From ef9cf86eb0ded6f5460f5870bcb90530a7411a60 Mon Sep 17 00:00:00 2001
From: Alex Bradbury <asb@igalia.com>
Date: Tue, 22 Mar 2022 16:24:05 +0000
Subject: [PATCH] [WebAssembly][NFC] Delete type checking logic for removed
 ref.null instruction

D114979 changed the textual formal of ref.null - dropping ref.null in
favour of ref.null_extern and ref.null_func. Therefore, the type checker
no longer needs logic to handle "ref.null".

Differential Revision: https://reviews.llvm.org/D122123
---
 .../Target/WebAssembly/AsmParser/WebAssemblyAsmTypeCheck.cpp   | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmTypeCheck.cpp b/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmTypeCheck.cpp
index d9f96d9a6419..fedc61100fc3 100644
--- a/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmTypeCheck.cpp
+++ b/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmTypeCheck.cpp
@@ -303,9 +303,6 @@ bool WebAssemblyAsmTypeCheck::typeCheck(SMLoc ErrorLoc, const MCInst &Inst) {
     // catch instruction pushes values whose types are specified in the tag's
     // "params" part
     Stack.insert(Stack.end(), Sig->Params.begin(), Sig->Params.end());
-  } else if (Name == "ref.null") {
-    auto VT = static_cast<wasm::ValType>(Inst.getOperand(0).getImm());
-    Stack.push_back(VT);
   } else if (Name == "unreachable") {
     Unreachable = true;
   } else {