For PR780:

1. Move IncludeFile.h to System library
2. Move IncludeFile.cpp to System library
3. #1 and #2 required to prevent cyclic library dependencies for libSystem
4. Convert all existing uses of Support/IncludeFile.h to System/IncludeFile.h
5. Add IncludeFile support to various lib/System classes.
6. Add new lib/System classes to LinkAllVMCore.h
All this in an attempt to pull in lib/System to what's required for VMCore


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29287 91177308-0d34-0410-b5e6-96231b3b80d8

13 files changed, 34 insertions, 75 deletions

diff --git a/include/llvm/Analysis/AliasAnalysis.h b/include/llvm/Analysis/AliasAnalysis.h
index 2fff77420a..66f60ab547 100644
--- a/include/llvm/Analysis/AliasAnalysis.h
+++ b/include/llvm/Analysis/AliasAnalysis.h
@@ -31,7 +31,7 @@
 #define LLVM_ANALYSIS_ALIAS_ANALYSIS_H
 
 #include "llvm/Support/CallSite.h"
-#include "llvm/Support/IncludeFile.h"
+#include "llvm/System/IncludeFile.h"
 
 namespace llvm {
 
diff --git a/include/llvm/InlineAsm.h b/include/llvm/InlineAsm.h
index 6e7aab1cb0..b9f707cf83 100644
--- a/include/llvm/InlineAsm.h
+++ b/include/llvm/InlineAsm.h
@@ -17,7 +17,7 @@
 #define LLVM_INLINEASM_H
 
 #include "llvm/Value.h"
-#include "llvm/Support/IncludeFile.h"
+#include "llvm/System/IncludeFile.h"
 #include <vector>
 
 namespace llvm {
diff --git a/include/llvm/IntrinsicInst.h b/include/llvm/IntrinsicInst.h
index 5b784fc2b9..996c83cb8e 100644
--- a/include/llvm/IntrinsicInst.h
+++ b/include/llvm/IntrinsicInst.h
@@ -28,7 +28,7 @@
 #include "llvm/Function.h"
 #include "llvm/Instructions.h"
 #include "llvm/Intrinsics.h"
-#include "llvm/Support/IncludeFile.h"
+#include "llvm/System/IncludeFile.h"
 
 namespace llvm {
   /// IntrinsicInst - A useful wrapper class for inspecting calls to intrinsic
diff --git a/include/llvm/LinkAllVMCore.h b/include/llvm/LinkAllVMCore.h
index d0366ebe1e..fa46dbb1f1 100644
--- a/include/llvm/LinkAllVMCore.h
+++ b/include/llvm/LinkAllVMCore.h
@@ -16,13 +16,19 @@
 #ifndef LLVM_LINKALLVMCORE_H
 #define LLVM_LINKALLVMCORE_H
 
-#include "llvm/Support/IncludeFile.h"
-#include "llvm/Support/Mangler.h"
+#include "llvm/System/IncludeFile.h"
+
 #include "llvm/Module.h"
 #include "llvm/Instructions.h"
 #include "llvm/IntrinsicInst.h"
 #include "llvm/InlineAsm.h"
 #include "llvm/Analysis/Verifier.h"
+#include "llvm/System/Memory.h"
+#include "llvm/System/Mutex.h"
+#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/Mangler.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/SlowOperationInformer.h"
 
 namespace {
   struct ForceVMCoreLinking {
diff --git a/include/llvm/PassSupport.h b/include/llvm/PassSupport.h
index 57dcce7950..9350e284fc 100644
--- a/include/llvm/PassSupport.h
+++ b/include/llvm/PassSupport.h
@@ -21,7 +21,7 @@
 #ifndef LLVM_PASS_SUPPORT_H
 #define LLVM_PASS_SUPPORT_H
 
-#include "llvm/Support/IncludeFile.h"
+#include "llvm/System/IncludeFile.h"
 // No need to include Pass.h, we are being included by it!
 
