stack pop example

Author: butterunderflow

benchmarks/wasm/staged/pop.wat

@@ -0,0 +1,8 @@
+(module $push-drop
+  (global (;0;) (mut i32) (i32.const 1048576))
+  (func (;0;) (type 1) (result)
+    i32.const 2
+    i32.const 2
+    i32.add
+  )
+  (start 0))

src/main/scala/wasm/StagedMiniWasm.scala

@@ -442,6 +442,8 @@ trait StagedWasmScalaGen extends ScalaGenBase with SAICodeGenBase {
       emit("Stack.push("); shallow(value); emit(")\n")
     case Node(_, "stack-drop", List(n), _) =>
       emit("Stack.drop("); shallow(n); emit(")\n")
+    case Node(_, "stack-pop", _, _) =>
+      emit("Stack.pop()\n")
     case Node(_, "stack-reset", List(n), _) =>
       emit("Stack.reset("); shallow(n); emit(")\n")
     case Node(_, "stack-init", _, _) =>
@@ -465,8 +467,6 @@ trait StagedWasmScalaGen extends ScalaGenBase with SAICodeGenBase {
   override def shallow(n: Node): Unit = n match {
     case Node(_, "frame-get", List(i), _) =>
       emit("Frames.get("); shallow(i); emit(")")
-    case Node(_, "stack-pop", _, _) =>
-      emit("Stack.pop()")
     case Node(_, "frame-pop", _, _) =>
       emit("Frames.popFrame()")
     case Node(_, "stack-peek", _, _) =>

src/test/scala/genwasym/TestStagedEval.scala

@@ -20,6 +20,10 @@ class TestStagedEval extends FunSuite {
     testFileToScala("./benchmarks/wasm/staged/brtable.wat")
   }
 
+  test("drop-scala") {
+    testFileToScala("./benchmarks/wasm/staged/pop.wat")
+  }
+
   def testFileToCpp(filename: String, main: Option[String] = None, printRes: Boolean = false) = {
     val moduleInst = ModuleInstance(Parser.parseFile(filename))
     val code = WasmToCppCompiler(moduleInst, main, true)