This patch adds support for the vector quadword add/sub instructions introduced
in POWER8:

vadduqm
vaddeuqm
vaddcuq
vaddecuq
vsubuqm
vsubeuqm
vsubcuq
vsubecuq
In addition to adding the instructions themselves, it also adds support for the
v1i128 type for intrinsics (Intrinsics.td, Function.cpp, and
IntrinsicEmitter.cpp).

http://reviews.llvm.org/D9081

llvm-svn: 238144
diff --git a/llvm/lib/IR/Function.cpp b/llvm/lib/IR/Function.cpp
index c579b6b..cf8e3ed 100644
--- a/llvm/lib/IR/Function.cpp
+++ b/llvm/lib/IR/Function.cpp
@@ -548,7 +548,8 @@
   IIT_HALF_VEC_ARG = 29,
   IIT_SAME_VEC_WIDTH_ARG = 30,
   IIT_PTR_TO_ARG = 31,
-  IIT_VEC_OF_PTRS_TO_ELT = 32
+  IIT_VEC_OF_PTRS_TO_ELT = 32,
+  IIT_I128 = 33
 };
 
 
@@ -595,6 +596,9 @@
   case IIT_I64:
     OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 64));
     return;
+  case IIT_I128:
+    OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 128));
+    return;
   case IIT_V1:
     OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 1));
     DecodeIITType(NextElt, Infos, OutputTable);