[flang-commits] [clang] [flang] [llvm] [mlir] Make Ownership of MachineModuleInfo in Its Wrapper Pass External (PR #110443)

Matin Raayai via flang-commits flang-commits at lists.llvm.org
Wed Oct 2 09:12:39 PDT 2024


https://github.com/matinraayai updated https://github.com/llvm/llvm-project/pull/110443

>From 6a78a683f4834049c07f9672c358dcbb44ac14e7 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 16:54:50 -0400
Subject: [PATCH 01/21] Made MMIWP not have control over the lifetime of MMI.

---
 llvm/include/llvm/CodeGen/MachineModuleInfo.h | 15 +++++++------
 llvm/lib/CodeGen/MachineModuleInfo.cpp        | 21 ++-----------------
 2 files changed, 9 insertions(+), 27 deletions(-)

diff --git a/llvm/include/llvm/CodeGen/MachineModuleInfo.h b/llvm/include/llvm/CodeGen/MachineModuleInfo.h
index 310cc4b2abb772..8c81df23c29984 100644
--- a/llvm/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/llvm/include/llvm/CodeGen/MachineModuleInfo.h
@@ -106,7 +106,11 @@ class MachineModuleInfo {
   const Function *LastRequest = nullptr; ///< Used for shortcut/cache.
   MachineFunction *LastResult = nullptr; ///< Used for shortcut/cache.
 
-  MachineModuleInfo &operator=(MachineModuleInfo &&MMII) = delete;
+  /// Deleted copy constructor
+  MachineModuleInfo(MachineModuleInfo &MMI) = delete;
+
+  /// Deleted copy assignment operator
+  MachineModuleInfo &operator=(MachineModuleInfo &MMI) = delete;
 
 public:
   explicit MachineModuleInfo(const LLVMTargetMachine *TM = nullptr);
@@ -114,8 +118,6 @@ class MachineModuleInfo {
   explicit MachineModuleInfo(const LLVMTargetMachine *TM,
                              MCContext *ExtContext);
 
-  MachineModuleInfo(MachineModuleInfo &&MMII);
-
   ~MachineModuleInfo();
 
   void initialize();
@@ -169,14 +171,11 @@ class MachineModuleInfo {
 }; // End class MachineModuleInfo
 
 class MachineModuleInfoWrapperPass : public ImmutablePass {
-  MachineModuleInfo MMI;
+  MachineModuleInfo &MMI;
 
 public:
   static char ID; // Pass identification, replacement for typeid
-  explicit MachineModuleInfoWrapperPass(const LLVMTargetMachine *TM = nullptr);
-
-  explicit MachineModuleInfoWrapperPass(const LLVMTargetMachine *TM,
-                                        MCContext *ExtContext);
+  explicit MachineModuleInfoWrapperPass(MachineModuleInfo &MMI);
 
   // Initialization and Finalization
   bool doInitialization(Module &) override;
diff --git a/llvm/lib/CodeGen/MachineModuleInfo.cpp b/llvm/lib/CodeGen/MachineModuleInfo.cpp
index c66495969b4e67..8ecc53e66d6d25 100644
--- a/llvm/lib/CodeGen/MachineModuleInfo.cpp
+++ b/llvm/lib/CodeGen/MachineModuleInfo.cpp
@@ -37,17 +37,6 @@ void MachineModuleInfo::finalize() {
   ObjFileMMI = nullptr;
 }
 
-MachineModuleInfo::MachineModuleInfo(MachineModuleInfo &&MMI)
-    : TM(std::move(MMI.TM)),
-      Context(TM.getTargetTriple(), TM.getMCAsmInfo(), TM.getMCRegisterInfo(),
-              TM.getMCSubtargetInfo(), nullptr, &TM.Options.MCOptions, false),
-      MachineFunctions(std::move(MMI.MachineFunctions)) {
-  Context.setObjectFileInfo(TM.getObjFileLowering());
-  ObjFileMMI = MMI.ObjFileMMI;
-  ExternalContext = MMI.ExternalContext;
-  TheModule = MMI.TheModule;
-}
-
 MachineModuleInfo::MachineModuleInfo(const LLVMTargetMachine *TM)
     : TM(*TM), Context(TM->getTargetTriple(), TM->getMCAsmInfo(),
                        TM->getMCRegisterInfo(), TM->getMCSubtargetInfo(),
@@ -151,14 +140,8 @@ FunctionPass *llvm::createFreeMachineFunctionPass() {
 }
 
 MachineModuleInfoWrapperPass::MachineModuleInfoWrapperPass(
-    const LLVMTargetMachine *TM)
-    : ImmutablePass(ID), MMI(TM) {
-  initializeMachineModuleInfoWrapperPassPass(*PassRegistry::getPassRegistry());
-}
-
-MachineModuleInfoWrapperPass::MachineModuleInfoWrapperPass(
-    const LLVMTargetMachine *TM, MCContext *ExtContext)
-    : ImmutablePass(ID), MMI(TM, ExtContext) {
+    MachineModuleInfo &MMI)
+    : ImmutablePass(ID), MMI(MMI) {
   initializeMachineModuleInfoWrapperPassPass(*PassRegistry::getPassRegistry());
 }
 

>From c2d984a2bb1323e389c6778689818149c4e2b939 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 17:28:58 -0400
Subject: [PATCH 02/21] Moved the MC pass creation functions from TargetMachine
 to LLVMTargetMachine.

---
 llvm/include/llvm/Target/TargetMachine.h | 51 ++++++------------------
 llvm/lib/CodeGen/LLVMTargetMachine.cpp   | 23 +++++------
 2 files changed, 22 insertions(+), 52 deletions(-)

diff --git a/llvm/include/llvm/Target/TargetMachine.h b/llvm/include/llvm/Target/TargetMachine.h
index c3e9d41315f617..ed04da6dcd9558 100644
--- a/llvm/include/llvm/Target/TargetMachine.h
+++ b/llvm/include/llvm/Target/TargetMachine.h
@@ -375,31 +375,6 @@ class TargetMachine {
   /// with the new pass manager. Only affects the "default" AAManager.
   virtual void registerDefaultAliasAnalyses(AAManager &) {}
 
-  /// Add passes to the specified pass manager to get the specified file
-  /// emitted.  Typically this will involve several steps of code generation.
-  /// This method should return true if emission of this file type is not
-  /// supported, or false on success.
-  /// \p MMIWP is an optional parameter that, if set to non-nullptr,
-  /// will be used to set the MachineModuloInfo for this PM.
-  virtual bool
-  addPassesToEmitFile(PassManagerBase &, raw_pwrite_stream &,
-                      raw_pwrite_stream *, CodeGenFileType,
-                      bool /*DisableVerify*/ = true,
-                      MachineModuleInfoWrapperPass *MMIWP = nullptr) {
-    return true;
-  }
-
-  /// Add passes to the specified pass manager to get machine code emitted with
-  /// the MCJIT. This method returns true if machine code is not supported. It
-  /// fills the MCContext Ctx pointer which can be used to build custom
-  /// MCStreamer.
-  ///
-  virtual bool addPassesToEmitMC(PassManagerBase &, MCContext *&,
-                                 raw_pwrite_stream &,
-                                 bool /*DisableVerify*/ = true) {
-    return true;
-  }
-
   /// True if subtarget inserts the final scheduling pass on its own.
   ///
   /// Branch relaxation, which must happen after block placement, can
@@ -460,14 +435,14 @@ class LLVMTargetMachine : public TargetMachine {
   virtual TargetPassConfig *createPassConfig(PassManagerBase &PM);
 
   /// Add passes to the specified pass manager to get the specified file
-  /// emitted.  Typically this will involve several steps of code generation.
-  /// \p MMIWP is an optional parameter that, if set to non-nullptr,
-  /// will be used to set the MachineModuloInfo for this PM.
-  bool
-  addPassesToEmitFile(PassManagerBase &PM, raw_pwrite_stream &Out,
-                      raw_pwrite_stream *DwoOut, CodeGenFileType FileType,
-                      bool DisableVerify = true,
-                      MachineModuleInfoWrapperPass *MMIWP = nullptr) override;
+  /// emitted. Typically this will involve several steps of code generation.
+  /// This method should return true if emission of this file type is not
+  /// supported, or false on success.
+  virtual bool addPassesToEmitFile(PassManagerBase &PM, MachineModuleInfo &MMI,
+                                   raw_pwrite_stream &Out,
+                                   raw_pwrite_stream *DwoOut,
+                                   CodeGenFileType FileType,
+                                   bool DisableVerify = true);
 
   virtual Error buildCodeGenPipeline(ModulePassManager &, raw_pwrite_stream &,
                                      raw_pwrite_stream *, CodeGenFileType,
@@ -478,12 +453,10 @@ class LLVMTargetMachine : public TargetMachine {
   }
 
   /// Add passes to the specified pass manager to get machine code emitted with
-  /// the MCJIT. This method returns true if machine code is not supported. It
-  /// fills the MCContext Ctx pointer which can be used to build custom
-  /// MCStreamer.
-  bool addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx,
-                         raw_pwrite_stream &Out,
-                         bool DisableVerify = true) override;
+  /// the MCJIT. This method returns true if machine code is not supported.
+  virtual bool addPassesToEmitMC(PassManagerBase &PM, MachineModuleInfo &MMI,
+                                 raw_pwrite_stream &Out,
+                                 bool DisableVerify = true);
 
