diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index fd778909eeb55..3576cefab86e6 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -2775,6 +2775,13 @@ InstructionCost AArch64TTIImpl::getSpliceCost(VectorType *Tp, int Index) {
       { TTI::SK_Splice, MVT::nxv2f64,  1 },
   };
 
+  // The code-generator is currently not able to handle scalable vectors
+  // of <vscale x 1 x eltty> yet, so return an invalid cost to avoid selecting
+  // it. This change will be removed when code-generation for these types is
+  // sufficiently reliable.
+  if (Tp->getElementCount() == ElementCount::getScalable(1))
+    return InstructionCost::getInvalid();
+
   std::pair<InstructionCost, MVT> LT = getTypeLegalizationCost(Tp);
   Type *LegalVTy = EVT(LT.second).getTypeForEVT(Tp->getContext());
   TTI::TargetCostKind CostKind = TTI::TCK_RecipThroughput;
diff --git a/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll b/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll
index e42cfdd1139c0..c22a519b3dc2e 100644
--- a/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll
+++ b/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll
@@ -394,23 +394,29 @@ define void @vector_splice() #0 {
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv2i1 = call <vscale x 2 x i1> @llvm.experimental.vector.splice.nxv2i1(<vscale x 2 x i1> zeroinitializer, <vscale x 2 x i1> zeroinitializer, i32 1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv16i8_neg = call <vscale x 16 x i8> @llvm.experimental.vector.splice.nxv16i8(<vscale x 16 x i8> zeroinitializer, <vscale x 16 x i8> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %splice_nxv32i8_neg = call <vscale x 32 x i8> @llvm.experimental.vector.splice.nxv32i8(<vscale x 32 x i8> zeroinitializer, <vscale x 32 x i8> zeroinitializer, i32 -1)
+; CHECK-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1i16_neg = call <vscale x 1 x i16> @llvm.experimental.vector.splice.nxv1i16(<vscale x 1 x i16> zeroinitializer, <vscale x 1 x i16> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv2i16_neg = call <vscale x 2 x i16> @llvm.experimental.vector.splice.nxv2i16(<vscale x 2 x i16> zeroinitializer, <vscale x 2 x i16> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv4i16_neg = call <vscale x 4 x i16> @llvm.experimental.vector.splice.nxv4i16(<vscale x 4 x i16> zeroinitializer, <vscale x 4 x i16> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv8i16_neg = call <vscale x 8 x i16> @llvm.experimental.vector.splice.nxv8i16(<vscale x 8 x i16> zeroinitializer, <vscale x 8 x i16> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %splice_nxv16i16_neg = call <vscale x 16 x i16> @llvm.experimental.vector.splice.nxv16i16(<vscale x 16 x i16> zeroinitializer, <vscale x 16 x i16> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv4i32_neg = call <vscale x 4 x i32> @llvm.experimental.vector.splice.nxv4i32(<vscale x 4 x i32> zeroinitializer, <vscale x 4 x i32> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %splice_nxv8i32_neg = call <vscale x 8 x i32> @llvm.experimental.vector.splice.nxv8i32(<vscale x 8 x i32> zeroinitializer, <vscale x 8 x i32> zeroinitializer, i32 -1)
+; CHECK-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1i64_neg = call <vscale x 1 x i64> @llvm.experimental.vector.splice.nxv1i64(<vscale x 1 x i64> zeroinitializer, <vscale x 1 x i64> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv2i64_neg = call <vscale x 2 x i64> @llvm.experimental.vector.splice.nxv2i64(<vscale x 2 x i64> zeroinitializer, <vscale x 2 x i64> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %splice_nxv4i64_neg = call <vscale x 4 x i64> @llvm.experimental.vector.splice.nxv4i64(<vscale x 4 x i64> zeroinitializer, <vscale x 4 x i64> zeroinitializer, i32 -1)