 namespace llvm {
diff --git a/include/llvm/Support/Dwarf.h b/include/llvm/Support/Dwarf.h
index 17622f4515..05260be2d7 100644
--- a/include/llvm/Support/Dwarf.h
+++ b/include/llvm/Support/Dwarf.h
@@ -16,6 +16,8 @@
 #ifndef LLVM_SUPPORT_DWARF_H
 #define LLVM_SUPPORT_DWARF_H
 
+#include "llvm/System/IncludeFile.h"
+
 namespace llvm {
 
 namespace dwarf {
@@ -546,4 +548,6 @@ const char *CallFrameString(unsigned Encoding);
 
 } // End of namespace llvm
 
+FORCE_DEFINING_FILE_TO_BE_LINKED(SupportDwarf)
+
 #endif
diff --git a/include/llvm/Support/IncludeFile.h b/include/llvm/Support/IncludeFile.h
deleted file mode 100644
index 798c6b454f..0000000000
--- a/include/llvm/Support/IncludeFile.h
+++ /dev/null
@@ -1,65 +0,0 @@
-//===- llvm/Support/IncludeFile.h - Ensure Linking Of Library ---*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file was developed by Reid Spencer and is distributed under the 
-// University of Illinois Open Source License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the FORCE_DEFINING_FILE_TO_BE_LINKED and DEFINE_FILE_FOR
-// macros.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_SUPPORT_INCLUDEFILE_H
-#define LLVM_SUPPORT_INCLUDEFILE_H
-
-/// This macro is the public interface that IncludeFile.h exports. This gives
-/// us the option to implement the "link the definition" capability in any 
-/// manner that we choose. All header files that depend on a specific .cpp
-/// file being linked at run time should use this macro instead of the
-/// IncludeFile class directly. 
-/// 
-/// For example, foo.h would use:<br/>
-/// <tt>FORCE_DEFINING_FILE_TO_BE_LINKED(foo)</tt><br/>
-/// 
-/// And, foo.cp would use:<br/>
-/// <tt>DEFINING_FILE_FOR(foo)</tt><br/>
-#define FORCE_DEFINING_FILE_TO_BE_LINKED(name) \
-  namespace llvm { \
-    extern char name ## LinkVar; \
-    static IncludeFile name ## LinkObj ( &name ## LinkVar ); \
-  } 
-
-/// This macro is the counterpart to FORCE_DEFINING_FILE_TO_BE_LINKED. It should
-/// be used in a .cpp file to define the name referenced in a header file that
-/// will cause linkage of the .cpp file. It should only be used at extern level.
-#define DEFINING_FILE_FOR(name) namespace llvm { char name ## LinkVar; }
-
-namespace llvm {
-
-/// This class is used in the implementation of FORCE_DEFINING_FILE_TO_BE_LINKED
-/// macro to make sure that the implementation of a header file is included 
-/// into a tool that uses the header.  This is solely 
-/// to overcome problems linking .a files and not getting the implementation 
-/// of compilation units we need. This is commonly an issue with the various
-/// Passes but also occurs elsewhere in LLVM. We like to use .a files because
-/// they link faster and provide the smallest executables. However, sometimes
-/// those executables are too small, if the program doesn't reference something
-/// that might be needed, especially by a loaded share object. This little class
-/// helps to resolve that problem. The basic strategy is to use this class in
-/// a header file and pass the address of a variable to the constructor. If the
-/// variable is defined in the header file's corresponding .cpp file then all
-/// tools/libraries that #include the header file will require the .cpp as well.
-/// For example:<br/>
-/// <tt>extern int LinkMyCodeStub;</tt><br/>
-/// <tt>static IncludeFile LinkMyModule(&LinkMyCodeStub);</tt><br/>
-/// @brief Class to ensure linking of corresponding object file.
-struct IncludeFile {
-  IncludeFile(void *);
-};
-
-}
-
-#endif
diff --git a/include/llvm/Support/Mangler.h b/include/llvm/Support/Mangler.h
index 50e49ff8a5..ac7deadf8b 100644
--- a/include/llvm/Support/Mangler.h
+++ b/include/llvm/Support/Mangler.h
@@ -14,7 +14,7 @@
 #ifndef LLVM_SUPPORT_MANGLER_H
 #define LLVM_SUPPORT_MANGLER_H
 
