Allow bitwise-or aside from type annotations in asm->wasm conversion.

src/wasm/asm-wasm-builder.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/wasm/asm-wasm-builder.h"
 #include "src/wasm/wasm-macro-gen.h"
 #include "src/wasm/wasm-opcodes.h"
 
@@ skipping 856 matching lines @@
     return false;
   }
 
   enum ConvertOperation { kNone, kAsIs, kToInt, kToDouble };
 
   ConvertOperation MatchOr(BinaryOperation* expr) {
     if (MatchIntBinaryOperation(expr, Token::BIT_OR, 0) &&
         (TypeOf(expr->left()) == kAstI32)) {
       return kAsIs;
     } else {
-      UNREACHABLE();
       return kNone;
     }
   }
 
   ConvertOperation MatchShr(BinaryOperation* expr) {
     if (MatchIntBinaryOperation(expr, Token::SHR, 0)) {
       // TODO(titzer): this probably needs to be kToUint
       return (TypeOf(expr->left()) == kAstI32) ? kAsIs : kToInt;
     } else {
       return kNone;
@@ skipping 397 matching lines @@
 // that zone in constructor may be thrown away once wasm module is written.
 WasmModuleIndex* AsmWasmBuilder::Run() {
   AsmWasmBuilderImpl impl(isolate_, zone_, literal_, foreign_);
   impl.Compile();
   WasmModuleWriter* writer = impl.builder_->Build(zone_);
   return writer->WriteTo(zone_);
 }
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8