kSSEFloat64ToUint64:
-    case kSSEFloat32ToUint64:
-    case kSSEInt32ToFloat64:
-    case kSSEInt64ToFloat32:
-    case kSSEInt64ToFloat64:
-    case kSSEUint64ToFloat32:
-    case kSSEUint64ToFloat64:
-    case kSSEUint32ToFloat64:
-    case kSSEFloat64ExtractLowWord32:
-    case kSSEFloat64ExtractHighWord32:
-    case kSSEFloat64InsertLowWord32:
-    case kSSEFloat64InsertHighWord32:
-    case kSSEFloat64LoadLowWord32:
-    case kAVXFloat32Cmp:
-    case kAVXFloat32Add:
-    case kAVXFloat32Sub:
-    case kAVXFloat32Mul:
-    case kAVXFloat32Div:
-    case kAVXFloat32Max:
-    case kAVXFloat32Min:
-    case kAVXFloat64Cmp:
-    case kAVXFloat64Add:
-    case kAVXFloat64Sub:
-    case kAVXFloat64Mul:
-    case kAVXFloat64Div:
-    case kAVXFloat64Max:
-    case kAVXFloat64Min:
-    case kAVXFloat64Abs:
-    case kAVXFloat64Neg:
-    case kAVXFloat32Abs:
-    case kAVXFloat32Neg:
-    case kX64BitcastFI:
-    case kX64BitcastDL:
-    case kX64BitcastIF:
-    case kX64BitcastLD:
-    case kX64Lea32:
-    case kX64Lea:
-    case kX64Dec32:
-    case kX64Inc32:
-      return (instr->addressing_mode() == kMode_None)
-          ? kNoOpcodeFlags
-          : kIsLoadOperation | kHasSideEffect;
-
-    case kX64Movsxbl:
-    case kX64Movzxbl:
-    case kX64Movsxwl:
-    case kX64Movzxwl:
-    case kX64Movsxlq:
-      DCHECK(instr->InputCount() >= 1);
-      return instr->InputAt(0)->IsRegister() ? kNoOpcodeFlags
-                                             : kIsLoadOperation;
-
-    case kX64Movb:
-    case kX64Movw:
-      return kHasSideEffect;
-
-    case kX64Movl:
-      if (instr->HasOutput()) {
-        DCHECK(instr->InputCount() >= 1);
-        return instr->InputAt(0)->IsRegister() ? kNoOpcodeFlags
-                                               : kIsLoadOperation;
-      } else {
-        return kHasSideEffect;
-      }
-
-    case kX64Movq:
-    case kX64Movsd:
-    case kX64Movss:
-      return instr->HasOutput() ? kIsLoadOperation : kHasSideEffect;
-
-    case kX64StackCheck:
-      return kIsLoadOperation;
-
-    case kX64Push:
-    case kX64Poke:
-      return kHasSideEffect;
-
-#define CASE(Name) case k##Name:
-    COMMON_ARCH_OPCODE_LIST(CASE)
-#undef CASE
-      // Already covered in architecture independent code.
-      UNREACHABLE();
-  }
-
-  UNREACHABLE();
-  return kNoOpcodeFlags;
-}
-
-
-int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
-  // TODO(all): Add instruction cost modeling.
-  return 1;
-}
-
-}  // namespace compiler
-}  // namespace internal
-}  // namespace v8