Add WASM code gen for return instruction

2 files changed, 25 insertions, 2 deletions

diff --git a/src/test/java/org/shedlang/compiler/backends/wasm/WasmCodeGenPushUnitTests.java b/src/test/java/org/shedlang/compiler/backends/wasm/WasmCodeGenPushUnitTests.java
index 919f57f8..ed9f3221 100644
--- a/src/test/java/org/shedlang/compiler/backends/wasm/WasmCodeGenPushUnitTests.java
+++ b/src/test/java/org/shedlang/compiler/backends/wasm/WasmCodeGenPushUnitTests.java
@@ -12,8 +12,6 @@ import static org.shedlang.compiler.backends.wasm.structure.WasmObjdump.objdump;
 
 @ExtendWith({SnapshotResolver.class})
 public class WasmCodeGenPushUnitTests {
-    // TODO: handle larger ints
-
     @Test
     public void pushIntIsCompiledToOperandInStack(Snapshotter snapshotter) throws IOException, InterruptedException {
         var instruction = Instructions.pushUnit();
diff --git a/src/test/java/org/shedlang/compiler/backends/wasm/WasmCodeGenReturnTests.java b/src/test/java/org/shedlang/compiler/backends/wasm/WasmCodeGenReturnTests.java
new file mode 100644
index 00000000..01c26402
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/backends/wasm/WasmCodeGenReturnTests.java
@@ -0,0 +1,25 @@
+package org.shedlang.compiler.backends.wasm;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.shedlang.compiler.stackir.instructions.Instructions;
+import org.shedlang.compiler.testing.snapshots.SnapshotResolver;
+import org.shedlang.compiler.testing.snapshots.Snapshotter;
+
+import java.io.IOException;
+
+import static org.shedlang.compiler.backends.wasm.structure.WasmObjdump.objdump;
+
+@ExtendWith({SnapshotResolver.class})
+public class WasmCodeGenReturnTests {
+    @Test
+    public void returnCompilesToReturnInstruction(Snapshotter snapshotter) throws IOException, InterruptedException {
+        var instruction = Instructions.return_();
+        var context = WasmCodeGenContext.EMPTY;
+
+        var result = WasmCodeGen.generateInstruction(instruction, context);
+
+        var module = result.toFunction().toModule();
+        snapshotter.assertSnapshot(objdump(module));
+    }
+}