diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -1233,11 +1233,18 @@
       { TTI::SK_PermuteSingleSrc, MVT::v2f32, 1 }, // mov.
       { TTI::SK_PermuteSingleSrc, MVT::v4f32, 3 }, // perfectshuffle worst case.
       { TTI::SK_PermuteSingleSrc, MVT::v2f64, 1 }, // mov.
+      // Broadcast shuffle kinds for scalable vectors
+      { TTI::SK_Broadcast, MVT::nxv16i8, 1 },
+      { TTI::SK_Broadcast, MVT::nxv8i16, 1 },
+      { TTI::SK_Broadcast, MVT::nxv4i32, 1 },
+      { TTI::SK_Broadcast, MVT::nxv2i64, 1 },
+      { TTI::SK_Broadcast, MVT::nxv8f16, 1 },
+      { TTI::SK_Broadcast, MVT::nxv4f32, 1 },
+      { TTI::SK_Broadcast, MVT::nxv2f64, 1 },
     };
     std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Tp);
     if (const auto *Entry = CostTableLookup(ShuffleTbl, Kind, LT.second))
       return LT.first * Entry->Cost;
   }
-
   return BaseT::getShuffleCost(Kind, Tp, Index, SubTp);
 }
diff --git a/llvm/test/Analysis/CostModel/AArch64/sve-shuffle-broadcast.ll b/llvm/test/Analysis/CostModel/AArch64/sve-shuffle-broadcast.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/AArch64/sve-shuffle-broadcast.ll
@@ -0,0 +1,134 @@
+; Check getShuffleCost for SK_BroadCast with scalable vector
+
+; RUN: opt -cost-model -analyze -mtriple=aarch64--linux-gnu -mattr=sve  < %s 2>%t | FileCheck %s
+
+; RUN: FileCheck --check-prefix=WARN --allow-empty %s <%t
+
+; If this check fails please read test/CodeGen/AArch64/README for instructions on how to resolve it.
+; WARN-NOT: warning
+
+
+define <vscale x 16 x i8> @broadcast_v16i8(<vscale x 16 x i8> %v) {
+; CHECK-LABEL: 'broadcast_v16i8':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction:   %retval = shufflevector <vscale x 16 x i8> %v, <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 16 x i8> %retval
+
+  %retval = shufflevector <vscale x 16 x i8> %v, <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer
+  ret <vscale x 16 x i8> %retval
+}
+
+define <vscale x 32 x i8> @broadcast_v32i8(<vscale x 32 x i8> %v) {
+; CHECK-LABEL: 'broadcast_v32i8':
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction:   %retval = shufflevector <vscale x 32 x i8> %v, <vscale x 32 x i8> poison, <vscale x 32 x i32> zeroinitializer
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 32 x i8> %retval
+
+  %retval = shufflevector <vscale x 32 x i8> %v, <vscale x 32 x i8> poison, <vscale x 32 x i32> zeroinitializer
+  ret <vscale x 32 x i8> %retval
+}
+
+define <vscale x 8 x i16> @broadcast_v8i16(<vscale x 8 x i16> %v) {
+; CHECK-LABEL: 'broadcast_v8i16':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction:   %retval = shufflevector <vscale x 8 x i16> %v, <vscale x 8 x i16> poison, <vscale x 8 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 8 x i16> %retval
+
+  %retval = shufflevector <vscale x 8 x i16> %v, <vscale x 8 x i16> poison, <vscale x 8 x i32> zeroinitializer
+  ret <vscale x 8 x i16> %retval
+}
+
+define <vscale x 16 x i16> @broadcast_v16i16(<vscale x 16 x i16> %v) {
+; CHECK-LABEL: 'broadcast_v16i16':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction:   %retval = shufflevector <vscale x 16 x i16> %v, <vscale x 16 x i16> poison, <vscale x 16 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 16 x i16> %retval
+
+  %retval = shufflevector <vscale x 16 x i16> %v, <vscale x 16 x i16> poison, <vscale x 16 x i32> zeroinitializer
+  ret <vscale x 16 x i16> %retval
+}
+
+define <vscale x 4 x i32> @broadcast_v4i32(<vscale x 4 x i32> %v) {
+; CHECK-LABEL: 'broadcast_v4i32':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction:   %retval = shufflevector <vscale x 4 x i32> %v, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 4 x i32> %retval
+
+  %retval = shufflevector <vscale x 4 x i32> %v, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
+  ret <vscale x 4 x i32> %retval
+}
+
+define <vscale x 8 x i32> @broadcast_v8i32(<vscale x 8 x i32> %v) {
+; CHECK-LABEL: 'broadcast_v8i32':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction:   %retval = shufflevector <vscale x 8 x i32> %v, <vscale x 8 x i32> poison, <vscale x 8 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 8 x i32> %retval
