diff --git a/src/arch/sparc64/CodeGen.zig b/src/arch/sparc64/CodeGen.zig
index 673428c91a..4adbfdebc9 100644
--- a/src/arch/sparc64/CodeGen.zig
+++ b/src/arch/sparc64/CodeGen.zig
@@ -672,7 +672,7 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
             .unwrap_errunion_payload    => try self.airUnwrapErrPayload(inst),
             .unwrap_errunion_err_ptr    => @panic("TODO try self.airUnwrapErrErrPtr(inst)"),
             .unwrap_errunion_payload_ptr=> @panic("TODO try self.airUnwrapErrPayloadPtr(inst)"),
-            .errunion_payload_ptr_set   => @panic("TODO try self.airErrUnionPayloadPtrSet(inst)"),
+            .errunion_payload_ptr_set   => try self.airErrUnionPayloadPtrSet(inst),
             .err_return_trace           => @panic("TODO try self.airErrReturnTrace(inst)"),
             .set_err_return_trace       => @panic("TODO try self.airSetErrReturnTrace(inst)"),
 
@@ -1462,6 +1462,12 @@ fn airDiv(self: *Self, inst: Air.Inst.Index) !void {
     return self.finishAir(inst, result, .{ bin_op.lhs, bin_op.rhs, .none });
 }
 
+fn airErrUnionPayloadPtrSet(self: *Self, inst: Air.Inst.Index) !void {
+    const ty_op = self.air.instructions.items(.data)[inst].ty_op;
+    const result: MCValue = if (self.liveness.isUnused(inst)) .dead else return self.fail("TODO implement .errunion_payload_ptr_set for {}", .{self.target.cpu.arch});
+    return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
+}
+
 fn airFence(self: *Self, inst: Air.Inst.Index) !void {
     // TODO weaken this as needed, currently this implements the strongest membar form
     const fence = self.air.instructions.items(.data)[inst].fence;