+; CHECK-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1f16_neg = call <vscale x 1 x half> @llvm.experimental.vector.splice.nxv1f16(<vscale x 1 x half> zeroinitializer, <vscale x 1 x half> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv2f16_neg = call <vscale x 2 x half> @llvm.experimental.vector.splice.nxv2f16(<vscale x 2 x half> zeroinitializer, <vscale x 2 x half> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv4f16_neg = call <vscale x 4 x half> @llvm.experimental.vector.splice.nxv4f16(<vscale x 4 x half> zeroinitializer, <vscale x 4 x half> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv8f16_neg = call <vscale x 8 x half> @llvm.experimental.vector.splice.nxv8f16(<vscale x 8 x half> zeroinitializer, <vscale x 8 x half> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %splice_nxv16f16_neg = call <vscale x 16 x half> @llvm.experimental.vector.splice.nxv16f16(<vscale x 16 x half> zeroinitializer, <vscale x 16 x half> zeroinitializer, i32 -1)
+; CHECK-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1f32_neg = call <vscale x 1 x float> @llvm.experimental.vector.splice.nxv1f32(<vscale x 1 x float> zeroinitializer, <vscale x 1 x float> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv2f32_neg = call <vscale x 2 x float> @llvm.experimental.vector.splice.nxv2f32(<vscale x 2 x float> zeroinitializer, <vscale x 2 x float> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv4f32_neg = call <vscale x 4 x float> @llvm.experimental.vector.splice.nxv4f32(<vscale x 4 x float> zeroinitializer, <vscale x 4 x float> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %splice_nxv8f32_neg = call <vscale x 8 x float> @llvm.experimental.vector.splice.nxv8f32(<vscale x 8 x float> zeroinitializer, <vscale x 8 x float> zeroinitializer, i32 -1)
+; CHECK-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1f64_neg = call <vscale x 1 x double> @llvm.experimental.vector.splice.nxv1f64(<vscale x 1 x double> zeroinitializer, <vscale x 1 x double> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv2f64_neg = call <vscale x 2 x double> @llvm.experimental.vector.splice.nxv2f64(<vscale x 2 x double> zeroinitializer, <vscale x 2 x double> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %splice_nxv4f64_neg = call <vscale x 4 x double> @llvm.experimental.vector.splice.nxv4f64(<vscale x 4 x double> zeroinitializer, <vscale x 4 x double> zeroinitializer, i32 -1)
+; CHECK-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1bf16_neg = call <vscale x 1 x bfloat> @llvm.experimental.vector.splice.nxv1bf16(<vscale x 1 x bfloat> zeroinitializer, <vscale x 1 x bfloat> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv2bf16_neg = call <vscale x 2 x bfloat> @llvm.experimental.vector.splice.nxv2bf16(<vscale x 2 x bfloat> zeroinitializer, <vscale x 2 x bfloat> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv4bf16_neg = call <vscale x 4 x bfloat> @llvm.experimental.vector.splice.nxv4bf16(<vscale x 4 x bfloat> zeroinitializer, <vscale x 4 x bfloat> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %splice_nxv8bf16_neg = call <vscale x 8 x bfloat> @llvm.experimental.vector.splice.nxv8bf16(<vscale x 8 x bfloat> zeroinitializer, <vscale x 8 x bfloat> zeroinitializer, i32 -1)
@@ -419,6 +425,7 @@ define void @vector_splice() #0 {
