Index: lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
===================================================================
--- lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
+++ lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
@@ -1317,18 +1317,28 @@
     assert(Index < LiveVec.size() && "Bug in std::find?");
     return Index;
   };
-
+  Module *M = StatepointToken->getModule();
+  
   // All gc_relocate are set to i8 addrspace(1)* type. We originally generated
   // unique declarations for each pointer type, but this proved problematic
   // because the intrinsic mangling code is incomplete and fragile.  Since
   // we're moving towards a single unified pointer type anyways, we can just
   // cast everything to an i8* of the right address space.  A bitcast is added
   // later to convert gc_relocate to the actual value's type. 
-  Module *M = StatepointToken->getModule();
-  auto AS = cast<PointerType>(LiveVariables[0]->getType())->getAddressSpace();
-  Type *Types[] = {Type::getInt8PtrTy(M->getContext(), AS)};
-  Value *GCRelocateDecl =
-    Intrinsic::getDeclaration(M, Intrinsic::experimental_gc_relocate, Types);
+  auto getGCRelocateDecl = [&] (Type *Ty) {
+    assert(isHandledGCPointerType(Ty));
+    auto AS = Ty->getScalarType()->getPointerAddressSpace();
+    Type *NewTy = Type::getInt8PtrTy(M->getContext(), AS);
+    if (auto *VT = dyn_cast<VectorType>(Ty))
+      NewTy = VectorType::get(NewTy, VT->getNumElements());
+    return Intrinsic::getDeclaration(M, Intrinsic::experimental_gc_relocate,
+                                     {NewTy});
+  };
+
+  // Lazily populated map from input types to the canonicalized form mentioned
+  // in the comment above.  This should probably be cached somewhere more
+  // broadly.
+  DenseMap<Type*, Value*> TypeToDeclMap;
 
   for (unsigned i = 0; i < LiveVariables.size(); i++) {
     // Generate the gc.relocate call and save the result
@@ -1336,6 +1346,11 @@
       Builder.getInt32(LiveStart + FindIndex(LiveVariables, BasePtrs[i]));
     Value *LiveIdx = Builder.getInt32(LiveStart + i);
 
+    Type *Ty = LiveVariables[i]->getType();
+    if (!TypeToDeclMap.count(Ty))
+      TypeToDeclMap[Ty] = getGCRelocateDecl(Ty);
+    Value *GCRelocateDecl = TypeToDeclMap[Ty];
+
     // only specify a debug name if we can give a useful one
     CallInst *Reloc = Builder.CreateCall(
         GCRelocateDecl, {StatepointToken, BaseIdx, LiveIdx},
@@ -2478,7 +2493,8 @@
 #ifndef NDEBUG
   // sanity check
   for (auto *Ptr : Live)
-    assert(isGCPointerType(Ptr->getType()) && "must be a gc pointer type");
+    assert(isHandledGCPointerType(Ptr->getType()) &&
+           "must be a gc pointer type");
 #endif
 
