[EH] Add TryTable to StripEH (WebAssembly#7020)

Author: kripken

src/passes/StripEH.cpp

@@ -51,6 +51,11 @@ struct StripEHImpl : public WalkerPass<PostWalker<StripEHImpl>> {
     refinalize = true;
   }
 
+  void visitTryTable(TryTable* curr) {
+    replaceCurrent(curr->body);
+    refinalize = true;
+  }
+
   void visitFunction(Function* curr) {
     if (refinalize) {
       ReFinalize().walkFunctionInModule(curr, getModule());

test/lit/passes/strip-eh.wast

@@ -0,0 +1,35 @@
+;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
+;; RUN: wasm-opt %s -all --strip-eh -S -o - | filecheck %s
+
+;; Remove all EH instructions and tags. Converts 'throw's into 'unreachable's.
+
+(module
+  (tag $e-i32 (param i32))
+  (tag $e-f32 (param f32))
+
+  ;; CHECK:      (func $throw-i32 (type $0)
+  ;; CHECK-NEXT:  (unreachable)
+  ;; CHECK-NEXT: )
+  (func $throw-i32
+    (throw $e-i32 (i32.const 0))
+  )
+  ;; CHECK:      (func $throw-f32 (type $0)
+  ;; CHECK-NEXT:  (unreachable)
+  ;; CHECK-NEXT: )
+  (func $throw-f32
+    (throw $e-f32 (f32.const 0.0))
+  )
+
+  ;; CHECK:      (func $try-catch (type $0)
+  ;; CHECK-NEXT:  (block $out
+  ;; CHECK-NEXT:   (call $throw-f32)
+  ;; CHECK-NEXT:  )
+  ;; CHECK-NEXT: )
+  (func $try-catch
+    (block $out
+      (try_table (catch_all $out)
+        (call $throw-f32)
+      )
+    )
+  )
+)