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %splice_nxv8i1_neg = call <vscale x 8 x i1> @llvm.experimental.vector.splice.nxv8i1(<vscale x 8 x i1> zeroinitializer, <vscale x 8 x i1> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %splice_nxv4i1_neg = call <vscale x 4 x i1> @llvm.experimental.vector.splice.nxv4i1(<vscale x 4 x i1> zeroinitializer, <vscale x 4 x i1> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %splice_nxv2i1_neg = call <vscale x 2 x i1> @llvm.experimental.vector.splice.nxv2i1(<vscale x 2 x i1> zeroinitializer, <vscale x 2 x i1> zeroinitializer, i32 -1)
+; CHECK-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1i1_neg = call <vscale x 1 x i1> @llvm.experimental.vector.splice.nxv1i1(<vscale x 1 x i1> zeroinitializer, <vscale x 1 x i1> zeroinitializer, i32 -1)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; TYPE_BASED_ONLY-LABEL: 'vector_splice'
@@ -451,23 +458,29 @@ define void @vector_splice() #0 {
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2i1 = call <vscale x 2 x i1> @llvm.experimental.vector.splice.nxv2i1(<vscale x 2 x i1> zeroinitializer, <vscale x 2 x i1> zeroinitializer, i32 1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv16i8_neg = call <vscale x 16 x i8> @llvm.experimental.vector.splice.nxv16i8(<vscale x 16 x i8> zeroinitializer, <vscale x 16 x i8> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv32i8_neg = call <vscale x 32 x i8> @llvm.experimental.vector.splice.nxv32i8(<vscale x 32 x i8> zeroinitializer, <vscale x 32 x i8> zeroinitializer, i32 -1)
+; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1i16_neg = call <vscale x 1 x i16> @llvm.experimental.vector.splice.nxv1i16(<vscale x 1 x i16> zeroinitializer, <vscale x 1 x i16> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2i16_neg = call <vscale x 2 x i16> @llvm.experimental.vector.splice.nxv2i16(<vscale x 2 x i16> zeroinitializer, <vscale x 2 x i16> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4i16_neg = call <vscale x 4 x i16> @llvm.experimental.vector.splice.nxv4i16(<vscale x 4 x i16> zeroinitializer, <vscale x 4 x i16> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv8i16_neg = call <vscale x 8 x i16> @llvm.experimental.vector.splice.nxv8i16(<vscale x 8 x i16> zeroinitializer, <vscale x 8 x i16> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv16i16_neg = call <vscale x 16 x i16> @llvm.experimental.vector.splice.nxv16i16(<vscale x 16 x i16> zeroinitializer, <vscale x 16 x i16> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4i32_neg = call <vscale x 4 x i32> @llvm.experimental.vector.splice.nxv4i32(<vscale x 4 x i32> zeroinitializer, <vscale x 4 x i32> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv8i32_neg = call <vscale x 8 x i32> @llvm.experimental.vector.splice.nxv8i32(<vscale x 8 x i32> zeroinitializer, <vscale x 8 x i32> zeroinitializer, i32 -1)
+; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1i64_neg = call <vscale x 1 x i64> @llvm.experimental.vector.splice.nxv1i64(<vscale x 1 x i64> zeroinitializer, <vscale x 1 x i64> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2i64_neg = call <vscale x 2 x i64> @llvm.experimental.vector.splice.nxv2i64(<vscale x 2 x i64> zeroinitializer, <vscale x 2 x i64> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4i64_neg = call <vscale x 4 x i64> @llvm.experimental.vector.splice.nxv4i64(<vscale x 4 x i64> zeroinitializer, <vscale x 4 x i64> zeroinitializer, i32 -1)
+; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1f16_neg = call <vscale x 1 x half> @llvm.experimental.vector.splice.nxv1f16(<vscale x 1 x half> zeroinitializer, <vscale x 1 x half> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2f16_neg = call <vscale x 2 x half> @llvm.experimental.vector.splice.nxv2f16(<vscale x 2 x half> zeroinitializer, <vscale x 2 x half> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4f16_neg = call <vscale x 4 x half> @llvm.experimental.vector.splice.nxv4f16(<vscale x 4 x half> zeroinitializer, <vscale x 4 x half> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv8f16_neg = call <vscale x 8 x half> @llvm.experimental.vector.splice.nxv8f16(<vscale x 8 x half> zeroinitializer, <vscale x 8 x half> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv16f16_neg = call <vscale x 16 x half> @llvm.experimental.vector.splice.nxv16f16(<vscale x 16 x half> zeroinitializer, <vscale x 16 x half> zeroinitializer, i32 -1)
+; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1f32_neg = call <vscale x 1 x float> @llvm.experimental.vector.splice.nxv1f32(<vscale x 1 x float> zeroinitializer, <vscale x 1 x float> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2f32_neg = call <vscale x 2 x float> @llvm.experimental.vector.splice.nxv2f32(<vscale x 2 x float> zeroinitializer, <vscale x 2 x float> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4f32_neg = call <vscale x 4 x float> @llvm.experimental.vector.splice.nxv4f32(<vscale x 4 x float> zeroinitializer, <vscale x 4 x float> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv8f32_neg = call <vscale x 8 x float> @llvm.experimental.vector.splice.nxv8f32(<vscale x 8 x float> zeroinitializer, <vscale x 8 x float> zeroinitializer, i32 -1)
+; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1f64_neg = call <vscale x 1 x double> @llvm.experimental.vector.splice.nxv1f64(<vscale x 1 x double> zeroinitializer, <vscale x 1 x double> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2f64_neg = call <vscale x 2 x double> @llvm.experimental.vector.splice.nxv2f64(<vscale x 2 x double> zeroinitializer, <vscale x 2 x double> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4f64_neg = call <vscale x 4 x double> @llvm.experimental.vector.splice.nxv4f64(<vscale x 4 x double> zeroinitializer, <vscale x 4 x double> zeroinitializer, i32 -1)
+; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1bf16_neg = call <vscale x 1 x bfloat> @llvm.experimental.vector.splice.nxv1bf16(<vscale x 1 x bfloat> zeroinitializer, <vscale x 1 x bfloat> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2bf16_neg = call <vscale x 2 x bfloat> @llvm.experimental.vector.splice.nxv2bf16(<vscale x 2 x bfloat> zeroinitializer, <vscale x 2 x bfloat> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4bf16_neg = call <vscale x 4 x bfloat> @llvm.experimental.vector.splice.nxv4bf16(<vscale x 4 x bfloat> zeroinitializer, <vscale x 4 x bfloat> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv8bf16_neg = call <vscale x 8 x bfloat> @llvm.experimental.vector.splice.nxv8bf16(<vscale x 8 x bfloat> zeroinitializer, <vscale x 8 x bfloat> zeroinitializer, i32 -1)
@@ -476,6 +489,7 @@ define void @vector_splice() #0 {
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv8i1_neg = call <vscale x 8 x i1> @llvm.experimental.vector.splice.nxv8i1(<vscale x 8 x i1> zeroinitializer, <vscale x 8 x i1> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv4i1_neg = call <vscale x 4 x i1> @llvm.experimental.vector.splice.nxv4i1(<vscale x 4 x i1> zeroinitializer, <vscale x 4 x i1> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv2i1_neg = call <vscale x 2 x i1> @llvm.experimental.vector.splice.nxv2i1(<vscale x 2 x i1> zeroinitializer, <vscale x 2 x i1> zeroinitializer, i32 -1)
