Index: lib/CodeGen/GlobalISel/IRTranslator.cpp
===================================================================
--- lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -1074,6 +1074,13 @@
       Ops.push_back(getOrCreateVReg(Elt));
     }
     EntryBuilder.buildMerge(Reg, Ops);
+  } else if (auto CV = dyn_cast<ConstantDataVector>(&C)) {
+    std::vector<unsigned> Ops;
+    for (unsigned i = 0; i < CV->getNumElements(); ++i) {
+      Constant &Elt = *CV->getElementAsConstant(i);
+      Ops.push_back(getOrCreateVReg(Elt));
+    }
+    EntryBuilder.buildMerge(Reg, Ops);
   } else if (auto CE = dyn_cast<ConstantExpr>(&C)) {
     switch(CE->getOpcode()) {
 #define HANDLE_INST(NUM, OPCODE, CLASS)                         \
Index: test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll
===================================================================
--- test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll
+++ test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll
@@ -1328,3 +1328,43 @@
   %elt = extractelement <3 x i32> zeroinitializer, i32 1
   ret i32 %elt
 }
+
+define <2 x i32> @test_constantdatavector_v2i32() {
+; CHECK-LABEL: name: test_constantdatavector_v2i32
+; CHECK: [[C1:%[0-9]+]](s32) = G_CONSTANT i32 1
+; CHECK: [[C2:%[0-9]+]](s32) = G_CONSTANT i32 2
+; CHECK: [[VEC:%[0-9]+]](<2 x s32>) = G_MERGE_VALUES [[C1]](s32), [[C2]](s32)
+; CHECK: %d0 = COPY [[VEC]](<2 x s32>)
+  ret <2 x i32> <i32 1, i32 2>
+}
+
+define i32 @test_constantdatavector_v3i32() {
+; CHECK-LABEL: name: test_constantdatavector_v3i32
+; CHECK: [[C1:%[0-9]+]](s32) = G_CONSTANT i32 1
+; CHECK: [[C2:%[0-9]+]](s32) = G_CONSTANT i32 2
+; CHECK: [[C3:%[0-9]+]](s32) = G_CONSTANT i32 3
+; CHECK: [[VEC:%[0-9]+]](<3 x s32>) = G_MERGE_VALUES [[C1]](s32), [[C2]](s32), [[C3]](s32)
+; CHECK: G_EXTRACT_VECTOR_ELT [[VEC]](<3 x s32>)
+  %elt = extractelement <3 x i32> <i32 1, i32 2, i32 3>, i32 1
+  ret i32 %elt
+}
+
+define <4 x i32> @test_constantdatavector_v4i32() {
+; CHECK-LABEL: name: test_constantdatavector_v4i32
+; CHECK: [[C1:%[0-9]+]](s32) = G_CONSTANT i32 1
+; CHECK: [[C2:%[0-9]+]](s32) = G_CONSTANT i32 2
+; CHECK: [[C3:%[0-9]+]](s32) = G_CONSTANT i32 3
+; CHECK: [[C4:%[0-9]+]](s32) = G_CONSTANT i32 4
+; CHECK: [[VEC:%[0-9]+]](<4 x s32>) = G_MERGE_VALUES [[C1]](s32), [[C2]](s32), [[C3]](s32), [[C4]](s32)
+; CHECK: %q0 = COPY [[VEC]](<4 x s32>)
+  ret <4 x i32> <i32 1, i32 2, i32 3, i32 4>
+}
+
+define <2 x double> @test_constantdatavector_v2f64() {
+; CHECK-LABEL: name: test_constantdatavector_v2f64
+; CHECK: [[FC1:%[0-9]+]](s64) = G_FCONSTANT double 1.000000e+00
+; CHECK: [[FC2:%[0-9]+]](s64) = G_FCONSTANT double 2.000000e+00
+; CHECK: [[VEC:%[0-9]+]](<2 x s64>) = G_MERGE_VALUES [[FC1]](s64), [[FC2]](s64)
+; CHECK: %q0 = COPY [[VEC]](<2 x s64>)
+  ret <2 x double> <double 1.0, double 2.0>
+}