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

src/compiler/ia32/instruction-scheduler-ia32.cc

Index: src/compiler/ia32/instruction-scheduler-ia32.cc
diff --git a/src/compiler/ia32/instruction-scheduler-ia32.cc b/src/compiler/ia32/instruction-scheduler-ia32.cc
deleted file mode 100644
index 27c1e389a6b587c7e44eebcaa2aa85a0daaed5ad..0000000000000000000000000000000000000000
--- a/src/compiler/ia32/instruction-scheduler-ia32.cc
+++ /dev/null
@@ -1,133 +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 kIA32Add:
-    case kIA32And:
-    case kIA32Cmp:
-    case kIA32Test:
-    case kIA32Or:
-    case kIA32Xor:
-    case kIA32Sub:
-    case kIA32Imul:
-    case kIA32ImulHigh:
-    case kIA32UmulHigh:
-    case kIA32Idiv:
-    case kIA32Udiv:
-    case kIA32Not:
-    case kIA32Neg:
-    case kIA32Shl:
-    case kIA32Shr:
-    case kIA32Sar:
-    case kIA32Ror:
-    case kIA32Lzcnt:
-    case kIA32Tzcnt:
-    case kIA32Popcnt:
-    case kIA32Lea:
-    case kSSEFloat32Cmp:
-    case kSSEFloat32Add:
-    case kSSEFloat32Sub:
-    case kSSEFloat32Mul:
-    case kSSEFloat32Div:
-    case kSSEFloat32Max:
-    case kSSEFloat32Min:
-    case kSSEFloat32Abs:
-    case kSSEFloat32Neg:
-    case kSSEFloat32Sqrt:
-    case kSSEFloat32Round:
-    case kSSEFloat64Cmp:
-    case kSSEFloat64Add:
-    case kSSEFloat64Sub:
-    case kSSEFloat64Mul:
-    case kSSEFloat64Div:
-    case kSSEFloat64Mod:
-    case kSSEFloat64Max:
-    case kSSEFloat64Min:
-    case kSSEFloat64Abs:
-    case kSSEFloat64Neg:
-    case kSSEFloat64Sqrt:
-    case kSSEFloat64Round:
-    case kSSEFloat32ToFloat64:
-    case kSSEFloat64ToFloat32:
-    case kSSEFloat64ToInt32:
-    case kSSEFloat64ToUint32:
-    case kSSEInt32ToFloat64:
-    case kSSEUint32ToFloat64:
-    case kSSEFloat64ExtractLowWord32:
-    case kSSEFloat64ExtractHighWord32:
-    case kSSEFloat64InsertLowWord32:
-    case kSSEFloat64InsertHighWord32:
-    case kSSEFloat64LoadLowWord32:
-    case kAVXFloat32Add:
-    case kAVXFloat32Sub:
-    case kAVXFloat32Mul:
-    case kAVXFloat32Div:
-    case kAVXFloat32Max:
-    case kAVXFloat32Min:
-    case kAVXFloat64Add:
-    case kAVXFloat64Sub:
-    case kAVXFloat64Mul:
-    case kAVXFloat64Div:
-    case kAVXFloat64Max:
-    case kAVXFloat64Min:
-    case kAVXFloat64Abs:
-    case kAVXFloat64Neg:
-    case kAVXFloat32Abs:
-    case kAVXFloat32Neg:
-    case kIA32BitcastFI:
-    case kIA32BitcastIF:
-      return (instr->addressing_mode() == kMode_None)
-          ? kNoOpcodeFlags
-          : kIsLoadOperation | kHasSideEffect;
-
-    case kIA32Movsxbl:
-    case kIA32Movzxbl:
-    case kIA32Movb:
-    case kIA32Movsxwl:
-    case kIA32Movzxwl:
-    case kIA32Movw:
-    case kIA32Movl:
-    case kIA32Movss:
-    case kIA32Movsd:
-      // Moves are used for memory load/store operations.
-      return instr->HasOutput() ? kIsLoadOperation : kHasSideEffect;
-
-    case kIA32StackCheck:
-      return kIsLoadOperation;
-
-    case kIA32Push:
-    case kIA32Poke:
-      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