[wasm] Experimental: Add support for multiple non-homogeneous tables

src/wasm/ast-decoder.h

Index: src/wasm/ast-decoder.h
diff --git a/src/wasm/ast-decoder.h b/src/wasm/ast-decoder.h
index c4f6c1679a0bfb89d6d1b9c9c9197305e25aeca2..c76ce6bc70f83b1726f26ada368b1a35f7a46cc4 100644
--- a/src/wasm/ast-decoder.h
+++ b/src/wasm/ast-decoder.h
@@ -105,16 +105,23 @@ struct BreakDepthOperand {
 
 struct CallIndirectOperand {
   uint32_t arity;
-  uint32_t index;
+  uint32_t sig_index;
   FunctionSig* sig;
+  uint32_t table_index;
+  FunctionSig* table;
   unsigned length;
   inline CallIndirectOperand(Decoder* decoder, const byte* pc) {
     unsigned len1 = 0;
     unsigned len2 = 0;
+    unsigned len3 = 0;
     arity = decoder->checked_read_u32v(pc, 1, &len1, "argument count");
-    index = decoder->checked_read_u32v(pc, 1 + len1, &len2, "signature index");
-    length = len1 + len2;
+    sig_index =
+        decoder->checked_read_u32v(pc, 1 + len1, &len2, "signature index");
+    table_index =
+        decoder->checked_read_u32v(pc, 1 + len1 + len2, &len3, "table index");
+    length = len1 + len2 + len3;
     sig = nullptr;
+    table = nullptr;
   }
 };