   /// Returns true if the target is expected to pass all machine verifier
   /// checks. This is a stopgap measure to fix targets one by one. We will
diff --git a/llvm/lib/CodeGen/LLVMTargetMachine.cpp b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
index ea36fedef93ac6..6a005739d8dae5 100644
--- a/llvm/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
@@ -209,12 +209,10 @@ Expected<std::unique_ptr<MCStreamer>> LLVMTargetMachine::createMCStreamer(
 }
 
 bool LLVMTargetMachine::addPassesToEmitFile(
-    PassManagerBase &PM, raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut,
-    CodeGenFileType FileType, bool DisableVerify,
-    MachineModuleInfoWrapperPass *MMIWP) {
+    PassManagerBase &PM, MachineModuleInfo &MMI, raw_pwrite_stream &Out,
+    raw_pwrite_stream *DwoOut, CodeGenFileType FileType, bool DisableVerify) {
   // Add common CodeGen passes.
-  if (!MMIWP)
-    MMIWP = new MachineModuleInfoWrapperPass(this);
+  auto *MMIWP = new MachineModuleInfoWrapperPass(MMI);
   TargetPassConfig *PassConfig =
       addPassesToGenerateCode(*this, PM, DisableVerify, *MMIWP);
   if (!PassConfig)
@@ -235,14 +233,13 @@ bool LLVMTargetMachine::addPassesToEmitFile(
 
 /// addPassesToEmitMC - Add passes to the specified pass manager to get
 /// machine code emitted with the MCJIT. This method returns true if machine
-/// code is not supported. It fills the MCContext Ctx pointer which can be
-/// used to build custom MCStreamer.
-///
-bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx,
+/// code is not supported.
+bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM,
+                                          MachineModuleInfo &MMI,
                                           raw_pwrite_stream &Out,
                                           bool DisableVerify) {
   // Add common CodeGen passes.
-  MachineModuleInfoWrapperPass *MMIWP = new MachineModuleInfoWrapperPass(this);
+  MachineModuleInfoWrapperPass *MMIWP = new MachineModuleInfoWrapperPass(MMI);
   TargetPassConfig *PassConfig =
       addPassesToGenerateCode(*this, PM, DisableVerify, *MMIWP);
   if (!PassConfig)
@@ -250,7 +247,7 @@ bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx,
   assert(TargetPassConfig::willCompleteCodeGenPipeline() &&
          "Cannot emit MC with limited codegen pipeline");
 
-  Ctx = &MMIWP->getMMI().getContext();
+  auto &Ctx = MMI.getContext();
   // libunwind is unable to load compact unwind dynamically, so we must generate
   // DWARF unwind info for the JIT.
   Options.MCOptions.EmitDwarfUnwind = EmitDwarfUnwindType::Always;
@@ -260,7 +257,7 @@ bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx,
   const MCSubtargetInfo &STI = *getMCSubtargetInfo();
   const MCRegisterInfo &MRI = *getMCRegisterInfo();
   std::unique_ptr<MCCodeEmitter> MCE(
-      getTarget().createMCCodeEmitter(*getMCInstrInfo(), *Ctx));
+      getTarget().createMCCodeEmitter(*getMCInstrInfo(), Ctx));
   if (!MCE)
     return true;
   MCAsmBackend *MAB =
@@ -270,7 +267,7 @@ bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx,
 
   const Triple &T = getTargetTriple();
   std::unique_ptr<MCStreamer> AsmStreamer(getTarget().createMCObjectStreamer(
-      T, *Ctx, std::unique_ptr<MCAsmBackend>(MAB), MAB->createObjectWriter(Out),
+      T, Ctx, std::unique_ptr<MCAsmBackend>(MAB), MAB->createObjectWriter(Out),
       std::move(MCE), STI));
 
   // Create the AsmPrinter, which takes ownership of AsmStreamer if successful.

>From ed403875e586430d61423dfa2031ad9c865fc76f Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 17:35:37 -0400
Subject: [PATCH 03/21] Migrated BackendUtil.cpp to the new LLVMTargetMachine
 code emission API.

---
 clang/lib/CodeGen/BackendUtil.cpp | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 62c6a57e8b7c80..a6abbc492350c3 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -26,6 +26,7 @@
 #include "llvm/Bitcode/BitcodeReader.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
 #include "llvm/Bitcode/BitcodeWriterPass.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/RegAllocRegistry.h"
 #include "llvm/CodeGen/SchedulerRegistry.h"
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
@@ -167,8 +168,9 @@ class EmitAssemblyHelper {
   /// Add passes necessary to emit assembly or LLVM IR.
   ///
   /// \return True on success.
-  bool AddEmitPasses(legacy::PassManager &CodeGenPasses, BackendAction Action,
-                     raw_pwrite_stream &OS, raw_pwrite_stream *DwoOS);
+  bool AddEmitPasses(legacy::PassManager &CodeGenPasses, MachineModuleInfo &MMI,
+                     BackendAction Action, raw_pwrite_stream &OS,
+                     raw_pwrite_stream *DwoOS);
 
   std::unique_ptr<llvm::ToolOutputFile> openOutputFile(StringRef Path) {
     std::error_code EC;
@@ -223,7 +225,7 @@ class EmitAssemblyHelper {
       BuryPointer(std::move(TM));
   }
 
-  std::unique_ptr<TargetMachine> TM;
+  std::unique_ptr<LLVMTargetMachine> TM;
 
   // Emit output using the new pass manager for the optimization pipeline.
   void EmitAssembly(BackendAction Action, std::unique_ptr<raw_pwrite_stream> OS,
@@ -607,12 +609,13 @@ void EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) {
   if (!initTargetOptions(Diags, Options, CodeGenOpts, TargetOpts, LangOpts,
                          HSOpts))
     return;
-  TM.reset(TheTarget->createTargetMachine(Triple, TargetOpts.CPU, FeaturesStr,
-                                          Options, RM, CM, OptLevel));
+  TM.reset(static_cast<LLVMTargetMachine *>(TheTarget->createTargetMachine(
+      Triple, TargetOpts.CPU, FeaturesStr, Options, RM, CM, OptLevel)));
   TM->setLargeDataThreshold(CodeGenOpts.LargeDataThreshold);
 }
 
 bool EmitAssemblyHelper::AddEmitPasses(legacy::PassManager &CodeGenPasses,
+                                       MachineModuleInfo &MMI,
                                        BackendAction Action,
                                        raw_pwrite_stream &OS,
                                        raw_pwrite_stream *DwoOS) {
@@ -625,7 +628,7 @@ bool EmitAssemblyHelper::AddEmitPasses(legacy::PassManager &CodeGenPasses,
   // this also adds codegenerator level optimization passes.
   CodeGenFileType CGFT = getCodeGenFileType(Action);
 
-  if (TM->addPassesToEmitFile(CodeGenPasses, OS, DwoOS, CGFT,
+  if (TM->addPassesToEmitFile(CodeGenPasses, MMI, OS, DwoOS, CGFT,
                               /*DisableVerify=*/!CodeGenOpts.VerifyModule)) {
     Diags.Report(diag::err_fe_unable_to_interface_with_target);
     return false;
@@ -1162,6 +1165,7 @@ void EmitAssemblyHelper::RunCodegenPipeline(
   // does not work with the codegen pipeline.
   // FIXME: make the new PM work with the codegen pipeline.
   legacy::PassManager CodeGenPasses;
+  std::unique_ptr<MachineModuleInfo> MMI;
 
   // Append any output we need to the pass manager.
   switch (Action) {
@@ -1175,7 +1179,8 @@ void EmitAssemblyHelper::RunCodegenPipeline(
       if (!DwoOS)
         return;
     }
-    if (!AddEmitPasses(CodeGenPasses, Action, *OS,
+    MMI = std::make_unique<MachineModuleInfo>(TM.get());
+    if (!AddEmitPasses(CodeGenPasses, *MMI, Action, *OS,
                        DwoOS ? &DwoOS->os() : nullptr))
       // FIXME: Should we handle this error differently?
       return;

>From 75dd38a6e4d80b06cde3ee4c3b5f475e8a2932c4 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 17:46:11 -0400
Subject: [PATCH 04/21] Migrated DeviceOffload.cpp to the new LLVMTargetMachine
 code emission API.

---
 clang/lib/Interpreter/DeviceOffload.cpp | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/clang/lib/Interpreter/DeviceOffload.cpp b/clang/lib/Interpreter/DeviceOffload.cpp
index 1999d63d1aa047..7b072832717dd3 100644
--- a/clang/lib/Interpreter/DeviceOffload.cpp
+++ b/clang/lib/Interpreter/DeviceOffload.cpp
@@ -17,6 +17,7 @@
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Interpreter/PartialTranslationUnit.h"
 
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/MC/TargetRegistry.h"
@@ -82,16 +83,18 @@ llvm::Expected<llvm::StringRef> IncrementalCUDADeviceParser::GeneratePTX() {
     return llvm::make_error<llvm::StringError>(std::move(Error),
                                                std::error_code());
   llvm::TargetOptions TO = llvm::TargetOptions();
-  llvm::TargetMachine *TargetMachine = Target->createTargetMachine(
-      PTU.TheModule->getTargetTriple(), TargetOpts.CPU, "", TO,
-      llvm::Reloc::Model::PIC_);
+  llvm::LLVMTargetMachine *TargetMachine =
+      static_cast<llvm::LLVMTargetMachine *>(Target->createTargetMachine(
+          PTU.TheModule->getTargetTriple(), TargetOpts.CPU, "", TO,
+          llvm::Reloc::Model::PIC_));
   PTU.TheModule->setDataLayout(TargetMachine->createDataLayout());
 
   PTXCode.clear();
   llvm::raw_svector_ostream dest(PTXCode);
 
   llvm::legacy::PassManager PM;
-  if (TargetMachine->addPassesToEmitFile(PM, dest, nullptr,
+  llvm::MachineModuleInfo MMI(TargetMachine);
+  if (TargetMachine->addPassesToEmitFile(PM, MMI, dest, nullptr,
                                          llvm::CodeGenFileType::AssemblyFile)) {
     return llvm::make_error<llvm::StringError>(
         "NVPTX backend cannot produce PTX code.",

>From 00be9bf9f645c031ad38b85c1cc2d1ca35ebed0e Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 17:48:30 -0400
Subject: [PATCH 05/21] Migrated Wasm.cpp to the new LLVMTargetMachine code
 emission API.

