Fix LTO after the recent MC subtarget refactoring.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134930 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index 630a995..82b226b 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -73,6 +73,7 @@
       _nativeObjectFile(NULL)
 {
     InitializeAllTargets();
+    InitializeAllMCSubtargetInfos();
     InitializeAllAsmPrinters();
 }