Index: llvm/lib/TableGen/TableGenBackendSkeleton.cpp
===================================================================
--- llvm/lib/TableGen/TableGenBackendSkeleton.cpp
+++ llvm/lib/TableGen/TableGenBackendSkeleton.cpp
@@ -10,8 +10,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/ADT/DenseMapInfo.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/Support/ErrorHandling.h"
 #include "llvm/TableGen/TableGenBackend.h"
 
 #define DEBUG_TYPE "skeleton-emitter"
Index: llvm/utils/TableGen/GICombinerEmitter.cpp
===================================================================
--- llvm/utils/TableGen/GICombinerEmitter.cpp
+++ llvm/utils/TableGen/GICombinerEmitter.cpp
@@ -11,6 +11,12 @@
 ///
 //===----------------------------------------------------------------------===//
 
+#include "CodeGenTarget.h"
+#include "GlobalISel/CodeExpander.h"
+#include "GlobalISel/CodeExpansions.h"
+#include "GlobalISel/GIMatchDag.h"
+#include "GlobalISel/GIMatchDagPredicate.h"
+#include "GlobalISel/GIMatchTree.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/StringSet.h"
@@ -21,11 +27,6 @@
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/StringMatcher.h"
 #include "llvm/TableGen/TableGenBackend.h"
-#include "CodeGenTarget.h"
-#include "GlobalISel/CodeExpander.h"
-#include "GlobalISel/CodeExpansions.h"
-#include "GlobalISel/GIMatchDag.h"
-#include "GlobalISel/GIMatchTree.h"
 #include <cstdint>
 
 using namespace llvm;
Index: llvm/utils/TableGen/GlobalISel/CodeExpander.h
===================================================================
--- llvm/utils/TableGen/GlobalISel/CodeExpander.h
+++ llvm/utils/TableGen/GlobalISel/CodeExpander.h
@@ -15,10 +15,10 @@
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/Support/SMLoc.h"
 
 namespace llvm {
 class CodeExpansions;
+class SMLoc;
 class raw_ostream;
 
 /// Emit the given code with all '${foo}' placeholders expanded to their
Index: llvm/utils/TableGen/GlobalISel/CodeExpander.cpp
===================================================================
--- llvm/utils/TableGen/GlobalISel/CodeExpander.cpp
+++ llvm/utils/TableGen/GlobalISel/CodeExpander.cpp
@@ -12,7 +12,6 @@
 
 #include "CodeExpander.h"
 #include "CodeExpansions.h"
-#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/TableGen/Error.h"
 
Index: llvm/utils/TableGen/GlobalISel/GIMatchDag.h
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchDag.h
+++ llvm/utils/TableGen/GlobalISel/GIMatchDag.h
@@ -16,7 +16,6 @@
 #include "GIMatchDagPredicateDependencyEdge.h"
 
 namespace llvm {
-class GIMatchDag;
 
 /// This class manages lifetimes for data associated with the GIMatchDag object.
 class GIMatchDagContext {
Index: llvm/utils/TableGen/GlobalISel/GIMatchDagEdge.cpp
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchDagEdge.cpp
+++ llvm/utils/TableGen/GlobalISel/GIMatchDagEdge.cpp
@@ -8,6 +8,7 @@
 
 #include "GIMatchDagEdge.h"
 #include "GIMatchDagInstr.h"
+#include "GIMatchDagOperands.h"
 #include "llvm/Support/raw_ostream.h"
 
 using namespace llvm;
Index: llvm/utils/TableGen/GlobalISel/GIMatchDagInstr.h
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchDagInstr.h
+++ llvm/utils/TableGen/GlobalISel/GIMatchDagInstr.h
@@ -9,11 +9,14 @@
 #ifndef LLVM_UTILS_TABLEGEN_GIMATCHDAGINSTR_H
 #define LLVM_UTILS_TABLEGEN_GIMATCHDAGINSTR_H
 
-#include "GIMatchDagOperands.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/raw_ostream.h"
 
 namespace llvm {
+class CodeGenInstruction;
 class GIMatchDag;
+class GIMatchDagOperandList;
 
 /// Represents an instruction in the match DAG. This object knows very little
 /// about the actual instruction to be matched as the bulk of that is in
Index: llvm/utils/TableGen/GlobalISel/GIMatchDagPredicate.h
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchDagPredicate.h
+++ llvm/utils/TableGen/GlobalISel/GIMatchDagPredicate.h
@@ -9,8 +9,12 @@
 #ifndef LLVM_UTILS_TABLEGEN_GIMATCHDAGPREDICATE_H
 #define LLVM_UTILS_TABLEGEN_GIMATCHDAGPREDICATE_H
 
+#include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
-#include "GIMatchDag.h"
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+#include "llvm/Support/raw_ostream.h"
+#endif
 
 namespace llvm {
 class CodeExpansions;
Index: llvm/utils/TableGen/GlobalISel/GIMatchDagPredicate.cpp
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchDagPredicate.cpp
+++ llvm/utils/TableGen/GlobalISel/GIMatchDagPredicate.cpp
@@ -10,8 +10,8 @@
 
 #include "llvm/TableGen/Record.h"
 
-#include "GIMatchDagOperands.h"
 #include "../CodeGenInstruction.h"
+#include "GIMatchDag.h"
 
 using namespace llvm;
 
Index: llvm/utils/TableGen/GlobalISel/GIMatchDagPredicateDependencyEdge.h
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchDagPredicateDependencyEdge.h
+++ llvm/utils/TableGen/GlobalISel/GIMatchDagPredicateDependencyEdge.h
@@ -9,12 +9,14 @@
 #ifndef LLVM_UTILS_TABLEGEN_GIMATCHDAGPREDICATEEDGE_H
 #define LLVM_UTILS_TABLEGEN_GIMATCHDAGPREDICATEEDGE_H
 
-#include "GIMatchDagOperands.h"
+#include "llvm/Support/Compiler.h"
 
 namespace llvm {
-class GIMatchDag;
 class GIMatchDagInstr;
 class GIMatchDagPredicate;
+class GIMatchDagOperand;
+
+class raw_ostream;
 
 /// Represents a dependency that must be met to evaluate a predicate.
 ///
Index: llvm/utils/TableGen/GlobalISel/GIMatchDagPredicateDependencyEdge.cpp
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchDagPredicateDependencyEdge.cpp
+++ llvm/utils/TableGen/GlobalISel/GIMatchDagPredicateDependencyEdge.cpp
@@ -9,6 +9,7 @@
 #include "GIMatchDagPredicateDependencyEdge.h"
 
 #include "GIMatchDagInstr.h"
+#include "GIMatchDagOperands.h"
 #include "GIMatchDagPredicate.h"
 
 #include "llvm/Support/raw_ostream.h"
Index: llvm/utils/TableGen/GlobalISel/GIMatchTree.cpp
===================================================================
--- llvm/utils/TableGen/GlobalISel/GIMatchTree.cpp
+++ llvm/utils/TableGen/GlobalISel/GIMatchTree.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "GIMatchTree.h"
+#include "GIMatchDagPredicate.h"
 
 #include "../CodeGenInstruction.h"