---
 clang/lib/Interpreter/DeviceOffload.cpp | 2 +-
 clang/lib/Interpreter/Wasm.cpp          | 9 ++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/clang/lib/Interpreter/DeviceOffload.cpp b/clang/lib/Interpreter/DeviceOffload.cpp
index 7b072832717dd3..fd4a31ef8135e3 100644
--- a/clang/lib/Interpreter/DeviceOffload.cpp
+++ b/clang/lib/Interpreter/DeviceOffload.cpp
@@ -83,7 +83,7 @@ llvm::Expected<llvm::StringRef> IncrementalCUDADeviceParser::GeneratePTX() {
     return llvm::make_error<llvm::StringError>(std::move(Error),
                                                std::error_code());
   llvm::TargetOptions TO = llvm::TargetOptions();
-  llvm::LLVMTargetMachine *TargetMachine =
+  auto *TargetMachine =
       static_cast<llvm::LLVMTargetMachine *>(Target->createTargetMachine(
           PTU.TheModule->getTargetTriple(), TargetOpts.CPU, "", TO,
           llvm::Reloc::Model::PIC_));
diff --git a/clang/lib/Interpreter/Wasm.cpp b/clang/lib/Interpreter/Wasm.cpp
index 1001410aa0f279..863fab9fd6fa3b 100644
--- a/clang/lib/Interpreter/Wasm.cpp
+++ b/clang/lib/Interpreter/Wasm.cpp
@@ -13,6 +13,7 @@
 #include "Wasm.h"
 #include "IncrementalExecutor.h"
 
+#include <llvm/CodeGen/MachineModuleInfo.h>
 #include <llvm/IR/LegacyPassManager.h>
 #include <llvm/IR/Module.h>
 #include <llvm/MC/TargetRegistry.h>
@@ -48,8 +49,9 @@ llvm::Error WasmIncrementalExecutor::addModule(PartialTranslationUnit &PTU) {
   }
 
   llvm::TargetOptions TO = llvm::TargetOptions();
-  llvm::TargetMachine *TargetMachine = Target->createTargetMachine(
-      PTU.TheModule->getTargetTriple(), "", "", TO, llvm::Reloc::Model::PIC_);
+  auto *TargetMachine = static_cast<llvm::LLVMTargetMachine *>(
+      Target->createTargetMachine(PTU.TheModule->getTargetTriple(), "", "", TO,
+                                  llvm::Reloc::Model::PIC_));
   PTU.TheModule->setDataLayout(TargetMachine->createDataLayout());
   std::string OutputFileName = PTU.TheModule->getName().str() + ".wasm";
 
@@ -57,7 +59,8 @@ llvm::Error WasmIncrementalExecutor::addModule(PartialTranslationUnit &PTU) {
   llvm::raw_fd_ostream OutputFile(llvm::StringRef(OutputFileName), Error);
 
   llvm::legacy::PassManager PM;
-  if (TargetMachine->addPassesToEmitFile(PM, OutputFile, nullptr,
+  llvm::MachineModuleInfo MMI(TargetMachine);
+  if (TargetMachine->addPassesToEmitFile(PM, MMI, OutputFile, nullptr,
                                          llvm::CodeGenFileType::ObjectFile)) {
     return llvm::make_error<llvm::StringError>(
         "Wasm backend cannot produce object.", llvm::inconvertibleErrorCode());

>From 7bee39f22e6d44912af88005766c16c55a60494b Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 17:52:21 -0400
Subject: [PATCH 06/21] Migrated ClangLinkerWrapper.cpp to the new
 LLVMTargetMachine code emission API.

---
 clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
index 9fea1fdcd5fb46..f1baa98ec5fe94 100644
--- a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
+++ b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
@@ -20,6 +20,7 @@
 #include "llvm/BinaryFormat/Magic.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
 #include "llvm/CodeGen/CommandFlags.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/Frontend/Offloading/OffloadWrapper.h"
 #include "llvm/Frontend/Offloading/Utility.h"
 #include "llvm/IR/Constants.h"
@@ -1031,9 +1032,9 @@ Expected<StringRef> compileModule(Module &M, OffloadKind Kind) {
       codegen::InitTargetOptionsFromCodeGenFlags(Triple(M.getTargetTriple()));
   StringRef CPU = "";
   StringRef Features = "";
-  std::unique_ptr<TargetMachine> TM(
+  std::unique_ptr<LLVMTargetMachine> TM(static_cast<LLVMTargetMachine *>(
       T->createTargetMachine(M.getTargetTriple(), CPU, Features, Options,
-                             Reloc::PIC_, M.getCodeModel()));
+                             Reloc::PIC_, M.getCodeModel())));
 
   if (M.getDataLayout().isDefault())
     M.setDataLayout(TM->createDataLayout());
@@ -1051,9 +1052,10 @@ Expected<StringRef> compileModule(Module &M, OffloadKind Kind) {
   auto OS = std::make_unique<llvm::raw_fd_ostream>(FD, true);
 
   legacy::PassManager CodeGenPasses;
+  MachineModuleInfo MMI(TM.get());
   TargetLibraryInfoImpl TLII(Triple(M.getTargetTriple()));
   CodeGenPasses.add(new TargetLibraryInfoWrapperPass(TLII));
-  if (TM->addPassesToEmitFile(CodeGenPasses, *OS, nullptr,
+  if (TM->addPassesToEmitFile(CodeGenPasses, MMI, *OS, nullptr,
                               CodeGenFileType::ObjectFile))
     return createStringError("Failed to execute host backend");
   CodeGenPasses.run(M);

>From d9fcf4881c092bc34f614e77960c66af4bcc29dd Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 17:58:27 -0400
Subject: [PATCH 07/21] Migrated FrontendActions.cpp to the new
 LLVMTargetMachine code emission API.

---
 flang/lib/Frontend/FrontendActions.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/flang/lib/Frontend/FrontendActions.cpp b/flang/lib/Frontend/FrontendActions.cpp
index 4a52edc436e0ed..eaf42b993aaddb 100644
--- a/flang/lib/Frontend/FrontendActions.cpp
+++ b/flang/lib/Frontend/FrontendActions.cpp
@@ -52,6 +52,7 @@
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/Bitcode/BitcodeWriterPass.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"
 #include "llvm/IR/LLVMRemarkStreamer.h"
 #include "llvm/IR/LegacyPassManager.h"
@@ -919,7 +920,7 @@ getOutputStream(CompilerInstance &ci, llvm::StringRef inFile,
 /// \param [in] codeGenOpts options configuring codegen pipeline
 /// \param [out] os Output stream to emit the generated code to
 static void generateMachineCodeOrAssemblyImpl(clang::DiagnosticsEngine &diags,
-                                              llvm::TargetMachine &tm,
+                                              llvm::LLVMTargetMachine &tm,
                                               BackendActionTy act,
                                               llvm::Module &llvmModule,
                                               const CodeGenOptions &codeGenOpts,
@@ -932,6 +933,7 @@ static void generateMachineCodeOrAssemblyImpl(clang::DiagnosticsEngine &diags,
   // Currently only the legacy pass manager is supported.
   // TODO: Switch to the new PM once it's available in the backend.
   llvm::legacy::PassManager codeGenPasses;
+  llvm::MachineModuleInfo mmi(&tm);
   codeGenPasses.add(
       createTargetTransformInfoWrapperPass(tm.getTargetIRAnalysis()));
 
@@ -943,7 +945,7 @@ static void generateMachineCodeOrAssemblyImpl(clang::DiagnosticsEngine &diags,
   llvm::CodeGenFileType cgft = (act == BackendActionTy::Backend_EmitAssembly)
                                    ? llvm::CodeGenFileType::AssemblyFile
                                    : llvm::CodeGenFileType::ObjectFile;
-  if (tm.addPassesToEmitFile(codeGenPasses, os, nullptr, cgft)) {
+  if (tm.addPassesToEmitFile(codeGenPasses, mmi, os, nullptr, cgft)) {
     unsigned diagID =
         diags.getCustomDiagID(clang::DiagnosticsEngine::Error,
                               "emission of this file type is not supported");
@@ -1369,7 +1371,8 @@ void CodeGenAction::executeAction() {
   if (action == BackendActionTy::Backend_EmitAssembly ||
       action == BackendActionTy::Backend_EmitObj) {
     generateMachineCodeOrAssemblyImpl(
-        diags, targetMachine, action, *llvmModule, codeGenOpts,
+        diags, *static_cast<llvm::LLVMTargetMachine *>(&targetMachine), action,
+        *llvmModule, codeGenOpts,
         ci.isOutputStreamNull() ? *os : ci.getOutputStream());
     return;
   }

>From 631cbb219c78aa7d38a5f61a49d27c07560395b5 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 18:11:28 -0400
Subject: [PATCH 08/21] Migrated MCJIT.cpp to the new LLVMTargetMachine code
 emission API.

---
 llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp b/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp
index 4cce4a77b343f0..78b7fcedcda618 100644
--- a/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp
+++ b/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp
@@ -8,6 +8,7 @@
 
 #include "MCJIT.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/ExecutionEngine/GenericValue.h"
 #include "llvm/ExecutionEngine/JITEventListener.h"
 #include "llvm/ExecutionEngine/MCJIT.h"
@@ -157,6 +158,9 @@ std::unique_ptr<MemoryBuffer> MCJIT::emitObject(Module *M) {
   // generateCodeForModule.
 
   legacy::PassManager PM;
+  auto * LLVMTM = static_cast<LLVMTargetMachine*>(TM.get());
+  MachineModuleInfo MMI(LLVMTM);
+  Ctx = &MMI.getContext();
 
   // The RuntimeDyld will take ownership of this shortly
   SmallVector<char, 4096> ObjBufferSV;
@@ -164,7 +168,7 @@ std::unique_ptr<MemoryBuffer> MCJIT::emitObject(Module *M) {
 
   // Turn the machine code intermediate representation into bytes in memory
   // that may be executed.
-  if (TM->addPassesToEmitMC(PM, Ctx, ObjStream, !getVerifyModules()))
+  if (LLVMTM->addPassesToEmitMC(PM, MMI, ObjStream, !getVerifyModules()))
     report_fatal_error("Target does not support MC emission!");
 
   // Initialize passes.

