Cleanup codegen includes

This is a (fixed) recommit of https://reviews.llvm.org/D121169

after:  1061034926
before: 1063332844

Discourse thread: https://discourse.llvm.org/t/include-what-you-use-include-cleanup
Differential Revision: https://reviews.llvm.org/D121681

Author: serge-sans-paille

lld/Common/TargetOptionsCommandFlags.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "lld/Common/TargetOptionsCommandFlags.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/CodeGen/CommandFlags.h"
 #include "llvm/Target/TargetOptions.h"
 

llvm/include/llvm/CodeGen/Analysis.h

@@ -15,14 +15,11 @@
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/Triple.h"
 #include "llvm/CodeGen/ISDOpcodes.h"
-#include "llvm/IR/InlineAsm.h"
 #include "llvm/IR/Instructions.h"
-#include "llvm/Support/CodeGen.h"
 
 namespace llvm {
+template <typename T> class SmallVectorImpl;
 class GlobalValue;
 class LLT;
 class MachineBasicBlock;

llvm/include/llvm/CodeGen/CalcSpillWeights.h

@@ -9,7 +9,6 @@
 #ifndef LLVM_CODEGEN_CALCSPILLWEIGHTS_H
 #define LLVM_CODEGEN_CALCSPILLWEIGHTS_H
 
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/CodeGen/SlotIndexes.h"
 
 namespace llvm {

llvm/include/llvm/CodeGen/CallingConvLower.h

@@ -15,11 +15,9 @@
 #define LLVM_CODEGEN_CALLINGCONVLOWER_H
 
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/Register.h"
 #include "llvm/CodeGen/TargetCallingConv.h"
 #include "llvm/IR/CallingConv.h"
-#include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/Support/Alignment.h"
 
 namespace llvm {

llvm/include/llvm/CodeGen/CodeGenCommonISel.h

@@ -19,7 +19,6 @@
 namespace llvm {
 
 class BasicBlock;
-class MachineBasicBlock;
 /// Encapsulates all of the information needed to generate a stack protector
 /// check, and signals to isel when initialized that one needs to be generated.
 ///

llvm/include/llvm/CodeGen/CodeGenPassBuilder.h

@@ -15,7 +15,6 @@
 #ifndef LLVM_CODEGEN_CODEGENPASSBUILDER_H
 #define LLVM_CODEGEN_CODEGENPASSBUILDER_H
 
-#include "llvm/ADT/FunctionExtras.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Analysis/AliasAnalysis.h"
@@ -26,7 +25,6 @@
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/Analysis/TypeBasedAliasAnalysis.h"
 #include "llvm/CodeGen/ExpandReductions.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachinePassManager.h"
 #include "llvm/CodeGen/PreISelIntrinsicLowering.h"
 #include "llvm/CodeGen/ReplaceWithVeclib.h"
@@ -35,23 +33,20 @@
 #include "llvm/IR/PassManager.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCTargetOptions.h"
 #include "llvm/Support/CodeGen.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Target/CGPassBuilderOption.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Scalar/ConstantHoisting.h"
 #include "llvm/Transforms/Scalar/LoopPassManager.h"
 #include "llvm/Transforms/Scalar/LoopStrengthReduce.h"
 #include "llvm/Transforms/Scalar/LowerConstantIntrinsics.h"
 #include "llvm/Transforms/Scalar/MergeICmps.h"
 #include "llvm/Transforms/Scalar/PartiallyInlineLibCalls.h"
 #include "llvm/Transforms/Scalar/ScalarizeMaskedMemIntrin.h"
-#include "llvm/Transforms/Utils.h"
 #include "llvm/Transforms/Utils/EntryExitInstrumenter.h"
 #include "llvm/Transforms/Utils/LowerInvoke.h"
 #include <cassert>

llvm/include/llvm/CodeGen/CommandFlags.h

@@ -16,11 +16,6 @@
 #define LLVM_CODEGEN_COMMANDFLAGS_H
 
 #include "llvm/ADT/FloatingPointMode.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/Intrinsics.h"
-#include "llvm/MC/MCTargetOptionsCommandFlags.h"
 #include "llvm/Support/CodeGen.h"
 #include "llvm/Target/TargetOptions.h"
 #include <string>
@@ -29,6 +24,9 @@
 namespace llvm {
 
 class Module;
+class AttrBuilder;
+class Function;
+class Triple;
 
 namespace codegen {
 

llvm/include/llvm/CodeGen/DFAPacketizer.h

@@ -25,9 +25,7 @@
 #ifndef LLVM_CODEGEN_DFAPACKETIZER_H
 #define LLVM_CODEGEN_DFAPACKETIZER_H
 
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
-#include "llvm/CodeGen/ScheduleDAGMutation.h"
 #include "llvm/Support/Automaton.h"
 #include <cstdint>
 #include <map>
@@ -38,6 +36,7 @@
 namespace llvm {
 
 class DefaultVLIWScheduler;
+class ScheduleDAGMutation;
 class InstrItineraryData;
 class MachineFunction;
 class MachineInstr;

llvm/include/llvm/CodeGen/FaultMaps.h

@@ -10,7 +10,6 @@
 #define LLVM_CODEGEN_FAULTMAPS_H
 
 #include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/Endian.h"
 #include <map>
 #include <vector>
 

llvm/include/llvm/CodeGen/IntrinsicLowering.h

@@ -15,8 +15,6 @@
 #ifndef LLVM_CODEGEN_INTRINSICLOWERING_H
 #define LLVM_CODEGEN_INTRINSICLOWERING_H
 
-#include "llvm/IR/Intrinsics.h"
-
 namespace llvm {
 class CallInst;
 class DataLayout;