-#include "llvm/Support/IncludeFile.h"
+#include "llvm/System/IncludeFile.h"
 #include <map>
 #include <set>
 #include <string>
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h
index 0f5961ff73..228d35ceff 100644
--- a/include/llvm/Support/MathExtras.h
+++ b/include/llvm/Support/MathExtras.h
@@ -15,6 +15,7 @@
 #define LLVM_SUPPORT_MATHEXTRAS_H
 
 #include "llvm/Support/DataTypes.h"
+#include "llvm/System/IncludeFile.h"
 
 namespace llvm {
 
@@ -306,4 +307,7 @@ int IsInf (double d);
 
 } // End llvm namespace
 
+FORCE_DEFINING_FILE_TO_BE_LINKED(SupportIsInf)
+FORCE_DEFINING_FILE_TO_BE_LINKED(SupportIsNAN)
+
 #endif
diff --git a/include/llvm/Support/SlowOperationInformer.h b/include/llvm/Support/SlowOperationInformer.h
index d05792672a..0be01960ca 100644
--- a/include/llvm/Support/SlowOperationInformer.h
+++ b/include/llvm/Support/SlowOperationInformer.h
@@ -32,6 +32,7 @@
 #include <string>
 #include <cassert>
 #include "llvm/Support/DataTypes.h"
+#include "llvm/System/IncludeFile.h"
 
 namespace llvm {
   class SlowOperationInformer {
@@ -63,3 +64,5 @@ namespace llvm {
 } // end namespace llvm
 
 #endif /* SLOW_OPERATION_INFORMER_H */
+
+FORCE_DEFINING_FILE_TO_BE_LINKED(SupportSlowOperationInformer)
diff --git a/include/llvm/System/IncludeFile.h b/include/llvm/System/IncludeFile.h
index 798c6b454f..c9f3882359 100644
--- a/include/llvm/System/IncludeFile.h
+++ b/include/llvm/System/IncludeFile.h
@@ -1,4 +1,4 @@
-//===- llvm/Support/IncludeFile.h - Ensure Linking Of Library ---*- C++ -*-===//
+//===- llvm/System/IncludeFile.h - Ensure Linking Of Library ---*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -12,8 +12,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_SUPPORT_INCLUDEFILE_H
-#define LLVM_SUPPORT_INCLUDEFILE_H
+#ifndef LLVM_SYSTEM_INCLUDEFILE_H
+#define LLVM_SYSTEM_INCLUDEFILE_H
 
 /// This macro is the public interface that IncludeFile.h exports. This gives
 /// us the option to implement the "link the definition" capability in any 
diff --git a/include/llvm/System/Memory.h b/include/llvm/System/Memory.h
index 27d7c0cb5c..c343177e17 100644
--- a/include/llvm/System/Memory.h
+++ b/include/llvm/System/Memory.h
@@ -15,6 +15,7 @@
 #define LLVM_SYSTEM_MEMORY_H
 
 #include <string>
+#include "llvm/System/IncludeFile.h"
 
 namespace llvm {
 namespace sys {
@@ -70,4 +71,6 @@ namespace sys {
 }
 }
 
+FORCE_DEFINING_FILE_TO_BE_LINKED(SystemMemory)
+
 #endif
diff --git a/include/llvm/System/Mutex.h b/include/llvm/System/Mutex.h
index 94dd811378..27bcea18d3 100644
--- a/include/llvm/System/Mutex.h
+++ b/include/llvm/System/Mutex.h
@@ -14,6 +14,8 @@
 #ifndef LLVM_SYSTEM_MUTEX_H
 #define LLVM_SYSTEM_MUTEX_H
 
+#include "llvm/System/IncludeFile.h"
+
 namespace llvm
 {
   namespace sys
@@ -81,4 +83,6 @@ namespace llvm
   }
 }
 
+FORCE_DEFINING_FILE_TO_BE_LINKED(SystemMutex)
+
 #endif