>From e8e81db1ee8bd730f6769073c66eb529bdff3972 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 18:14:28 -0400
Subject: [PATCH 09/21] Migrated CompileUtils.cpp to the new LLVMTargetMachine
 code emission API.

---
 llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp b/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp
index fad7428e1f906c..b696518813bc38 100644
--- a/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp
@@ -9,6 +9,7 @@
 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
 
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/ExecutionEngine/ObjectCache.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
@@ -46,8 +47,9 @@ Expected<SimpleCompiler::CompileResult> SimpleCompiler::operator()(Module &M) {
     raw_svector_ostream ObjStream(ObjBufferSV);
 
     legacy::PassManager PM;
-    MCContext *Ctx;
-    if (TM.addPassesToEmitMC(PM, Ctx, ObjStream))
+    auto *LLVMTM = static_cast<LLVMTargetMachine *>(&TM);
+    MachineModuleInfo MMI(LLVMTM);
+    if (LLVMTM->addPassesToEmitMC(PM, MMI, ObjStream))
       return make_error<StringError>("Target does not support MC emission",
                                      inconvertibleErrorCode());
     PM.run(M);

>From 4cfc73eb39b076c9a26ebe9a263ef8c5634998a3 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 18:36:47 -0400
Subject: [PATCH 10/21] Moved the MC emission APIs to TargetMachine again to
 keep the PR changes to a minimum.

---
 clang/lib/CodeGen/BackendUtil.cpp             |  9 ++---
 flang/lib/Frontend/FrontendActions.cpp        |  7 ++--
 llvm/include/llvm/Target/TargetMachine.h      | 34 ++++++++++++++-----
 llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp |  5 ++-
 llvm/lib/LTO/LTOBackend.cpp                   |  1 +
 5 files changed, 37 insertions(+), 19 deletions(-)

diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index a6abbc492350c3..34e58c1f8cd93c 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -225,7 +225,7 @@ class EmitAssemblyHelper {
       BuryPointer(std::move(TM));
   }
 
-  std::unique_ptr<LLVMTargetMachine> TM;
+  std::unique_ptr<TargetMachine> TM;
 
   // Emit output using the new pass manager for the optimization pipeline.
   void EmitAssembly(BackendAction Action, std::unique_ptr<raw_pwrite_stream> OS,
@@ -609,8 +609,8 @@ void EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) {
   if (!initTargetOptions(Diags, Options, CodeGenOpts, TargetOpts, LangOpts,
                          HSOpts))
     return;
-  TM.reset(static_cast<LLVMTargetMachine *>(TheTarget->createTargetMachine(
-      Triple, TargetOpts.CPU, FeaturesStr, Options, RM, CM, OptLevel)));
+  TM.reset(TheTarget->createTargetMachine(Triple, TargetOpts.CPU, FeaturesStr,
+                                          Options, RM, CM, OptLevel));
   TM->setLargeDataThreshold(CodeGenOpts.LargeDataThreshold);
 }
 
@@ -1179,7 +1179,8 @@ void EmitAssemblyHelper::RunCodegenPipeline(
       if (!DwoOS)
         return;
     }
-    MMI = std::make_unique<MachineModuleInfo>(TM.get());
+    MMI = std::make_unique<MachineModuleInfo>(
+        static_cast<LLVMTargetMachine *>(TM.get()));
     if (!AddEmitPasses(CodeGenPasses, *MMI, Action, *OS,
                        DwoOS ? &DwoOS->os() : nullptr))
       // FIXME: Should we handle this error differently?
diff --git a/flang/lib/Frontend/FrontendActions.cpp b/flang/lib/Frontend/FrontendActions.cpp
index eaf42b993aaddb..64aba542b0d1f2 100644
--- a/flang/lib/Frontend/FrontendActions.cpp
+++ b/flang/lib/Frontend/FrontendActions.cpp
@@ -920,7 +920,7 @@ getOutputStream(CompilerInstance &ci, llvm::StringRef inFile,
 /// \param [in] codeGenOpts options configuring codegen pipeline
 /// \param [out] os Output stream to emit the generated code to
 static void generateMachineCodeOrAssemblyImpl(clang::DiagnosticsEngine &diags,
-                                              llvm::LLVMTargetMachine &tm,
+                                              llvm::TargetMachine &tm,
                                               BackendActionTy act,
                                               llvm::Module &llvmModule,
                                               const CodeGenOptions &codeGenOpts,
@@ -933,7 +933,7 @@ static void generateMachineCodeOrAssemblyImpl(clang::DiagnosticsEngine &diags,
   // Currently only the legacy pass manager is supported.
   // TODO: Switch to the new PM once it's available in the backend.
   llvm::legacy::PassManager codeGenPasses;
-  llvm::MachineModuleInfo mmi(&tm);
+  llvm::MachineModuleInfo mmi(static_cast<llvm::LLVMTargetMachine *>(&tm));
   codeGenPasses.add(
       createTargetTransformInfoWrapperPass(tm.getTargetIRAnalysis()));
 
@@ -1371,8 +1371,7 @@ void CodeGenAction::executeAction() {
   if (action == BackendActionTy::Backend_EmitAssembly ||
       action == BackendActionTy::Backend_EmitObj) {
     generateMachineCodeOrAssemblyImpl(
-        diags, *static_cast<llvm::LLVMTargetMachine *>(&targetMachine), action,
-        *llvmModule, codeGenOpts,
+        diags, targetMachine, action, *llvmModule, codeGenOpts,
         ci.isOutputStreamNull() ? *os : ci.getOutputStream());
     return;
   }
diff --git a/llvm/include/llvm/Target/TargetMachine.h b/llvm/include/llvm/Target/TargetMachine.h
index ed04da6dcd9558..267971cd89a5d5 100644
--- a/llvm/include/llvm/Target/TargetMachine.h
+++ b/llvm/include/llvm/Target/TargetMachine.h
@@ -375,6 +375,25 @@ class TargetMachine {
   /// with the new pass manager. Only affects the "default" AAManager.
   virtual void registerDefaultAliasAnalyses(AAManager &) {}
 
+  /// Add passes to the specified pass manager to get the specified file
+  /// emitted. Typically this will involve several steps of code generation.
+  /// This method should return true if emission of this file type is not
+  /// supported, or false on success.
+  virtual bool addPassesToEmitFile(PassManagerBase &, MachineModuleInfo &,
+                                   raw_pwrite_stream &, raw_pwrite_stream *,
+                                   CodeGenFileType,
+                                   bool /*DisableVerify*/ = true) {
+    return true;
+  }
+
+  /// Add passes to the specified pass manager to get machine code emitted with
+  /// the MCJIT. This method returns true if machine code is not supported.
+  virtual bool addPassesToEmitMC(PassManagerBase &, MachineModuleInfo &,
+                                 raw_pwrite_stream &,
+                                 bool /*DisableVerify*/ = true) {
+    return true;
+  }
+
   /// True if subtarget inserts the final scheduling pass on its own.
   ///
   /// Branch relaxation, which must happen after block placement, can
@@ -438,11 +457,10 @@ class LLVMTargetMachine : public TargetMachine {
   /// emitted. Typically this will involve several steps of code generation.
   /// This method should return true if emission of this file type is not
   /// supported, or false on success.
-  virtual bool addPassesToEmitFile(PassManagerBase &PM, MachineModuleInfo &MMI,
-                                   raw_pwrite_stream &Out,
-                                   raw_pwrite_stream *DwoOut,
-                                   CodeGenFileType FileType,
-                                   bool DisableVerify = true);
+  bool addPassesToEmitFile(PassManagerBase &PM, MachineModuleInfo &MMI,
+                           raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut,
+                           CodeGenFileType FileType,
+                           bool DisableVerify = true) override;
 
   virtual Error buildCodeGenPipeline(ModulePassManager &, raw_pwrite_stream &,
                                      raw_pwrite_stream *, CodeGenFileType,
@@ -454,9 +472,9 @@ class LLVMTargetMachine : public TargetMachine {
 
   /// Add passes to the specified pass manager to get machine code emitted with
   /// the MCJIT. This method returns true if machine code is not supported.
-  virtual bool addPassesToEmitMC(PassManagerBase &PM, MachineModuleInfo &MMI,
-                                 raw_pwrite_stream &Out,
-                                 bool DisableVerify = true);
+  bool addPassesToEmitMC(PassManagerBase &PM, MachineModuleInfo &MMI,
+                         raw_pwrite_stream &Out,
+                         bool DisableVerify = true) override;
 
   /// Returns true if the target is expected to pass all machine verifier
   /// checks. This is a stopgap measure to fix targets one by one. We will
diff --git a/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp b/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp
index b696518813bc38..e65d387b41fd21 100644
--- a/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/CompileUtils.cpp
@@ -47,9 +47,8 @@ Expected<SimpleCompiler::CompileResult> SimpleCompiler::operator()(Module &M) {
     raw_svector_ostream ObjStream(ObjBufferSV);
 
     legacy::PassManager PM;
-    auto *LLVMTM = static_cast<LLVMTargetMachine *>(&TM);
-    MachineModuleInfo MMI(LLVMTM);
-    if (LLVMTM->addPassesToEmitMC(PM, MMI, ObjStream))
+    MachineModuleInfo MMI(static_cast<LLVMTargetMachine *>(&TM));
+    if (TM.addPassesToEmitMC(PM, MMI, ObjStream))
       return make_error<StringError>("Target does not support MC emission",
                                      inconvertibleErrorCode());
     PM.run(M);
diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
index 4e58cd369c3ac9..d739334c733088 100644
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -20,6 +20,7 @@
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Bitcode/BitcodeReader.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/LLVMRemarkStreamer.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/PassManager.h"

>From 4ca0afb9774a3f71c4013aee8b3cf0b84dd42b78 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 18:38:34 -0400
Subject: [PATCH 11/21] Migrated LTOBackend.cpp to use the new TargetMachine MC
 emission API.