+; TYPE_BASED_ONLY-NEXT:  Cost Model: Invalid cost for instruction: %splice_nxv1i1_neg = call <vscale x 1 x i1> @llvm.experimental.vector.splice.nxv1i1(<vscale x 1 x i1> zeroinitializer, <vscale x 1 x i1> zeroinitializer, i32 -1)
 ; TYPE_BASED_ONLY-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 
@@ -509,23 +523,29 @@ define void @vector_splice() #0 {
 ;; negative Index
   %splice_nxv16i8_neg = call <vscale x 16 x i8> @llvm.experimental.vector.splice.nxv16i8(<vscale x 16 x i8> zeroinitializer, <vscale x 16 x i8> zeroinitializer, i32 -1)
   %splice_nxv32i8_neg = call <vscale x 32 x i8> @llvm.experimental.vector.splice.nxv32i8(<vscale x 32 x i8> zeroinitializer, <vscale x 32 x i8> zeroinitializer, i32 -1)
+  %splice_nxv1i16_neg = call <vscale x 1 x i16> @llvm.experimental.vector.splice.nxv1i16(<vscale x 1 x i16> zeroinitializer, <vscale x 1 x i16> zeroinitializer, i32 -1)
   %splice_nxv2i16_neg = call <vscale x 2 x i16> @llvm.experimental.vector.splice.nxv2i16(<vscale x 2 x i16> zeroinitializer, <vscale x 2 x i16> zeroinitializer, i32 -1)
   %splice_nxv4i16_neg = call <vscale x 4 x i16> @llvm.experimental.vector.splice.nxv4i16(<vscale x 4 x i16> zeroinitializer, <vscale x 4 x i16> zeroinitializer, i32 -1)
   %splice_nxv8i16_neg = call <vscale x 8 x i16> @llvm.experimental.vector.splice.nxv8i16(<vscale x 8 x i16> zeroinitializer, <vscale x 8 x i16> zeroinitializer, i32 -1)
   %splice_nxv16i16_neg = call <vscale x 16 x i16> @llvm.experimental.vector.splice.nxv16i16(<vscale x 16 x i16> zeroinitializer, <vscale x 16 x i16> zeroinitializer, i32 -1)
   %splice_nxv4i32_neg = call <vscale x 4 x i32> @llvm.experimental.vector.splice.nxv4i32(<vscale x 4 x i32> zeroinitializer, <vscale x 4 x i32> zeroinitializer, i32 -1)
   %splice_nxv8i32_neg = call <vscale x 8 x i32> @llvm.experimental.vector.splice.nxv8i32(<vscale x 8 x i32> zeroinitializer, <vscale x 8 x i32> zeroinitializer, i32 -1)
+  %splice_nxv1i64_neg= call <vscale x 1 x i64> @llvm.experimental.vector.splice.nxv1i64(<vscale x 1 x i64> zeroinitializer, <vscale x 1 x i64> zeroinitializer, i32 -1)
   %splice_nxv2i64_neg= call <vscale x 2 x i64> @llvm.experimental.vector.splice.nxv2i64(<vscale x 2 x i64> zeroinitializer, <vscale x 2 x i64> zeroinitializer, i32 -1)
   %splice_nxv4i64_neg = call <vscale x 4 x i64> @llvm.experimental.vector.splice.nxv4i64(<vscale x 4 x i64> zeroinitializer, <vscale x 4 x i64> zeroinitializer, i32 -1)
+  %splice_nxv1f16_neg = call <vscale x 1 x half> @llvm.experimental.vector.splice.nxv1f16(<vscale x 1 x half> zeroinitializer, <vscale x 1 x half> zeroinitializer, i32 -1)
   %splice_nxv2f16_neg = call <vscale x 2 x half> @llvm.experimental.vector.splice.nxv2f16(<vscale x 2 x half> zeroinitializer, <vscale x 2 x half> zeroinitializer, i32 -1)
   %splice_nxv4f16_neg = call <vscale x 4 x half> @llvm.experimental.vector.splice.nxv4f16(<vscale x 4 x half> zeroinitializer, <vscale x 4 x half> zeroinitializer, i32 -1)
   %splice_nxv8f16_neg = call <vscale x 8 x half> @llvm.experimental.vector.splice.nxv8f16(<vscale x 8 x half> zeroinitializer, <vscale x 8 x half> zeroinitializer, i32 -1)
   %splice_nxv16f16_neg = call <vscale x 16 x half> @llvm.experimental.vector.splice.nxv16f16(<vscale x 16 x half> zeroinitializer, <vscale x 16 x half> zeroinitializer, i32 -1)
