[Transforms] Fix some Clang-tidy modernize and Include What You Use w…

…arnings; other minor fixes (NFC).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315940 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/Scalar/IndVarSimplify.h

@@ -15,17 +15,20 @@
 #ifndef LLVM_TRANSFORMS_SCALAR_INDVARSIMPLIFY_H
 #define LLVM_TRANSFORMS_SCALAR_INDVARSIMPLIFY_H
 
-#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/Analysis/LoopAnalysisManager.h"
 #include "llvm/IR/PassManager.h"
-#include "llvm/Transforms/Scalar/LoopPassManager.h"
 
 namespace llvm {
 
+class Loop;
+class LPMUpdater;
+
 class IndVarSimplifyPass : public PassInfoMixin<IndVarSimplifyPass> {
 public:
   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
 };
-}
+
+} // end namespace llvm
 
 #endif // LLVM_TRANSFORMS_SCALAR_INDVARSIMPLIFY_H

include/llvm/Transforms/Scalar/LoopDistribute.h

@@ -21,10 +21,13 @@
 
 namespace llvm {
 
+class Function;
+
 class LoopDistributePass : public PassInfoMixin<LoopDistributePass> {
 public:
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
 };
+
 } // end namespace llvm
 
 #endif // LLVM_TRANSFORMS_SCALAR_LOOPDISTRIBUTE_H

include/llvm/Transforms/Scalar/LoopIdiomRecognize.h

@@ -1,4 +1,4 @@
-//===- LoopIdiomRecognize.h - Loop Idiom Recognize Pass -------*- C++ -*-===//
+//===- LoopIdiomRecognize.h - Loop Idiom Recognize Pass ---------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -16,18 +16,21 @@
 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H
 #define LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H
 
-#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/Analysis/LoopAnalysisManager.h"
 #include "llvm/IR/PassManager.h"
-#include "llvm/Transforms/Scalar/LoopPassManager.h"
 
 namespace llvm {
 
+class Loop;
+class LPMUpdater;
+
 /// Performs Loop Idiom Recognize Pass.
 class LoopIdiomRecognizePass : public PassInfoMixin<LoopIdiomRecognizePass> {
 public:
   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
 };
+
 } // end namespace llvm
 
 #endif // LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H

include/llvm/Transforms/Scalar/LoopInstSimplify.h

@@ -1,4 +1,4 @@
-//===- LoopInstSimplify.h - Loop Inst Simplify Pass -------*- C++ -*-===//
+//===- LoopInstSimplify.h - Loop Inst Simplify Pass -------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -14,18 +14,21 @@
 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPINSTSIMPLIFY_H
 #define LLVM_TRANSFORMS_SCALAR_LOOPINSTSIMPLIFY_H
 
-#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/Analysis/LoopAnalysisManager.h"
 #include "llvm/IR/PassManager.h"
-#include "llvm/Transforms/Scalar/LoopPassManager.h"
 
 namespace llvm {
 
+class Loop;
+class LPMUpdater;
+
 /// Performs Loop Inst Simplify Pass.
 class LoopInstSimplifyPass : public PassInfoMixin<LoopInstSimplifyPass> {
 public:
   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
 };
+
 } // end namespace llvm
 
 #endif // LLVM_TRANSFORMS_SCALAR_LOOPINSTSIMPLIFY_H

include/llvm/Transforms/Scalar/LoopLoadElimination.h

@@ -1,16 +1,17 @@
-//===---- LoopLoadElimination.h ---------------------------------*- C++ -*-===//
+//===- LoopLoadElimination.h ------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+//
 /// \file
 /// This header defines the LoopLoadEliminationPass object. This pass forwards
 /// loaded values around loop backedges to allow their use in subsequent
 /// iterations.
-///
+//
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPLOADELIMINATION_H
@@ -20,11 +21,14 @@
 
 namespace llvm {
 
+class Function;
+
 /// Pass to forward loads in a loop around the backedge to subsequent
 /// iterations.
 struct LoopLoadEliminationPass : public PassInfoMixin<LoopLoadEliminationPass> {
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
 };
-}
+
+} // end namespace llvm
 
 #endif // LLVM_TRANSFORMS_SCALAR_LOOPLOADELIMINATION_H