---
 llvm/lib/LTO/LTOBackend.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
index d739334c733088..15b5daea7f11a6 100644
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -418,13 +418,14 @@ static void codegen(const Config &Conf, TargetMachine *TM,
   TM->Options.ObjectFilenameForDebug = Stream->ObjectPathName;
 
   legacy::PassManager CodeGenPasses;
+  MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(TM));
   TargetLibraryInfoImpl TLII(Triple(Mod.getTargetTriple()));
   CodeGenPasses.add(new TargetLibraryInfoWrapperPass(TLII));
   CodeGenPasses.add(
       createImmutableModuleSummaryIndexWrapperPass(&CombinedIndex));
   if (Conf.PreCodeGenPassesHook)
     Conf.PreCodeGenPassesHook(CodeGenPasses);
-  if (TM->addPassesToEmitFile(CodeGenPasses, *Stream->OS,
+  if (TM->addPassesToEmitFile(CodeGenPasses, MMI, *Stream->OS,
                               DwoOut ? &DwoOut->os() : nullptr,
                               Conf.CGFileType))
     report_fatal_error("Failed to setup codegen");

>From b33936cc76685d69c2b1e83e344abdb3fb185d24 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 18:40:18 -0400
Subject: [PATCH 12/21] Migrated ThinLTOCodeGenerator.cpp to use the new
 TargetMachine MC emission API.

---
 llvm/lib/LTO/ThinLTOCodeGenerator.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/LTO/ThinLTOCodeGenerator.cpp b/llvm/lib/LTO/ThinLTOCodeGenerator.cpp
index 76268c950cf581..4b522a4f3cbf4a 100644
--- a/llvm/lib/LTO/ThinLTOCodeGenerator.cpp
+++ b/llvm/lib/LTO/ThinLTOCodeGenerator.cpp
@@ -24,6 +24,7 @@
 #include "llvm/Bitcode/BitcodeReader.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
 #include "llvm/Bitcode/BitcodeWriterPass.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/Config/llvm-config.h"
 #include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/DiagnosticPrinter.h"
@@ -333,9 +334,11 @@ std::unique_ptr<MemoryBuffer> codegenModule(Module &TheModule,
   {
     raw_svector_ostream OS(OutputBuffer);
     legacy::PassManager PM;
+    MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(&TM));
 
     // Setup the codegen now.
-    if (TM.addPassesToEmitFile(PM, OS, nullptr, CodeGenFileType::ObjectFile,
+    if (TM.addPassesToEmitFile(PM, MMI, OS, nullptr,
+                               CodeGenFileType::ObjectFile,
                                /* DisableVerify */ true))
       report_fatal_error("Failed to setup codegen");
 

>From e945366963b29958deb9db553589ab40ab2aa80f Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 18:41:31 -0400
Subject: [PATCH 13/21] Migrated NVPTXTargetMachine.h to use the new
 TargetMachine MC emission API.

---
 llvm/lib/Target/NVPTX/NVPTXTargetMachine.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h
index 2b88da67a50f95..b6e5f3adb97ed9 100644
--- a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h
+++ b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h
@@ -52,8 +52,8 @@ class NVPTXTargetMachine : public LLVMTargetMachine {
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
 
   // Emission of machine code through MCJIT is not supported.
-  bool addPassesToEmitMC(PassManagerBase &, MCContext *&, raw_pwrite_stream &,
-                         bool = true) override {
+  bool addPassesToEmitMC(PassManagerBase &, MachineModuleInfo &,
+                         raw_pwrite_stream &, bool = true) override {
     return true;
   }
   TargetLoweringObjectFile *getObjFileLowering() const override {

>From 737685e4e09c3be8a56566e436a7ae28771e2dcc Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 19:24:52 -0400
Subject: [PATCH 14/21] Migrated the remaining test files to the new MMIWP
 constructor.

---
 llvm/lib/Target/TargetMachineC.cpp               |  4 +++-
 llvm/tools/llc/llc.cpp                           | 14 +++++++-------
 llvm/tools/llvm-exegesis/lib/Assembler.cpp       | 12 ++++++------
 llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp |  4 +++-
 llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp    |  4 +++-
 llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp   |  6 ++++--
 llvm/unittests/MI/LiveIntervalTest.cpp           | 11 ++++++-----
 7 files changed, 32 insertions(+), 23 deletions(-)

diff --git a/llvm/lib/Target/TargetMachineC.cpp b/llvm/lib/Target/TargetMachineC.cpp
index d12fc65047d043..5a2918827a6255 100644
--- a/llvm/lib/Target/TargetMachineC.cpp
+++ b/llvm/lib/Target/TargetMachineC.cpp
@@ -13,6 +13,7 @@
 #include "llvm-c/Core.h"
 #include "llvm-c/TargetMachine.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
@@ -295,6 +296,7 @@ static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
   Module* Mod = unwrap(M);
 
   legacy::PassManager pass;
+  MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(TM));
 
   std::string error;
 
@@ -309,7 +311,7 @@ static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
       ft = CodeGenFileType::ObjectFile;
       break;
   }
-  if (TM->addPassesToEmitFile(pass, OS, nullptr, ft)) {
+  if (TM->addPassesToEmitFile(pass, MMI, OS, nullptr, ft)) {
     error = "TargetMachine can't emit a file of this type";
     *ErrorMessage = strdup(error.c_str());
     return true;
diff --git a/llvm/tools/llc/llc.cpp b/llvm/tools/llc/llc.cpp
index 2c1901cdd49d8b..21c492c87e2e87 100644
--- a/llvm/tools/llc/llc.cpp
+++ b/llvm/tools/llc/llc.cpp
@@ -687,12 +687,13 @@ static int compileModule(char **argv, LLVMContext &Context) {
 
     const char *argv0 = argv[0];
     LLVMTargetMachine &LLVMTM = static_cast<LLVMTargetMachine &>(*Target);
-    MachineModuleInfoWrapperPass *MMIWP =
-        new MachineModuleInfoWrapperPass(&LLVMTM);
+    MachineModuleInfo MMI(&LLVMTM);
 
     // Construct a custom pass pipeline that starts after instruction
     // selection.
     if (!getRunPassNames().empty()) {
+      auto *MMIWP =
+          new MachineModuleInfoWrapperPass(MMI);
       if (!MIR) {
         WithColor::warning(errs(), argv[0])
             << "run-pass is for .mir file only.\n";
@@ -722,16 +723,15 @@ static int compileModule(char **argv, LLVMContext &Context) {
       PM.add(createPrintMIRPass(*OS));
       PM.add(createFreeMachineFunctionPass());
     } else if (Target->addPassesToEmitFile(
-                   PM, *OS, DwoOut ? &DwoOut->os() : nullptr,
-                   codegen::getFileType(), NoVerify, MMIWP)) {
+                   PM, MMI, *OS, DwoOut ? &DwoOut->os() : nullptr,
+                   codegen::getFileType(), NoVerify)) {
       reportError("target does not support generation of this file type");
     }
 
     const_cast<TargetLoweringObjectFile *>(LLVMTM.getObjFileLowering())
-        ->Initialize(MMIWP->getMMI().getContext(), *Target);
+        ->Initialize(MMI.getContext(), *Target);
     if (MIR) {
-      assert(MMIWP && "Forgot to create MMIWP?");
-      if (MIR->parseMachineFunctions(*M, MMIWP->getMMI()))
+      if (MIR->parseMachineFunctions(*M, MMI))
         return 1;
     }
 
diff --git a/llvm/tools/llvm-exegesis/lib/Assembler.cpp b/llvm/tools/llvm-exegesis/lib/Assembler.cpp
index 92ab3a96d91e6b..4472186d6a55b9 100644
--- a/llvm/tools/llvm-exegesis/lib/Assembler.cpp
+++ b/llvm/tools/llvm-exegesis/lib/Assembler.cpp
@@ -234,9 +234,9 @@ BitVector getFunctionReservedRegs(const TargetMachine &TM) {
   std::unique_ptr<Module> Module = createModule(Context, TM.createDataLayout());
   // TODO: This only works for targets implementing LLVMTargetMachine.
   const LLVMTargetMachine &LLVMTM = static_cast<const LLVMTargetMachine &>(TM);
-  auto MMIWP = std::make_unique<MachineModuleInfoWrapperPass>(&LLVMTM);
+  MachineModuleInfo MMI(&LLVMTM);
   MachineFunction &MF = createVoidVoidPtrMachineFunction(
-      FunctionID, Module.get(), &MMIWP->getMMI());
+      FunctionID, Module.get(), &MMI);
   // Saving reserved registers for client.
   return MF.getSubtarget().getRegisterInfo()->getReservedRegs(MF);
 }
@@ -249,9 +249,9 @@ Error assembleToStream(const ExegesisTarget &ET,
   auto Context = std::make_unique<LLVMContext>();
   std::unique_ptr<Module> Module =
       createModule(Context, TM->createDataLayout());
-  auto MMIWP = std::make_unique<MachineModuleInfoWrapperPass>(TM.get());
+  MachineModuleInfo MMI(TM.get());
   MachineFunction &MF = createVoidVoidPtrMachineFunction(
-      FunctionID, Module.get(), &MMIWP.get()->getMMI());
+      FunctionID, Module.get(), &MMI);
   MF.ensureAlignment(kFunctionAlignment);
 
   // We need to instruct the passes that we're done with SSA and virtual
@@ -308,7 +308,7 @@ Error assembleToStream(const ExegesisTarget &ET,
   MF.getRegInfo().freezeReservedRegs();
 
   // We create the pass manager, run the passes to populate AsmBuffer.
-  MCContext &MCContext = MMIWP->getMMI().getContext();
+  MCContext &MCContext = MMI.getContext();
   legacy::PassManager PM;
 
   TargetLibraryInfoImpl TLII(Triple(Module->getTargetTriple()));
@@ -316,7 +316,7 @@ Error assembleToStream(const ExegesisTarget &ET,
 
