[StackSwitching] Implementing partial cont.bind-ing (#8464)

Author: kripken

src/wasm-interpreter.h

@@ -4775,9 +4775,9 @@ class ModuleRunnerBase : public ExpressionRunner<SubType> {
     auto old = cont.getSingleValue().getContData();
     auto newData = *old;
     newData.type = curr->type.getHeapType();
-    newData.resumeArguments = arguments;
-    // We handle only the simple case of applying all parameters, for now. TODO
-    assert(old->resumeArguments.empty());
+    for (auto arg : arguments) {
+      newData.resumeArguments.push_back(arg);
+    }
     // The old one is done.
     old->executed = true;
     return Literal(std::make_shared<ContData>(newData));

test/lit/exec/cont_bindings.wast

@@ -0,0 +1,47 @@
+;; NOTE: Assertions have been generated by update_lit_checks.py --output=fuzz-exec and should not be edited.
+
+;; RUN: foreach %s %t wasm-opt -all --fuzz-exec-before -q -o /dev/null 2>&1 | filecheck %s
+
+(module
+ (import "fuzzing-support" "log-i32" (func $log-i32 (param i32)))
+ (import "fuzzing-support" "log-f64" (func $log-f64 (param f64)))
+
+ (rec
+  (type $F1 (func (param i32 f64)))
+  (type $F2 (func (param f64)))
+  (type $F3 (func))
+
+  (type $C1 (cont $F1))
+  (type $C2 (cont $F2))
+  (type $C3 (cont $F3))
+ )
+
+ (func $f1 (type $F1) (param $x i32) (param $y f64)
+  (call $log-i32
+   (local.get $x)
+  )
+  (call $log-f64
+   (local.get $y)
+  )
+ )
+
+ ;; CHECK:      [fuzz-exec] calling bindings
+ ;; CHECK-NEXT: [LoggingExternalInterface logging 42]
+ ;; CHECK-NEXT: [LoggingExternalInterface logging 3.14159]
+ (func $bindings (export "bindings")
+  ;; Start with an $F1 with two params, then bind each param in successive
+  ;; operations.
+  (resume $C3
+   (cont.bind $C2 $C3
+    (f64.const 3.14159)
+    (cont.bind $C1 $C2
+     (i32.const 42)
+     (cont.new $C1
+      (ref.func $f1)
+     )
+    )
+   )
+  )
+ )
+)
+