[unittests] Add InitializePasses.h includes

[aheejin]

Summary

After D70211, Pass.h does not include InitializePasses.h anymore, so
these files need to include InitializePasses.h directly.

[aheejin]

• Remove Pass.h includes that are unnecessary now

[rnk]

Lgtm

If anyone is around, please push this.

llvm/unittests/Analysis/AliasAnalysisTest.cpp

 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/AsmParser/Parser.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/SourceMgr.h"
 #include "gtest/gtest.h"
 
 using namespace llvm;
 
 // Set up some test passes.
 namespace llvm {
 void initializeAATestPassPass(PassRegistry&);

llvm/unittests/Analysis/CFGTest.cpp

 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/AsmParser/Parser.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/SourceMgr.h"
 #include "gtest/gtest.h"
 
 using namespace llvm;
 
 namespace {
 

llvm/unittests/Analysis/UnrollAnalyzerTest.cpp

 //===- UnrollAnalyzerTest.cpp - UnrollAnalyzer unit tests -----------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/LoopUnrollAnalyzer.h"
 #include "llvm/AsmParser/Parser.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/LegacyPassManager.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/SourceMgr.h"
 #include "gtest/gtest.h"
 
 using namespace llvm;
 namespace llvm {
 void initializeUnrollAnalyzerTestPass(PassRegistry &);
 
 static SmallVector<DenseMap<Value *, Constant *>, 16> SimplifiedValuesVector;

llvm/unittests/CodeGen/GlobalISel/GISelMITest.h

 #include "llvm/CodeGen/GlobalISel/Utils.h"
 #include "llvm/CodeGen/MIRParser/MIRParser.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/TargetFrameLowering.h"
 #include "llvm/CodeGen/TargetInstrInfo.h"
 #include "llvm/CodeGen/TargetLowering.h"
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/FileCheck.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
 #include "gtest/gtest.h"
 

llvm/unittests/CodeGen/TargetOptionsTest.cpp

 #include "llvm/Target/TargetOptions.h"
 #include "llvm/CodeGen/TargetPassConfig.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "gtest/gtest.h"
 
 using namespace llvm;
 
 namespace llvm {

llvm/unittests/IR/LegacyPassManagerTest.cpp

 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/OptBisect.h"
-#include "llvm/Pass.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/raw_ostream.h"
 #include "gtest/gtest.h"
 
 using namespace llvm;
 
 namespace llvm {
   void initializeModuleNDMPass(PassRegistry&);

llvm/unittests/MI/LiveIntervalTest.cpp

 #include "llvm/ADT/STLExtras.h"
 #include "llvm/CodeGen/LiveIntervals.h"
 #include "llvm/CodeGen/MIRParser/MIRParser.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/TargetRegisterInfo.h"
 #include "llvm/IR/LegacyPassManager.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
 #include "gtest/gtest.h"