GC: Add stubs for the remaining instructions (#3174)

NFC, except adding most of the boilerplate for the remaining GC instructions. Each implementation site is marked with a respective `TODO (gc): theInstruction` in between the typical boilerplate code.

1 files changed, 104 insertions, 0 deletions

diff --git a/src/passes/Print.cpp b/src/passes/Print.cpp
index ac115edc3..a8e5b0f9c 100644
--- a/src/passes/Print.cpp
+++ b/src/passes/Print.cpp
@@ -1478,6 +1478,50 @@ struct PrintExpressionContents
   void visitI31Get(I31Get* curr) {
     printMedium(o, curr->signed_ ? "i31.get_s" : "i31.get_u");
   }
+  void visitRefTest(RefTest* curr) {
+    printMedium(o, "ref.test");
+    WASM_UNREACHABLE("TODO (gc): ref.test");
+  }
+  void visitRefCast(RefCast* curr) {
+    printMedium(o, "ref.cast");
+    WASM_UNREACHABLE("TODO (gc): ref.cast");
+  }
+  void visitBrOnCast(BrOnCast* curr) {
+    printMedium(o, "br_on_cast");
+    WASM_UNREACHABLE("TODO (gc): br_on_cast");
+  }
+  void visitRttCanon(RttCanon* curr) {
+    printMedium(o, "rtt.canon");
+    WASM_UNREACHABLE("TODO (gc): rtt.canon");
+  }
+  void visitRttSub(RttSub* curr) {
+    printMedium(o, "rtt.sub");
+    WASM_UNREACHABLE("TODO (gc): rtt.sub");
+  }
+  void visitStructNew(StructNew* curr) {
+    WASM_UNREACHABLE("TODO (gc): struct.new");
+  }
+  void visitStructGet(StructGet* curr) {
+    WASM_UNREACHABLE("TODO (gc): struct.get");
+  }
+  void visitStructSet(StructSet* curr) {
+    printMedium(o, "struct.set");
+    WASM_UNREACHABLE("TODO (gc): struct.set");
+  }
+  void visitArrayNew(ArrayNew* curr) {
+    WASM_UNREACHABLE("TODO (gc): array.new");
+  }
+  void visitArrayGet(ArrayGet* curr) {
+    WASM_UNREACHABLE("TODO (gc): array.get");
+  }
+  void visitArraySet(ArraySet* curr) {
+    printMedium(o, "array.set");
+    WASM_UNREACHABLE("TODO (gc): array.set");
+  }
+  void visitArrayLen(ArrayLen* curr) {
+    printMedium(o, "array.len");
+    WASM_UNREACHABLE("TODO (gc): array.len");
+  }
 };
 
 // Prints an expression in s-expr format, including both the
@@ -2081,6 +2125,66 @@ struct PrintSExpression : public OverriddenVisitor<PrintSExpression> {
     printFullLine(curr->i31);
     decIndent();
   }
+  void visitRefTest(RefTest* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): ref.test");
+  }
+  void visitRefCast(RefCast* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): ref.cast");
+  }
+  void visitBrOnCast(BrOnCast* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): br_on_cast");
+  }
+  void visitRttCanon(RttCanon* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): rtt.canon");
+  }
+  void visitRttSub(RttSub* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): rtt.sub");
+  }
+  void visitStructNew(StructNew* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): struct.new");
+  }
+  void visitStructGet(StructGet* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): struct.get");
+  }
+  void visitStructSet(StructSet* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): struct.set");
+  }
+  void visitArrayNew(ArrayNew* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): array.new");
+  }
+  void visitArrayGet(ArrayGet* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): array.get");
+  }
+  void visitArraySet(ArraySet* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): array.set");
+  }
+  void visitArrayLen(ArrayLen* curr) {
+    o << '(';
+    PrintExpressionContents(currFunction, o).visit(curr);
+    WASM_UNREACHABLE("TODO (gc): array.len");
+  }
   // Module-level visitors
   void handleSignature(Signature curr, Name* funcName = nullptr) {
     o << "(func";