Correctly clear memory / table info in clearModule (#2536)

Currently `ModuleUtils::clearModule` does not clear `exists` flags in
the memory and table, and running RoundTrip pass on any module that has
a memory or a table fails as a result. This creates `clear` function in
`Memory` and `Table` and makes `clearModule` call them.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/wasm.h b/src/wasm.h
index cc2070eb2..0ed4f27bd 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -1241,6 +1241,13 @@ public:
 
   Table() { name = Name::fromInt(0); }
   bool hasMax() { return max != kUnlimitedSize; }
+  void clear() {
+    exists = false;
+    name = "";
+    initial = 0;
+    max = kMaxSize;
+    segments.clear();
+  }
 };
 
 class Memory : public Importable {
@@ -1284,6 +1291,14 @@ public:
 
   Memory() { name = Name::fromInt(0); }
   bool hasMax() { return max != kUnlimitedSize; }
+  void clear() {
+    exists = false;
+    name = "";
+    initial = 0;
+    max = kMaxSize;
+    segments.clear();
+    shared = false;
+  }
 };
 
 class Global : public Importable {