   TargetPassConfig *TPC = TM->createPassConfig(PM);
   PM.add(TPC);
-  PM.add(MMIWP.release());
+  PM.add(new llvm::MachineModuleInfoWrapperPass(MMI));
   TPC->printAndVerify("MachineFunctionGenerator::assemble");
   // Add target-specific passes.
   ET.addTargetSpecificPasses(PM);
diff --git a/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp b/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp
index 742f7b94e116f3..63766f54900296 100644
--- a/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp
+++ b/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp
@@ -15,6 +15,7 @@
 #include "llvm/Bitcode/BitcodeReader.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
 #include "llvm/CodeGen/CommandFlags.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/FuzzMutate/FuzzerCLI.h"
 #include "llvm/FuzzMutate/IRMutator.h"
 #include "llvm/FuzzMutate/Operations.h"
@@ -96,10 +97,11 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
 
   // Build up a PM to do instruction selection.
   legacy::PassManager PM;
+  MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(TM.get()));
   TargetLibraryInfoImpl TLII(TM->getTargetTriple());
   PM.add(new TargetLibraryInfoWrapperPass(TLII));
   raw_null_ostream OS;
-  TM->addPassesToEmitFile(PM, OS, nullptr, CodeGenFileType::Null);
+  TM->addPassesToEmitFile(PM, MMI, OS, nullptr, CodeGenFileType::Null);
   PM.run(*M);
 
   return 0;
diff --git a/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp b/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp
index ceea57fa10cce4..c4a8d370a5d3ad 100644
--- a/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp
+++ b/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp
@@ -12,6 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/MC/TargetRegistry.h"
@@ -68,9 +69,10 @@ class AMDGPUSelectionDAGTest : public testing::Test {
     M->setDataLayout(TM->createDataLayout());
 
     legacy::PassManager PM;
+    MachineModuleInfo MMI(TM.get());
     PM.add(new AddMetadataPass(PalMDString));
     raw_svector_ostream OutStream(Elf);
-    if (TM->addPassesToEmitFile(PM, OutStream, nullptr,
+    if (TM->addPassesToEmitFile(PM, MMI, OutStream, nullptr,
                                 CodeGenFileType::ObjectFile))
       report_fatal_error("Target machine cannot emit a file of this type");
 
diff --git a/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp b/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp
index 1f3d7a55ee8542..7be667b5c76195 100644
--- a/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp
+++ b/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp
@@ -400,7 +400,8 @@ class AsmPrinterHandlerTest : public AsmPrinterFixtureBase {
     AP->addAsmPrinterHandler(std::make_unique<TestHandler>(*this));
     LLVMTargetMachine *LLVMTM = static_cast<LLVMTargetMachine *>(&AP->TM);
     legacy::PassManager PM;
-    PM.add(new MachineModuleInfoWrapperPass(LLVMTM));
+    MachineModuleInfo MMI(LLVMTM);
+    PM.add(new MachineModuleInfoWrapperPass(MMI));
     PM.add(TestPrinter->releaseAP()); // Takes ownership of destroying AP
     LLVMContext Context;
     std::unique_ptr<Module> M(new Module("TestModule", Context));
@@ -450,7 +451,8 @@ class AsmPrinterDebugHandlerTest : public AsmPrinterFixtureBase {
     AP->addDebugHandler(std::make_unique<TestDebugHandler>(*this, AP));
     LLVMTargetMachine *LLVMTM = static_cast<LLVMTargetMachine *>(&AP->TM);
     legacy::PassManager PM;
-    PM.add(new MachineModuleInfoWrapperPass(LLVMTM));
+    MachineModuleInfo MMI;
+    PM.add(new MachineModuleInfoWrapperPass(MMI));
     PM.add(TestPrinter->releaseAP()); // Takes ownership of destroying AP
     LLVMContext Context;
     std::unique_ptr<Module> M(new Module("TestModule", Context));
diff --git a/llvm/unittests/MI/LiveIntervalTest.cpp b/llvm/unittests/MI/LiveIntervalTest.cpp
index f910e8e1f2c8fb..5ebae2ced866bc 100644
--- a/llvm/unittests/MI/LiveIntervalTest.cpp
+++ b/llvm/unittests/MI/LiveIntervalTest.cpp
@@ -55,7 +55,7 @@ std::unique_ptr<LLVMTargetMachine> createTargetMachine() {
 }
 
 std::unique_ptr<Module> parseMIR(LLVMContext &Context,
-                                 legacy::PassManagerBase &PM,
+                                 MachineModuleInfo &MMI,
                                  std::unique_ptr<MIRParser> &MIR,
                                  const LLVMTargetMachine &TM,
                                  StringRef MIRCode) {
@@ -71,10 +71,8 @@ std::unique_ptr<Module> parseMIR(LLVMContext &Context,
 
   M->setDataLayout(TM.createDataLayout());
 
-  MachineModuleInfoWrapperPass *MMIWP = new MachineModuleInfoWrapperPass(&TM);
-  if (MIR->parseMachineFunctions(*M, MMIWP->getMMI()))
+  if (MIR->parseMachineFunctions(*M, MMI))
     return nullptr;
-  PM.add(MMIWP);
 
   return M;
 }
@@ -212,10 +210,13 @@ static void doTest(StringRef MIRFunc,
     return;
 
   legacy::PassManager PM;
+  MachineModuleInfo MMI(TM->get());
   std::unique_ptr<MIRParser> MIR;
-  std::unique_ptr<Module> M = parseMIR(Context, PM, MIR, *TM, MIRFunc);
+  std::unique_ptr<Module> M = parseMIR(Context, MMI, MIR, *TM, MIRFunc);
   ASSERT_TRUE(M);
 
+  PM.add(new MachineModuleInfoWrapperPass(MMI));
+
   PM.add(new TestPassT<AnalysisType>(T, ShouldPass));
 
   PM.run(*M);

>From 0a6575c62f364be4e46c9fe8bff5c494ab21e60d Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 19:54:20 -0400
Subject: [PATCH 15/21] clang tidy.

---
 llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp         | 2 +-
 llvm/lib/LTO/LTOBackend.cpp                      | 2 +-
 llvm/lib/LTO/ThinLTOCodeGenerator.cpp            | 2 +-
 llvm/lib/Target/TargetMachineC.cpp               | 2 +-
 llvm/tools/llc/llc.cpp                           | 9 ++++-----
 llvm/tools/llvm-exegesis/lib/Assembler.cpp       | 8 ++++----
 llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp | 2 +-
 llvm/unittests/MI/LiveIntervalTest.cpp           | 3 +--
 8 files changed, 14 insertions(+), 16 deletions(-)

diff --git a/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp b/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp
index 78b7fcedcda618..399920f9d347c3 100644
--- a/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp
+++ b/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp
@@ -158,7 +158,7 @@ std::unique_ptr<MemoryBuffer> MCJIT::emitObject(Module *M) {
   // generateCodeForModule.
 
   legacy::PassManager PM;
-  auto * LLVMTM = static_cast<LLVMTargetMachine*>(TM.get());
+  auto *LLVMTM = static_cast<LLVMTargetMachine *>(TM.get());
   MachineModuleInfo MMI(LLVMTM);
   Ctx = &MMI.getContext();
 
diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
index 15b5daea7f11a6..85bba5178850e0 100644
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -418,7 +418,7 @@ static void codegen(const Config &Conf, TargetMachine *TM,
   TM->Options.ObjectFilenameForDebug = Stream->ObjectPathName;
 
   legacy::PassManager CodeGenPasses;
-  MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(TM));
+  MachineModuleInfo MMI(static_cast<LLVMTargetMachine *>(TM));
   TargetLibraryInfoImpl TLII(Triple(Mod.getTargetTriple()));
   CodeGenPasses.add(new TargetLibraryInfoWrapperPass(TLII));
   CodeGenPasses.add(
diff --git a/llvm/lib/LTO/ThinLTOCodeGenerator.cpp b/llvm/lib/LTO/ThinLTOCodeGenerator.cpp
index 4b522a4f3cbf4a..fdc97940649531 100644
--- a/llvm/lib/LTO/ThinLTOCodeGenerator.cpp
+++ b/llvm/lib/LTO/ThinLTOCodeGenerator.cpp
@@ -334,7 +334,7 @@ std::unique_ptr<MemoryBuffer> codegenModule(Module &TheModule,
   {
     raw_svector_ostream OS(OutputBuffer);
     legacy::PassManager PM;
-    MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(&TM));
+    MachineModuleInfo MMI(static_cast<LLVMTargetMachine *>(&TM));
 
     // Setup the codegen now.
     if (TM.addPassesToEmitFile(PM, MMI, OS, nullptr,
diff --git a/llvm/lib/Target/TargetMachineC.cpp b/llvm/lib/Target/TargetMachineC.cpp
index 5a2918827a6255..bae4f3e1da5aba 100644
--- a/llvm/lib/Target/TargetMachineC.cpp
+++ b/llvm/lib/Target/TargetMachineC.cpp
@@ -296,7 +296,7 @@ static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
   Module* Mod = unwrap(M);
 
   legacy::PassManager pass;
-  MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(TM));
+  MachineModuleInfo MMI(static_cast<LLVMTargetMachine *>(TM));
 
   std::string error;
 
diff --git a/llvm/tools/llc/llc.cpp b/llvm/tools/llc/llc.cpp
index 21c492c87e2e87..758a6dad0faac2 100644
--- a/llvm/tools/llc/llc.cpp
+++ b/llvm/tools/llc/llc.cpp
@@ -692,8 +692,7 @@ static int compileModule(char **argv, LLVMContext &Context) {
     // Construct a custom pass pipeline that starts after instruction
     // selection.
     if (!getRunPassNames().empty()) {
-      auto *MMIWP =
-          new MachineModuleInfoWrapperPass(MMI);
+      auto *MMIWP = new MachineModuleInfoWrapperPass(MMI);
       if (!MIR) {
         WithColor::warning(errs(), argv[0])
             << "run-pass is for .mir file only.\n";
@@ -722,9 +721,9 @@ static int compileModule(char **argv, LLVMContext &Context) {
       TPC.setInitialized();
       PM.add(createPrintMIRPass(*OS));
       PM.add(createFreeMachineFunctionPass());
-    } else if (Target->addPassesToEmitFile(
-                   PM, MMI, *OS, DwoOut ? &DwoOut->os() : nullptr,
-                   codegen::getFileType(), NoVerify)) {
+    } else if (Target->addPassesToEmitFile(PM, MMI, *OS,
+                                           DwoOut ? &DwoOut->os() : nullptr,
+                                           codegen::getFileType(), NoVerify)) {
       reportError("target does not support generation of this file type");
     }
 