+  %splice_nxv1f32_neg = call <vscale x 1 x float> @llvm.experimental.vector.splice.nxv1f32(<vscale x 1 x float> zeroinitializer, <vscale x 1 x float> zeroinitializer, i32 -1)
   %splice_nxv2f32_neg = call <vscale x 2 x float> @llvm.experimental.vector.splice.nxv2f32(<vscale x 2 x float> zeroinitializer, <vscale x 2 x float> zeroinitializer, i32 -1)
   %splice_nxv4f32_neg = call <vscale x 4 x float> @llvm.experimental.vector.splice.nxv4f32(<vscale x 4 x float> zeroinitializer, <vscale x 4 x float> zeroinitializer, i32 -1)
   %splice_nxv8f32_neg = call <vscale x 8 x float> @llvm.experimental.vector.splice.nxv8f32(<vscale x 8 x float> zeroinitializer, <vscale x 8 x float> zeroinitializer, i32 -1)
+  %splice_nxv1f64_neg = call <vscale x 1 x double> @llvm.experimental.vector.splice.nxv1f64(<vscale x 1 x double> zeroinitializer, <vscale x 1 x double> zeroinitializer, i32 -1)
   %splice_nxv2f64_neg = call <vscale x 2 x double> @llvm.experimental.vector.splice.nxv2f64(<vscale x 2 x double> zeroinitializer, <vscale x 2 x double> zeroinitializer, i32 -1)
   %splice_nxv4f64_neg = call <vscale x 4 x double> @llvm.experimental.vector.splice.nxv4f64(<vscale x 4 x double> zeroinitializer, <vscale x 4 x double> zeroinitializer, i32 -1)
+  %splice_nxv1bf16_neg = call <vscale x 1 x bfloat> @llvm.experimental.vector.splice.nxv1bf16(<vscale x 1 x bfloat> zeroinitializer, <vscale x 1 x bfloat> zeroinitializer, i32 -1)
   %splice_nxv2bf16_neg = call <vscale x 2 x bfloat> @llvm.experimental.vector.splice.nxv2bf16(<vscale x 2 x bfloat> zeroinitializer, <vscale x 2 x bfloat> zeroinitializer, i32 -1)
   %splice_nxv4bf16_neg = call <vscale x 4 x bfloat> @llvm.experimental.vector.splice.nxv4bf16(<vscale x 4 x bfloat> zeroinitializer, <vscale x 4 x bfloat> zeroinitializer, i32 -1)
   %splice_nxv8bf16_neg = call <vscale x 8 x bfloat> @llvm.experimental.vector.splice.nxv8bf16(<vscale x 8 x bfloat> zeroinitializer, <vscale x 8 x bfloat> zeroinitializer, i32 -1)
@@ -534,36 +554,45 @@ define void @vector_splice() #0 {
   %splice_nxv8i1_neg =  call <vscale x 8 x i1> @llvm.experimental.vector.splice.nxv8i1(<vscale x 8 x i1> zeroinitializer, <vscale x 8 x i1> zeroinitializer, i32 -1)
   %splice_nxv4i1_neg = call <vscale x 4 x i1> @llvm.experimental.vector.splice.nxv4i1(<vscale x 4 x i1> zeroinitializer, <vscale x 4 x i1> zeroinitializer, i32 -1)
   %splice_nxv2i1_neg = call <vscale x 2 x i1> @llvm.experimental.vector.splice.nxv2i1(<vscale x 2 x i1> zeroinitializer, <vscale x 2 x i1> zeroinitializer, i32 -1)
+  %splice_nxv1i1_neg = call <vscale x 1 x i1> @llvm.experimental.vector.splice.nxv1i1(<vscale x 1 x i1> zeroinitializer, <vscale x 1 x i1> zeroinitializer, i32 -1)
   ret void
 }
 
+declare <vscale x 1 x i1> @llvm.experimental.vector.splice.nxv1i1(<vscale x 1 x i1>, <vscale x 1 x i1>, i32)
 declare <vscale x 2 x i1> @llvm.experimental.vector.splice.nxv2i1(<vscale x 2 x i1>, <vscale x 2 x i1>, i32)
 declare <vscale x 4 x i1> @llvm.experimental.vector.splice.nxv4i1(<vscale x 4 x i1>, <vscale x 4 x i1>, i32)
 declare <vscale x 8 x i1> @llvm.experimental.vector.splice.nxv8i1(<vscale x 8 x i1>, <vscale x 8 x i1>, i32)
 declare <vscale x 16 x i1> @llvm.experimental.vector.splice.nxv16i1(<vscale x 16 x i1>, <vscale x 16 x i1>, i32)
+declare <vscale x 1 x i8> @llvm.experimental.vector.splice.nxv1i8(<vscale x 1 x i8>, <vscale x 1 x i8>, i32)
 declare <vscale x 2 x i8> @llvm.experimental.vector.splice.nxv2i8(<vscale x 2 x i8>, <vscale x 2 x i8>, i32)
