[Mips] Explicitly instantiate MipsELFFile template class

Use explicit instantiation to reduce object files size.

llvm-svn: 234729

lld/lib/ReaderWriter/ELF/Mips/CMakeLists.txt

@@ -1,5 +1,6 @@
 add_llvm_library(lldMipsELFTarget
   MipsCtorsOrderPass.cpp
+  MipsELFFile.cpp
   MipsELFFlagsMerger.cpp
   MipsLinkingContext.cpp
   MipsRelocationHandler.cpp

lld/lib/ReaderWriter/ELF/Mips/MipsELFFile.cpp

@@ -0,0 +1,21 @@
+//===- lib/ReaderWriter/ELF/Mips/MipsELFFile.cpp --------------------------===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MipsELFFile.h"
+
+namespace lld {
+namespace elf {
+
+MIPSFILE_INSTANTIATION(Mips32ELType)
+MIPSFILE_INSTANTIATION(Mips64ELType)
+MIPSFILE_INSTANTIATION(Mips32BEType)
+MIPSFILE_INSTANTIATION(Mips64BEType)
+
+}
+}

lld/lib/ReaderWriter/ELF/Mips/MipsELFFile.h

@@ -289,6 +289,21 @@ private:
   }
 };
 
+#define EXTERN_MIPSFILE_INSTANTIATION(T)                                       \
+  EXTERN_TEMPLATE_INSTANTIATION(class MipsELFDefinedAtom<T>);                  \
+  EXTERN_TEMPLATE_INSTANTIATION(class MipsELFReference<T>);                    \
+  EXTERN_TEMPLATE_INSTANTIATION(class MipsELFFile<T>);
+
+#define MIPSFILE_INSTANTIATION(T)                                              \
+  TEMPLATE_INSTANTIATION(class MipsELFDefinedAtom<T>);                         \
+  TEMPLATE_INSTANTIATION(class MipsELFReference<T>);                           \
+  TEMPLATE_INSTANTIATION(class MipsELFFile<T>);
+
+EXTERN_MIPSFILE_INSTANTIATION(Mips32ELType)
+EXTERN_MIPSFILE_INSTANTIATION(Mips64ELType)
+EXTERN_MIPSFILE_INSTANTIATION(Mips32BEType)
+EXTERN_MIPSFILE_INSTANTIATION(Mips64BEType)
+
 } // elf
 } // lld