[NFC] Header cleanup

Removed some unused headers, replaced some headers with forward class declarations.

Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'

Patch by Eugene Kosov <claprix@yandex.ru>

Differential Revision: http://reviews.llvm.org/D19219

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266595

5 files changed, 0 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
index 5751fbfd5fd..e7c63a8d945 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -17,7 +17,6 @@
 #define LLVM_LIB_CODEGEN_SELECTIONDAG_LEGALIZETYPES_H
 
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/DenseSet.h"
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
diff --git a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
index c27f8de601f..d4756f7f416 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
@@ -14,7 +14,6 @@
 #ifndef LLVM_LIB_CODEGEN_SELECTIONDAG_SDNODEDBGVALUE_H
 #define LLVM_LIB_CODEGEN_SELECTIONDAG_SDNODEDBGVALUE_H
 
-#include "llvm/ADT/SmallVector.h"
 #include "llvm/IR/DebugLoc.h"
 #include "llvm/Support/DataTypes.h"
 
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 955e4c6d5ab..deab0e472f6 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -34,7 +34,6 @@
 #include "llvm/IR/GlobalAlias.h"
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/Intrinsics.h"
-#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/ManagedStatic.h"
diff --git a/llvm/lib/CodeGen/SelectionDAG/StatepointLowering.h b/llvm/lib/CodeGen/SelectionDAG/StatepointLowering.h
index 422b634d917..b043184003a 100644
--- a/llvm/lib/CodeGen/SelectionDAG/StatepointLowering.h
+++ b/llvm/lib/CodeGen/SelectionDAG/StatepointLowering.h
@@ -19,7 +19,6 @@
 #include "llvm/ADT/SmallBitVector.h"
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"
-#include <vector>
 
 namespace llvm {
 class SelectionDAGBuilder;
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index e58a6343c69..3e9c3379caa 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -27,7 +27,6 @@
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCExpr.h"
-#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"