diff --git a/llvm/tools/llvm-exegesis/lib/Assembler.cpp b/llvm/tools/llvm-exegesis/lib/Assembler.cpp
index 4472186d6a55b9..97307b70078ad8 100644
--- a/llvm/tools/llvm-exegesis/lib/Assembler.cpp
+++ b/llvm/tools/llvm-exegesis/lib/Assembler.cpp
@@ -235,8 +235,8 @@ BitVector getFunctionReservedRegs(const TargetMachine &TM) {
   // TODO: This only works for targets implementing LLVMTargetMachine.
   const LLVMTargetMachine &LLVMTM = static_cast<const LLVMTargetMachine &>(TM);
   MachineModuleInfo MMI(&LLVMTM);
-  MachineFunction &MF = createVoidVoidPtrMachineFunction(
-      FunctionID, Module.get(), &MMI);
+  MachineFunction &MF =
+      createVoidVoidPtrMachineFunction(FunctionID, Module.get(), &MMI);
   // Saving reserved registers for client.
   return MF.getSubtarget().getRegisterInfo()->getReservedRegs(MF);
 }
@@ -250,8 +250,8 @@ Error assembleToStream(const ExegesisTarget &ET,
   std::unique_ptr<Module> Module =
       createModule(Context, TM->createDataLayout());
   MachineModuleInfo MMI(TM.get());
-  MachineFunction &MF = createVoidVoidPtrMachineFunction(
-      FunctionID, Module.get(), &MMI);
+  MachineFunction &MF =
+      createVoidVoidPtrMachineFunction(FunctionID, Module.get(), &MMI);
   MF.ensureAlignment(kFunctionAlignment);
 
   // We need to instruct the passes that we're done with SSA and virtual
diff --git a/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp b/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp
index 63766f54900296..a5e86a1b2fd693 100644
--- a/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp
+++ b/llvm/tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp
@@ -97,7 +97,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
 
   // Build up a PM to do instruction selection.
   legacy::PassManager PM;
-  MachineModuleInfo MMI(static_cast<LLVMTargetMachine*>(TM.get()));
+  MachineModuleInfo MMI(static_cast<LLVMTargetMachine *>(TM.get()));
   TargetLibraryInfoImpl TLII(TM->getTargetTriple());
   PM.add(new TargetLibraryInfoWrapperPass(TLII));
   raw_null_ostream OS;
diff --git a/llvm/unittests/MI/LiveIntervalTest.cpp b/llvm/unittests/MI/LiveIntervalTest.cpp
index 5ebae2ced866bc..c1b3ce1c560ae6 100644
--- a/llvm/unittests/MI/LiveIntervalTest.cpp
+++ b/llvm/unittests/MI/LiveIntervalTest.cpp
@@ -54,8 +54,7 @@ std::unique_ptr<LLVMTargetMachine> createTargetMachine() {
                              std::nullopt, CodeGenOptLevel::Aggressive)));
 }
 
-std::unique_ptr<Module> parseMIR(LLVMContext &Context,
-                                 MachineModuleInfo &MMI,
+std::unique_ptr<Module> parseMIR(LLVMContext &Context, MachineModuleInfo &MMI,
                                  std::unique_ptr<MIRParser> &MIR,
                                  const LLVMTargetMachine &TM,
                                  StringRef MIRCode) {

>From 753d99a1b9d9df2d9a74384b14834403230a6a4a Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 20:54:07 -0400
Subject: [PATCH 16/21] Fixed compilation issue.

---
 llvm/examples/Kaleidoscope/Chapter8/toy.cpp | 6 +++++-
 llvm/include/llvm/Target/TargetMachine.h    | 2 +-
 llvm/unittests/MI/LiveIntervalTest.cpp      | 2 +-
 mlir/lib/Target/LLVM/ModuleToObject.cpp     | 6 +++++-
 4 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/llvm/examples/Kaleidoscope/Chapter8/toy.cpp b/llvm/examples/Kaleidoscope/Chapter8/toy.cpp
index ae2f9c7059e5fb..45e7b27ef241b5 100644
--- a/llvm/examples/Kaleidoscope/Chapter8/toy.cpp
+++ b/llvm/examples/Kaleidoscope/Chapter8/toy.cpp
@@ -1,5 +1,6 @@
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
@@ -1257,9 +1258,12 @@ int main() {
   }
 
   legacy::PassManager pass;
+  llvm::MachineModuleInfo MMI(
+      static_cast<LLVMTargetMachine *>(TheTargetMachine));
   auto FileType = CodeGenFileType::ObjectFile;
 
-  if (TheTargetMachine->addPassesToEmitFile(pass, dest, nullptr, FileType)) {
+  if (TheTargetMachine->addPassesToEmitFile(pass, MMI, dest, nullptr,
+                                            FileType)) {
     errs() << "TheTargetMachine can't emit a file of this type";
     return 1;
   }
diff --git a/llvm/include/llvm/Target/TargetMachine.h b/llvm/include/llvm/Target/TargetMachine.h
index 267971cd89a5d5..69aff06032502e 100644
--- a/llvm/include/llvm/Target/TargetMachine.h
+++ b/llvm/include/llvm/Target/TargetMachine.h
@@ -34,7 +34,7 @@ using ModulePassManager = PassManager<Module>;
 
 class Function;
 class GlobalValue;
-class MachineModuleInfoWrapperPass;
+class MachineModuleInfo;
 class Mangler;
 class MCAsmInfo;
 class MCContext;
diff --git a/llvm/unittests/MI/LiveIntervalTest.cpp b/llvm/unittests/MI/LiveIntervalTest.cpp
index c1b3ce1c560ae6..de4a2b4ba1b068 100644
--- a/llvm/unittests/MI/LiveIntervalTest.cpp
+++ b/llvm/unittests/MI/LiveIntervalTest.cpp
@@ -209,7 +209,7 @@ static void doTest(StringRef MIRFunc,
     return;
 
   legacy::PassManager PM;
-  MachineModuleInfo MMI(TM->get());
+  MachineModuleInfo MMI(TM.get());
   std::unique_ptr<MIRParser> MIR;
   std::unique_ptr<Module> M = parseMIR(Context, MMI, MIR, *TM, MIRFunc);
   ASSERT_TRUE(M);
diff --git a/mlir/lib/Target/LLVM/ModuleToObject.cpp b/mlir/lib/Target/LLVM/ModuleToObject.cpp
index 77391341adaad2..327268934b6573 100644
--- a/mlir/lib/Target/LLVM/ModuleToObject.cpp
+++ b/mlir/lib/Target/LLVM/ModuleToObject.cpp
@@ -20,6 +20,7 @@
 #include "mlir/Target/LLVMIR/ModuleTranslation.h"
 
 #include "llvm/Bitcode/BitcodeWriter.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IRReader/IRReader.h"
 #include "llvm/Linker/Linker.h"
@@ -175,8 +176,11 @@ ModuleToObject::translateToISA(llvm::Module &llvmModule,
   { // Drop pstream after this to prevent the ISA from being stuck buffering
     llvm::buffer_ostream pstream(stream);
     llvm::legacy::PassManager codegenPasses;
+    llvm::MachineModuleInfo machineModuleInfo(
+        static_cast<llvm::LLVMTargetMachine *>(&targetMachine));
 
-    if (targetMachine.addPassesToEmitFile(codegenPasses, pstream, nullptr,
+    if (targetMachine.addPassesToEmitFile(codegenPasses, machineModuleInfo,
+                                          pstream, nullptr,
                                           llvm::CodeGenFileType::AssemblyFile))
       return std::nullopt;
 

>From 9ba79131028d737be5aadfa17dca3f0795d7ee5c Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Sun, 29 Sep 2024 22:45:57 -0400
Subject: [PATCH 17/21] Fixed default construction of MMI in the
 AsmPrinterDwarfTest.

---
 llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp b/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp
index 7be667b5c76195..0a021ee215e0e7 100644
--- a/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp
+++ b/llvm/unittests/CodeGen/AsmPrinterDwarfTest.cpp
@@ -451,7 +451,7 @@ class AsmPrinterDebugHandlerTest : public AsmPrinterFixtureBase {
     AP->addDebugHandler(std::make_unique<TestDebugHandler>(*this, AP));
     LLVMTargetMachine *LLVMTM = static_cast<LLVMTargetMachine *>(&AP->TM);
     legacy::PassManager PM;
-    MachineModuleInfo MMI;
+    MachineModuleInfo MMI(LLVMTM);
     PM.add(new MachineModuleInfoWrapperPass(MMI));
     PM.add(TestPrinter->releaseAP()); // Takes ownership of destroying AP
     LLVMContext Context;

>From ead138ad0e17cf51334763afb94bc52215d7f70f Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Tue, 1 Oct 2024 15:39:47 -0400
Subject: [PATCH 18/21] Create LLVMTargetMachineC.cpp to implement the
 MC-emission related things in the C-API + linked any libraries that depends
 on MC file emission to CodeGen.

