1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
index 34d93ecafce..890e4b8e4e2 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
@@ -41,3 +41,19 @@ SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemmove(
                                  IsVolatile, false, DstPtrInfo,
                                  SrcPtrInfo);
 }
+
+SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemset(
+    SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst, SDValue Val,
+    SDValue Size, unsigned Align, bool IsVolatile,
+    MachinePointerInfo DstPtrInfo) const {
+  if (!DAG.getMachineFunction()
+           .getSubtarget<WebAssemblySubtarget>()
+           .hasBulkMemory())
+    return SDValue();
+
+  SDValue MemIdx = DAG.getConstant(0, DL, MVT::i32);
+  // Only low byte matters for val argument, so anyext the i8
+  return DAG.getNode(WebAssemblyISD::MEMORY_FILL, DL, MVT::Other, Chain, MemIdx,
+                     Dst, DAG.getAnyExtOrTrunc(Val, DL, MVT::i32),
+                     DAG.getZExtOrTrunc(Size, DL, MVT::i32));
+}