[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. The memory leaks in this version have been fixed. Thanks
Alexey for pointing them out.

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

Reviewed by Andy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195064 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 5 insertions, 2 deletions

diff --git a/lib/Target/Mips/MipsInstrInfo.cpp b/lib/Target/Mips/MipsInstrInfo.cpp
index 7b04a9a375..0ebad05847 100644
--- a/lib/Target/Mips/MipsInstrInfo.cpp
+++ b/lib/Target/Mips/MipsInstrInfo.cpp
@@ -22,11 +22,14 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/TargetRegistry.h"
 
-#define GET_INSTRINFO_CTOR
+#define GET_INSTRINFO_CTOR_DTOR
 #include "MipsGenInstrInfo.inc"
 
 using namespace llvm;
 
+// Pin the vtable to this file.
+void MipsInstrInfo::anchor() {}
+
 MipsInstrInfo::MipsInstrInfo(MipsTargetMachine &tm, unsigned UncondBr)
   : MipsGenInstrInfo(Mips::ADJCALLSTACKDOWN, Mips::ADJCALLSTACKUP),
     TM(tm), UncondBrOpc(UncondBr) {}
diff --git a/lib/Target/Mips/MipsInstrInfo.h b/lib/Target/Mips/MipsInstrInfo.h
index b6480ef337..d9ac961cd3 100644
--- a/lib/Target/Mips/MipsInstrInfo.h
+++ b/lib/Target/Mips/MipsInstrInfo.h
@@ -27,6 +27,7 @@
 namespace llvm {
 
 class MipsInstrInfo : public MipsGenInstrInfo {
+  virtual void anchor();
 protected:
   MipsTargetMachine &TM;
   unsigned UncondBrOpc;
diff --git a/lib/Target/Mips/MipsTargetStreamer.h b/lib/Target/Mips/MipsTargetStreamer.h
index 0037f3f58c..a3908ce1fa 100644
--- a/lib/Target/Mips/MipsTargetStreamer.h
+++ b/lib/Target/Mips/MipsTargetStreamer.h
@@ -16,7 +16,6 @@
 namespace llvm {
 class MipsTargetStreamer : public MCTargetStreamer {
   virtual void anchor();
-
 public:
   virtual void emitMipsHackELFFlags(unsigned Flags) = 0;
   virtual void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) = 0;