+
+  %retval = shufflevector <vscale x 8 x i32> %v, <vscale x 8 x i32> poison, <vscale x 8 x i32> zeroinitializer
+  ret <vscale x 8 x i32> %retval
+}
+
+define <vscale x 2 x i64> @broadcast_v2i64(<vscale x 2 x i64> %v) {
+; CHECK-LABEL: 'broadcast_v2i64':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction:   %retval = shufflevector <vscale x 2 x i64> %v, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 2 x i64> %retval
+
+  %retval = shufflevector <vscale x 2 x i64> %v, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  ret <vscale x 2 x i64> %retval
+}
+
+define <vscale x 4 x i64> @broadcast_v4i64(<vscale x 4 x i64> %v) {
+; CHECK-LABEL: 'broadcast_v4i64':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction:   %retval = shufflevector <vscale x 4 x i64> %v, <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 4 x i64> %retval
+
+  %retval = shufflevector <vscale x 4 x i64> %v, <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer
+  ret <vscale x 4 x i64> %retval
+}
+
+define <vscale x 8 x half> @broadcast_v8f16(<vscale x 8 x half> %v) {
+; CHECK-LABEL: 'broadcast_v8f16':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction:   %retval = shufflevector <vscale x 8 x half> %v, <vscale x 8 x half> poison, <vscale x 8 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 8 x half> %retval
+
+  %retval = shufflevector <vscale x 8 x half> %v, <vscale x 8 x half> poison, <vscale x 8 x i32> zeroinitializer
+  ret <vscale x 8 x half> %retval
+}
+
+define <vscale x 16 x half> @broadcast_v16f16(<vscale x 16 x half> %v) {
+; CHECK-LABEL: 'broadcast_v16f16':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction:   %retval = shufflevector <vscale x 16 x half> %v, <vscale x 16 x half> poison, <vscale x 16 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 16 x half> %retval
+
+  %retval = shufflevector <vscale x 16 x half> %v, <vscale x 16 x half> poison, <vscale x 16 x i32> zeroinitializer
+  ret <vscale x 16 x half> %retval
+}
+
+define <vscale x 4 x float> @slapt_v4f32(<vscale x 4 x float> %v){
+; CHECK-LABEL: 'slapt_v4f32':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction:   %retval = shufflevector <vscale x 4 x float> %v, <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 4 x float> %retval
+
+   %retval = shufflevector <vscale x 4 x float> %v, <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
+  ret <vscale x 4 x float> %retval
+}
+
+define <vscale x 8 x float> @slapt_v8f32(<vscale x 8 x float> %v){
+; CHECK-LABEL: 'slapt_v8f32':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction:   %retval = shufflevector <vscale x 8 x float> %v, <vscale x 8 x float> poison, <vscale x 8 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 8 x float> %retval
+
+   %retval = shufflevector <vscale x 8 x float> %v, <vscale x 8 x float> poison, <vscale x 8 x i32> zeroinitializer
+  ret <vscale x 8 x float> %retval
+}
+define <vscale x 2 x double> @slapt_v2f64(<vscale x 2 x double> %v){
+; CHECK-LABEL: 'slapt_v2f64':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction:   %retval = shufflevector <vscale x 2 x double> %v, <vscale x 2 x double> poison, <vscale x 2 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 2 x double> %retval
+
+   %retval = shufflevector <vscale x 2 x double> %v, <vscale x 2 x double> poison, <vscale x 2 x i32> zeroinitializer
+  ret <vscale x 2 x double> %retval
+}
+
+define <vscale x 4 x double> @slapt_v4f64(<vscale x 4 x double> %v){
+; CHECK-LABEL: 'slapt_v4f64':
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction:   %retval = shufflevector <vscale x 4 x double> %v, <vscale x 4 x double> poison, <vscale x 4 x i32> zeroinitializer
+; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction:   ret <vscale x 4 x double> %retval
+
+   %retval = shufflevector <vscale x 4 x double> %v, <vscale x 4 x double> poison, <vscale x 4 x i32> zeroinitializer
+  ret <vscale x 4 x double> %retval
+}