 declare <vscale x 16 x i8> @llvm.experimental.vector.splice.nxv16i8(<vscale x 16 x i8>, <vscale x 16 x i8>, i32)
 declare <vscale x 32 x i8> @llvm.experimental.vector.splice.nxv32i8(<vscale x 32 x i8>, <vscale x 32 x i8>, i32)
+declare <vscale x 1 x i16> @llvm.experimental.vector.splice.nxv1i16(<vscale x 1 x i16>, <vscale x 1 x i16>, i32)
 declare <vscale x 2 x i16> @llvm.experimental.vector.splice.nxv2i16(<vscale x 2 x i16>, <vscale x 2 x i16>, i32)
 declare <vscale x 4 x i16> @llvm.experimental.vector.splice.nxv4i16(<vscale x 4 x i16>, <vscale x 4 x i16>, i32)
 declare <vscale x 8 x i16> @llvm.experimental.vector.splice.nxv8i16(<vscale x 8 x i16>, <vscale x 8 x i16>, i32)
 declare <vscale x 16 x i16> @llvm.experimental.vector.splice.nxv16i16(<vscale x 16 x i16>, <vscale x 16 x i16>, i32)
 declare <vscale x 4 x i32> @llvm.experimental.vector.splice.nxv4i32(<vscale x 4 x i32>, <vscale x 4 x i32>, i32)
 declare <vscale x 8 x i32> @llvm.experimental.vector.splice.nxv8i32(<vscale x 8 x i32>, <vscale x 8 x i32>, i32)
+declare <vscale x 1 x i64> @llvm.experimental.vector.splice.nxv1i64(<vscale x 1 x i64>, <vscale x 1 x i64>, i32)
 declare <vscale x 2 x i64> @llvm.experimental.vector.splice.nxv2i64(<vscale x 2 x i64>, <vscale x 2 x i64>, i32)
 declare <vscale x 4 x i64> @llvm.experimental.vector.splice.nxv4i64(<vscale x 4 x i64>, <vscale x 4 x i64>, i32)
+declare <vscale x 1 x half> @llvm.experimental.vector.splice.nxv1f16(<vscale x 1 x half>, <vscale x 1 x half>, i32)
 declare <vscale x 2 x half> @llvm.experimental.vector.splice.nxv2f16(<vscale x 2 x half>, <vscale x 2 x half>, i32)
 declare <vscale x 4 x half> @llvm.experimental.vector.splice.nxv4f16(<vscale x 4 x half>, <vscale x 4 x half>, i32)
 declare <vscale x 8 x half> @llvm.experimental.vector.splice.nxv8f16(<vscale x 8 x half>, <vscale x 8 x half>, i32)
 declare <vscale x 16 x half> @llvm.experimental.vector.splice.nxv16f16(<vscale x 16 x half>, <vscale x 16 x half>, i32)
+declare <vscale x 1 x bfloat> @llvm.experimental.vector.splice.nxv1bf16(<vscale x 1 x bfloat>, <vscale x 1 x bfloat>, i32)
 declare <vscale x 2 x bfloat> @llvm.experimental.vector.splice.nxv2bf16(<vscale x 2 x bfloat>, <vscale x 2 x bfloat>, i32)
 declare <vscale x 4 x bfloat> @llvm.experimental.vector.splice.nxv4bf16(<vscale x 4 x bfloat>, <vscale x 4 x bfloat>, i32)
 declare <vscale x 8 x bfloat> @llvm.experimental.vector.splice.nxv8bf16(<vscale x 8 x bfloat>, <vscale x 8 x bfloat>, i32)
 declare <vscale x 16 x bfloat> @llvm.experimental.vector.splice.nxv16bf16(<vscale x 16 x bfloat>, <vscale x 16 x bfloat>, i32)
+declare <vscale x 1 x float> @llvm.experimental.vector.splice.nxv1f32(<vscale x 1 x float>, <vscale x 1 x float>, i32)
 declare <vscale x 2 x float> @llvm.experimental.vector.splice.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, i32)
 declare <vscale x 4 x float> @llvm.experimental.vector.splice.nxv4f32(<vscale x 4 x float>, <vscale x 4 x float>, i32)
 declare <vscale x 8 x float> @llvm.experimental.vector.splice.nxv8f32(<vscale x 8 x float>, <vscale x 8 x float>, i32)
 declare <vscale x 16 x float> @llvm.experimental.vector.splice.nxv16f32(<vscale x 16 x float>, <vscale x 16 x float>, i32)
+declare <vscale x 1 x double> @llvm.experimental.vector.splice.nxv1f64(<vscale x 1 x double>, <vscale x 1 x double>, i32)
 declare <vscale x 2 x double> @llvm.experimental.vector.splice.nxv2f64(<vscale x 2 x double>, <vscale x 2 x double>, i32)
 declare <vscale x 4 x double> @llvm.experimental.vector.splice.nxv4f64(<vscale x 4 x double>, <vscale x 4 x double>, i32)