From 60f815d2411354803ef8cffe8825d95f80dcbb98 Mon Sep 17 00:00:00 2001
From: Sergei Barannikov <barannikov88@gmail.com>
Date: Sun, 30 Apr 2023 07:00:20 +0300
Subject: [PATCH] [TableGen] Forward declare CodeGenRegister et al. (NFC)

---
 llvm/utils/TableGen/CallingConvEmitter.cpp   | 2 ++
 llvm/utils/TableGen/CodeGenDAGPatterns.h     | 3 ++-
 llvm/utils/TableGen/CodeGenRegisters.h       | 3 ++-
 llvm/utils/TableGen/CodeGenTarget.cpp        | 5 +++++
 llvm/utils/TableGen/CodeGenTarget.h          | 9 +++++----
 llvm/utils/TableGen/DAGISelMatcher.h         | 2 +-
 llvm/utils/TableGen/DFAPacketizerEmitter.cpp | 1 +
 7 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/llvm/utils/TableGen/CallingConvEmitter.cpp b/llvm/utils/TableGen/CallingConvEmitter.cpp
index 2fd877f..8e6b40e 100644
--- a/llvm/utils/TableGen/CallingConvEmitter.cpp
+++ b/llvm/utils/TableGen/CallingConvEmitter.cpp
@@ -15,6 +15,8 @@
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
 #include "llvm/TableGen/TableGenBackend.h"
+#include <deque>
+
 using namespace llvm;
 
 namespace {
diff --git a/llvm/utils/TableGen/CodeGenDAGPatterns.h b/llvm/utils/TableGen/CodeGenDAGPatterns.h
index 8a02e41..c7a5f5c 100644
--- a/llvm/utils/TableGen/CodeGenDAGPatterns.h
+++ b/llvm/utils/TableGen/CodeGenDAGPatterns.h
@@ -23,8 +23,10 @@
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringSet.h"
+#include "llvm/ADT/Twine.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
+#include "llvm/TableGen/Record.h"
 #include <algorithm>
 #include <array>
 #include <functional>
@@ -34,7 +36,6 @@
 
 namespace llvm {
 
-class Record;
 class Init;
 class ListInit;
 class DagInit;
diff --git a/llvm/utils/TableGen/CodeGenRegisters.h b/llvm/utils/TableGen/CodeGenRegisters.h
index e0d401e..15f08d1 100644
--- a/llvm/utils/TableGen/CodeGenRegisters.h
+++ b/llvm/utils/TableGen/CodeGenRegisters.h
@@ -150,7 +150,8 @@ namespace llvm {
   };
 
   /// CodeGenRegister - Represents a register definition.
-  struct CodeGenRegister {
+  class CodeGenRegister {
+  public:
     Record *TheDef;
     unsigned EnumValue;
     std::vector<int64_t> CostPerUse;
diff --git a/llvm/utils/TableGen/CodeGenTarget.cpp b/llvm/utils/TableGen/CodeGenTarget.cpp
index ca8ce48..fbdc049 100644
--- a/llvm/utils/TableGen/CodeGenTarget.cpp
+++ b/llvm/utils/TableGen/CodeGenTarget.cpp
@@ -15,6 +15,7 @@
 
 #include "CodeGenTarget.h"
 #include "CodeGenInstruction.h"
+#include "CodeGenRegisters.h"
 #include "CodeGenSchedule.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/Twine.h"
@@ -431,6 +432,10 @@ const CodeGenRegister *CodeGenTarget::getRegisterByName(StringRef Name) const {
   return getRegBank().getRegistersByName().lookup(Name);
 }
 
+const CodeGenRegisterClass &CodeGenTarget::getRegisterClass(Record *R) const {
+  return *getRegBank().getRegClass(R);
+}
+
 std::vector<ValueTypeByHwMode> CodeGenTarget::getRegisterVTs(Record *R)
       const {
   const CodeGenRegister *Reg = getRegBank().getReg(R);
diff --git a/llvm/utils/TableGen/CodeGenTarget.h b/llvm/utils/TableGen/CodeGenTarget.h
index fa1b7e1..c14827c 100644
--- a/llvm/utils/TableGen/CodeGenTarget.h
+++ b/llvm/utils/TableGen/CodeGenTarget.h
@@ -17,7 +17,6 @@
 #define LLVM_UTILS_TABLEGEN_CODEGENTARGET_H
 
 #include "CodeGenHwModes.h"
-#include "CodeGenRegisters.h"
 #include "InfoByHwMode.h"
 #include "SDNodeProperties.h"
 #include "llvm/ADT/ArrayRef.h"
@@ -36,7 +35,11 @@ namespace llvm {
 class RecordKeeper;
 class Record;
 class CodeGenInstruction;
+class CodeGenRegBank;
+class CodeGenRegister;
+class CodeGenRegisterClass;
 class CodeGenSchedModels;
+class CodeGenSubRegIndex;
 
 /// getValueType - Return the MVT::SimpleValueType that the specified TableGen
 /// record corresponds to.
@@ -130,9 +133,7 @@ public:
     return RegAltNameIndices;
   }
 
-  const CodeGenRegisterClass &getRegisterClass(Record *R) const {
-    return *getRegBank().getRegClass(R);
-  }
+  const CodeGenRegisterClass &getRegisterClass(Record *R) const;
 
   /// getRegisterVTs - Find the union of all possible SimpleValueTypes for the
   /// specified physical register.
diff --git a/llvm/utils/TableGen/DAGISelMatcher.h b/llvm/utils/TableGen/DAGISelMatcher.h
index 826080f..a6a2fbe 100644
--- a/llvm/utils/TableGen/DAGISelMatcher.h
+++ b/llvm/utils/TableGen/DAGISelMatcher.h
@@ -21,7 +21,7 @@
 #include <utility>
 
 namespace llvm {
-  struct CodeGenRegister;
+  class CodeGenRegister;
   class CodeGenDAGPatterns;
   class CodeGenInstruction;
   class Matcher;
diff --git a/llvm/utils/TableGen/DFAPacketizerEmitter.cpp b/llvm/utils/TableGen/DFAPacketizerEmitter.cpp
index da8538f..64c7884 100644
--- a/llvm/utils/TableGen/DFAPacketizerEmitter.cpp
+++ b/llvm/utils/TableGen/DFAPacketizerEmitter.cpp
@@ -24,6 +24,7 @@
 #include "llvm/TableGen/TableGenBackend.h"
 #include <cassert>
 #include <cstdint>
+#include <deque>
 #include <map>
 #include <set>
 #include <string>
-- 
2.7.4