[weak vtables] Remove a bunch of weak vtables

This patch removes most of the trivial cases of weak vtables by pinning them to
a single object file.

Differential Revision: http://llvm-reviews.chandlerc.com/D2068

Reviewed by Andy

llvm-svn: 194865

7 files changed, 29 insertions, 1 deletions

diff --git a/llvm/lib/Target/SystemZ/CMakeLists.txt b/llvm/lib/Target/SystemZ/CMakeLists.txt
index 8a4eaa35e92..d21c0a8086f 100644
--- a/llvm/lib/Target/SystemZ/CMakeLists.txt
+++ b/llvm/lib/Target/SystemZ/CMakeLists.txt
@@ -21,6 +21,7 @@ add_llvm_target(SystemZCodeGen
   SystemZISelLowering.cpp
   SystemZInstrInfo.cpp
   SystemZLongBranch.cpp
+  SystemZMachineFunctionInfo.cpp
   SystemZMCInstLower.cpp
   SystemZRegisterInfo.cpp
   SystemZSelectionDAGInfo.cpp
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
index 2ebbc0d81ae..67aacf3551f 100644
--- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
@@ -17,7 +17,7 @@
 #include "llvm/CodeGen/LiveVariables.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 
-#define GET_INSTRINFO_CTOR
+#define GET_INSTRINFO_CTOR_DTOR
 #define GET_INSTRMAP_INFO
 #include "SystemZGenInstrInfo.inc"
 
@@ -37,6 +37,9 @@ static bool isHighReg(unsigned int Reg) {
   return false;
 }
 
+// pin vtable to this file
+void SystemZInstrInfo::anchor() {}
+
 SystemZInstrInfo::SystemZInstrInfo(SystemZTargetMachine &tm)
   : SystemZGenInstrInfo(SystemZ::ADJCALLSTACKDOWN, SystemZ::ADJCALLSTACKUP),
     RI(tm), TM(tm) {
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.h b/llvm/lib/Target/SystemZ/SystemZInstrInfo.h
index 7978be42c90..be4c8fe2add 100644
--- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.h
+++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.h
@@ -127,6 +127,7 @@ class SystemZInstrInfo : public SystemZGenInstrInfo {
   void emitGRX32Move(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
                      DebugLoc DL, unsigned DestReg, unsigned SrcReg,
                      unsigned LowLowOpcode, unsigned Size, bool KillSrc) const;
+  virtual void anchor();
   
 public:
   explicit SystemZInstrInfo(SystemZTargetMachine &TM);
diff --git a/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.cpp b/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.cpp
new file mode 100644
index 00000000000..00572d0b9d7
--- /dev/null
+++ b/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.cpp
@@ -0,0 +1,17 @@
+//== SystemZMachineFuctionInfo.cpp - SystemZ machine function info-*- C++ -*-=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "SystemZMachineFunctionInfo.h"
+
+using namespace llvm;
+
+
+// pin vtable to this file
+void SystemZMachineFunctionInfo::anchor() {}
+
diff --git a/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.h b/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.h
index 69c269137e0..509cef6d646 100644
--- a/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.h
+++ b/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.h
@@ -23,6 +23,8 @@ class SystemZMachineFunctionInfo : public MachineFunctionInfo {
   unsigned RegSaveFrameIndex;
   bool ManipulatesSP;
 
+  virtual void anchor();
+
 public:
   explicit SystemZMachineFunctionInfo(MachineFunction &MF)
     : LowSavedGPR(0), HighSavedGPR(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
diff --git a/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp b/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
index 474192099f2..b9a9db2aa77 100644
--- a/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
@@ -18,6 +18,9 @@
 
 using namespace llvm;
 
+// pin vtabel to this file
+void SystemZSubtarget::anchor() {}
+
 SystemZSubtarget::SystemZSubtarget(const std::string &TT,
                                    const std::string &CPU,
                                    const std::string &FS)
diff --git a/llvm/lib/Target/SystemZ/SystemZSubtarget.h b/llvm/lib/Target/SystemZ/SystemZSubtarget.h
index 74d3f90ad74..5817491d458 100644
--- a/llvm/lib/Target/SystemZ/SystemZSubtarget.h
+++ b/llvm/lib/Target/SystemZ/SystemZSubtarget.h
@@ -26,6 +26,7 @@ class GlobalValue;
 class StringRef;
 
 class SystemZSubtarget : public SystemZGenSubtargetInfo {
+  virtual void anchor();
 protected:
   bool HasDistinctOps;
   bool HasLoadStoreOnCond;