[PATCH] Gather and Scatter intrinsics.

[hfinkel at anl.gov]

This needs LangRef updates for the intrinsics. Otherwise, I see no fundamental problems here.


REPOSITORY
  rL LLVM

================
Comment at: lib/IR/Verifier.cpp:2568
@@ +2567,3 @@
+      return true;
+    PointerType *ThisArgEltTy = dyn_cast<PointerType>(ThisArgVecTy->getVectorElementType());
+    if (!ThisArgEltTy)
----------------
Line too long?

================
Comment at: lib/IR/Verifier.cpp:2571
@@ +2570,3 @@
+      return true;
+    return !(ThisArgEltTy->getElementType() == ReferenceType->getVectorElementType());
+  }
----------------
This one too.

http://reviews.llvm.org/D7433

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