long double patch 2 of N.  Handle it in TargetData.
(I've tried to get the info right for all targets,
but I'm not expert on all of them - check yours.)

llvm-svn: 40792
diff --git a/llvm/lib/Target/Alpha/AlphaTargetMachine.cpp b/llvm/lib/Target/Alpha/AlphaTargetMachine.cpp
index f051da4..85ec028 100644
--- a/llvm/lib/Target/Alpha/AlphaTargetMachine.cpp
+++ b/llvm/lib/Target/Alpha/AlphaTargetMachine.cpp
@@ -57,7 +57,7 @@
 }
 
 AlphaTargetMachine::AlphaTargetMachine(const Module &M, const std::string &FS)
-  : DataLayout("e"),
+  : DataLayout("e-f128:128:128"),
     FrameInfo(TargetFrameInfo::StackGrowsDown, 16, 0),
     JITInfo(*this),
     Subtarget(M, FS),