diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 3e1be05d556c1935a6e4ef730d6f9e53691b3203..bf754c975b2d86c69376a255b8484a6407b19be6 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -2315,6 +2315,7 @@ pub const FuncGen = struct {
                 .wrap_errunion_err     => try self.airWrapErrUnionErr(inst),
 
                 .wasm_memory_size => try self.airWasmMemorySize(inst),
+                .wasm_memory_grow => try self.airWasmMemoryGrow(inst),
 
                 .constant => unreachable,
                 .const_ty => unreachable,
diff --git a/test/behavior.zig b/test/behavior.zig
index 7be45e638c8103829fabd8afd52fa9f480094483..7cbbf96d172e1893c2a8be4114f05fa5c35622cd 100644
--- a/test/behavior.zig
+++ b/test/behavior.zig
@@ -96,6 +96,10 @@ test {
     _ = @import("behavior/void.zig");
     _ = @import("behavior/while.zig");
 
+    if (builtin.zig_backend == .stage2_wasm) {
+        _ = @import("behavior/wasm.zig");
+    }
+
     if (builtin.zig_backend != .stage1) {
         _ = @import("behavior/decltest.zig");
     }
diff --git a/test/behavior/wasm.zig b/test/behavior/wasm.zig
index 21902955144acb71be3578581f54013d9bd90b7d..ca8a0892ddaa25fc090516d6f2c203546f1f9879 100644
--- a/test/behavior/wasm.zig
+++ b/test/behavior/wasm.zig
@@ -1,7 +1,10 @@
 const std = @import("std");
 const expect = std.testing.expect;
+const builtin = @import("builtin");
 
 test "memory size and grow" {
+    if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
+
     var prev = @wasmMemorySize(0);
     try expect(prev == @wasmMemoryGrow(0, 1));
     try expect(prev + 1 == @wasmMemorySize(0));