   relocationViaAlloca(F, DT, Live, Records);
Index: test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector-nosplit.ll
===================================================================
--- test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector-nosplit.ll
+++ test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector-nosplit.ll
@@ -0,0 +1,112 @@
+; Test that we can correctly handle vectors of pointers in statepoint 
+; rewriting.  
+; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -rs4gc-split-vector-values=0 -S | FileCheck  %s
+
+; A non-vector relocation for comparison
+define i64 addrspace(1)* @test(i64 addrspace(1)* %obj) gc "statepoint-example" {
+; CHECK-LABEL: test
+; CHECK: gc.statepoint
+; CHECK-NEXT: gc.relocate
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: ret i64 addrspace(1)*
+; A base vector from a argument
+entry:
+  call void @do_safepoint() [ "deopt"() ]
+  ret i64 addrspace(1)* %obj
+}
+
+; A vector argument
+define <2 x i64 addrspace(1)*> @test2(<2 x i64 addrspace(1)*> %obj) gc "statepoint-example" {
+; CHECK-LABEL: test2
+; CHECK-NEXT: gc.statepoint
+; CHECK-NEXT: gc.relocate
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: ret <2 x i64 addrspace(1)*>
+  call void @do_safepoint() [ "deopt"() ]
+  ret <2 x i64 addrspace(1)*> %obj
+}
+
+; A load
+define <2 x i64 addrspace(1)*> @test3(<2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" {
+; CHECK-LABEL: test3
+; CHECK: load
+; CHECK-NEXT: gc.statepoint
+; CHECK-NEXT: gc.relocate
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: ret <2 x i64 addrspace(1)*>
+entry:
+  %obj = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
+  call void @do_safepoint() [ "deopt"() ]
+  ret <2 x i64 addrspace(1)*> %obj
+}
+
+declare i32 @fake_personality_function()
+
+; When a statepoint is an invoke rather than a call
+define <2 x i64 addrspace(1)*> @test4(<2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" personality i32 ()* @fake_personality_function {
+; CHECK-LABEL: test4
+; CHECK: load
+; CHECK-NEXT: gc.statepoint
+entry:
+  %obj = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
+  invoke void @do_safepoint() [ "deopt"() ]
+          to label %normal_return unwind label %exceptional_return
+
+normal_return:                                    ; preds = %entry
+; CHECK-LABEL: normal_return:
+; CHECK: gc.relocate
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: ret <2 x i64 addrspace(1)*>
+  ret <2 x i64 addrspace(1)*> %obj
+
+exceptional_return:                               ; preds = %entry
+; CHECK-LABEL: exceptional_return:
+; CHECK: gc.relocate
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: ret <2 x i64 addrspace(1)*>
+  %landing_pad4 = landingpad token
+          cleanup
+  ret <2 x i64 addrspace(1)*> %obj
+}
+
+; A newly created vector
+define <2 x i64 addrspace(1)*> @test5(i64 addrspace(1)* %p) gc "statepoint-example" {
+; CHECK-LABEL: test5
+; CHECK: insertelement
+; CHECK-NEXT: gc.statepoint
+; CHECK-NEXT: gc.relocate
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %vec.relocated.casted
+entry:
+  %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %p, i32 0
+  call void @do_safepoint() [ "deopt"() ]
+  ret <2 x i64 addrspace(1)*> %vec
+}
+
+; A merge point
+define <2 x i64 addrspace(1)*> @test6(i1 %cnd, <2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" {
+; CHECK-LABEL: test6
+entry:
+  br i1 %cnd, label %taken, label %untaken
+
+taken:                                            ; preds = %entry
+  %obja = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
+  br label %merge
+
+untaken:                                          ; preds = %entry
+  %objb = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
+  br label %merge
+
+merge:                                            ; preds = %untaken, %taken
+; CHECK-LABEL: merge:
+; CHECK-NEXT: = phi
+; CHECK-NEXT: gc.statepoint
+; CHECK-NEXT: gc.relocate
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: ret <2 x i64 addrspace(1)*>
+  %obj = phi <2 x i64 addrspace(1)*> [ %obja, %taken ], [ %objb, %untaken ]
+  call void @do_safepoint() [ "deopt"() ]
+  ret <2 x i64 addrspace(1)*> %obj
+}
+
+declare void @do_safepoint()
Index: test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector.ll
===================================================================
--- test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector.ll
+++ test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector.ll
@@ -1,6 +1,6 @@
 ; Test that we can correctly handle vectors of pointers in statepoint 
 ; rewriting.  Currently, we scalarize, but that's an implementation detail.
-; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S | FileCheck  %s
+; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -rs4gc-split-vector-values -S | FileCheck  %s
 
 ; A non-vector relocation for comparison
 
Index: test/Transforms/RewriteStatepointsForGC/live-vector.ll
===================================================================
--- test/Transforms/RewriteStatepointsForGC/live-vector.ll
+++ test/Transforms/RewriteStatepointsForGC/live-vector.ll
@@ -1,6 +1,6 @@
 ; Test that we can correctly handle vectors of pointers in statepoint 
 ; rewriting.  Currently, we scalarize, but that's an implementation detail.
-; RUN: opt %s -rewrite-statepoints-for-gc -S | FileCheck  %s
+; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-split-vector-values -S | FileCheck  %s
 
 ; A non-vector relocation for comparison
 define i64 addrspace(1)* @test(i64 addrspace(1)* %obj) gc "statepoint-example" {