---
 llvm/lib/CodeGen/CMakeLists.txt               |   1 +
 llvm/lib/CodeGen/LLVMTargetMachineC.cpp       | 102 ++++++++++++++++++
 llvm/lib/ExecutionEngine/MCJIT/CMakeLists.txt |   1 +
 llvm/lib/ExecutionEngine/Orc/CMakeLists.txt   |   1 +
 llvm/lib/Target/TargetMachineC.cpp            |  65 -----------
 5 files changed, 105 insertions(+), 65 deletions(-)
 create mode 100644 llvm/lib/CodeGen/LLVMTargetMachineC.cpp

diff --git a/llvm/lib/CodeGen/CMakeLists.txt b/llvm/lib/CodeGen/CMakeLists.txt
index 5a17944db0ae03..1ef4857af462c9 100644
--- a/llvm/lib/CodeGen/CMakeLists.txt
+++ b/llvm/lib/CodeGen/CMakeLists.txt
@@ -100,6 +100,7 @@ add_llvm_component_library(LLVMCodeGen
   LiveStacks.cpp
   LiveVariables.cpp
   LLVMTargetMachine.cpp
+  LLVMTargetMachineC.cpp
   LocalStackSlotAllocation.cpp
   LoopTraversal.cpp
   LowLevelTypeUtils.cpp
diff --git a/llvm/lib/CodeGen/LLVMTargetMachineC.cpp b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
new file mode 100644
index 00000000000000..d4d8bdd4bdc20d
--- /dev/null
+++ b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
@@ -0,0 +1,102 @@
+//===-- LLVMTargetMachineC.cpp --------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the LLVM-C part of TargetMachine.h that directly
+// depends on the CodeGen library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-c/Core.h"
+#include "llvm-c/TargetMachine.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
+
+using namespace llvm;
+
+static TargetMachine *unwrap(LLVMTargetMachineRef P) {
+  return reinterpret_cast<TargetMachine *>(P);
+}
+
+static Target *unwrap(LLVMTargetRef P) { return reinterpret_cast<Target *>(P); }
+
+static LLVMTargetMachineRef wrap(const TargetMachine *P) {
+  return reinterpret_cast<LLVMTargetMachineRef>(const_cast<TargetMachine *>(P));
+}
+
+static LLVMTargetRef wrap(const Target *P) {
+  return reinterpret_cast<LLVMTargetRef>(const_cast<Target *>(P));
+}
+
+static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
+                                      raw_pwrite_stream &OS,
+                                      LLVMCodeGenFileType codegen,
+                                      char **ErrorMessage) {
+  TargetMachine *TM = unwrap(T);
+  Module *Mod = unwrap(M);
+
+  legacy::PassManager pass;
+  MachineModuleInfo MMI(static_cast<LLVMTargetMachine *>(TM));
+
+  std::string error;
+
+  Mod->setDataLayout(TM->createDataLayout());
+
+  CodeGenFileType ft;
+  switch (codegen) {
+  case LLVMAssemblyFile:
+    ft = CodeGenFileType::AssemblyFile;
+    break;
+  default:
+    ft = CodeGenFileType::ObjectFile;
+    break;
+  }
+  if (TM->addPassesToEmitFile(pass, MMI, OS, nullptr, ft)) {
+    error = "TargetMachine can't emit a file of this type";
+    *ErrorMessage = strdup(error.c_str());
+    return true;
+  }
+
+  pass.run(*Mod);
+
+  OS.flush();
+  return false;
+}
+
+LLVMBool LLVMTargetMachineEmitToFile(LLVMTargetMachineRef T, LLVMModuleRef M,
+                                     const char *Filename,
+                                     LLVMCodeGenFileType codegen,
+                                     char **ErrorMessage) {
+  std::error_code EC;
+  raw_fd_ostream dest(Filename, EC, sys::fs::OF_None);
+  if (EC) {
+    *ErrorMessage = strdup(EC.message().c_str());
+    return true;
+  }
+  bool Result = LLVMTargetMachineEmit(T, M, dest, codegen, ErrorMessage);
+  dest.flush();
+  return Result;
+}
+
+LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
+                                             LLVMModuleRef M,
+                                             LLVMCodeGenFileType codegen,
+                                             char **ErrorMessage,
+                                             LLVMMemoryBufferRef *OutMemBuf) {
+  SmallString<0> CodeString;
+  raw_svector_ostream OStream(CodeString);
+  bool Result = LLVMTargetMachineEmit(T, M, OStream, codegen, ErrorMessage);
+
+  StringRef Data = OStream.str();
+  *OutMemBuf =
+      LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.data(), Data.size(), "");
+  return Result;
+}
\ No newline at end of file
diff --git a/llvm/lib/ExecutionEngine/MCJIT/CMakeLists.txt b/llvm/lib/ExecutionEngine/MCJIT/CMakeLists.txt
index f7a4610e0500f3..958cf3138f24fa 100644
--- a/llvm/lib/ExecutionEngine/MCJIT/CMakeLists.txt
+++ b/llvm/lib/ExecutionEngine/MCJIT/CMakeLists.txt
@@ -5,6 +5,7 @@ add_llvm_component_library(LLVMMCJIT
   intrinsics_gen
 
   LINK_COMPONENTS
+  CodeGen
   Core
   ExecutionEngine
   Object
diff --git a/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt b/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
index 5dfd621781e446..32f7cac0b3d1ec 100644
--- a/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
+++ b/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
@@ -63,6 +63,7 @@ add_llvm_component_library(LLVMOrcJIT
 
   LINK_COMPONENTS
   BinaryFormat
+  CodeGen
   Core
   ExecutionEngine
   JITLink
diff --git a/llvm/lib/Target/TargetMachineC.cpp b/llvm/lib/Target/TargetMachineC.cpp
index bae4f3e1da5aba..08fad95d18752e 100644
--- a/llvm/lib/Target/TargetMachineC.cpp
+++ b/llvm/lib/Target/TargetMachineC.cpp
@@ -13,13 +13,11 @@
 #include "llvm-c/Core.h"
 #include "llvm-c/TargetMachine.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/MC/TargetRegistry.h"
 #include "llvm/Support/CBindingWrapping.h"
-#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/CodeGenCWrappers.h"
 #include "llvm/Target/TargetMachine.h"
@@ -288,69 +286,6 @@ LLVMTargetDataRef LLVMCreateTargetDataLayout(LLVMTargetMachineRef T) {
   return wrap(new DataLayout(unwrap(T)->createDataLayout()));
 }
 
-static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
-                                      raw_pwrite_stream &OS,
-                                      LLVMCodeGenFileType codegen,
-                                      char **ErrorMessage) {
-  TargetMachine* TM = unwrap(T);
-  Module* Mod = unwrap(M);
-
-  legacy::PassManager pass;
-  MachineModuleInfo MMI(static_cast<LLVMTargetMachine *>(TM));
-
-  std::string error;
-
-  Mod->setDataLayout(TM->createDataLayout());
-
-  CodeGenFileType ft;
-  switch (codegen) {
-    case LLVMAssemblyFile:
-      ft = CodeGenFileType::AssemblyFile;
-      break;
-    default:
-      ft = CodeGenFileType::ObjectFile;
-      break;
-  }
-  if (TM->addPassesToEmitFile(pass, MMI, OS, nullptr, ft)) {
-    error = "TargetMachine can't emit a file of this type";
-    *ErrorMessage = strdup(error.c_str());
-    return true;
-  }
-
-  pass.run(*Mod);
-
-  OS.flush();
-  return false;
-}
-
-LLVMBool LLVMTargetMachineEmitToFile(LLVMTargetMachineRef T, LLVMModuleRef M,
-                                     const char *Filename,
-                                     LLVMCodeGenFileType codegen,
-                                     char **ErrorMessage) {
-  std::error_code EC;
-  raw_fd_ostream dest(Filename, EC, sys::fs::OF_None);
-  if (EC) {
-    *ErrorMessage = strdup(EC.message().c_str());
-    return true;
-  }
-  bool Result = LLVMTargetMachineEmit(T, M, dest, codegen, ErrorMessage);
-  dest.flush();
-  return Result;
-}
-
-LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
-  LLVMModuleRef M, LLVMCodeGenFileType codegen, char** ErrorMessage,
-  LLVMMemoryBufferRef *OutMemBuf) {
-  SmallString<0> CodeString;
-  raw_svector_ostream OStream(CodeString);
-  bool Result = LLVMTargetMachineEmit(T, M, OStream, codegen, ErrorMessage);
-
-  StringRef Data = OStream.str();
-  *OutMemBuf =
-      LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.data(), Data.size(), "");
-  return Result;
-}
-
 char *LLVMGetDefaultTargetTriple(void) {
   return strdup(sys::getDefaultTargetTriple().c_str());
 }

>From 928014de36157905e49380fde7667fc1a61404c3 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Wed, 2 Oct 2024 11:59:04 -0400
Subject: [PATCH 19/21] Added missing line at the end of
 LLVMTargetMachineC.cpp.

---
 llvm/lib/CodeGen/LLVMTargetMachineC.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/CodeGen/LLVMTargetMachineC.cpp b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
index d4d8bdd4bdc20d..b6b7b74de93bc7 100644
--- a/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
+++ b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
@@ -99,4 +99,4 @@ LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
   *OutMemBuf =
       LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.data(), Data.size(), "");
   return Result;
-}
\ No newline at end of file
+}

>From 1beda2af73e73a0b99280d79521d556eaa9e0900 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Wed, 2 Oct 2024 12:05:57 -0400
Subject: [PATCH 20/21] Added missing line at the end of
 LLVMTargetMachineC.cpp.

---
 llvm/lib/CodeGen/LLVMTargetMachineC.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/lib/CodeGen/LLVMTargetMachineC.cpp b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
index b6b7b74de93bc7..4d8a07eb7969b5 100644
--- a/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
+++ b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
@@ -100,3 +100,4 @@ LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
       LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.data(), Data.size(), "");
   return Result;
 }
+

>From d4a56209211674721516206be12ae738aed6e725 Mon Sep 17 00:00:00 2001
From: matinraayai <30674652+matinraayai at users.noreply.github.com>
Date: Wed, 2 Oct 2024 12:12:15 -0400
Subject: [PATCH 21/21] Next line issue in LLVMTargetMachineC.cpp.

---
 llvm/lib/CodeGen/LLVMTargetMachineC.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/llvm/lib/CodeGen/LLVMTargetMachineC.cpp b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
index 4d8a07eb7969b5..b6b7b74de93bc7 100644
--- a/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
+++ b/llvm/lib/CodeGen/LLVMTargetMachineC.cpp
@@ -100,4 +100,3 @@ LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
       LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.data(), Data.size(), "");
   return Result;
 }
-



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