[WASM] Eliminate SIMD boolean vector types.

src/wasm/module-decoder.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/wasm/module-decoder.h"
 #include "src/wasm/function-body-decoder-impl.h"
 
 #include "src/base/functional.h"
 #include "src/base/platform/platform.h"
 #include "src/counters.h"
@@ skipping 1150 matching lines @@
         return kWasmI64;
       case kLocalF32:
         return kWasmF32;
       case kLocalF64:
         return kWasmF64;
       default:
         if (origin_ != kAsmJsOrigin && FLAG_experimental_wasm_simd) {
           switch (t) {
             case kLocalS128:
               return kWasmS128;
-            case kLocalS1x4:
-              return kWasmS1x4;
-            case kLocalS1x8:
-              return kWasmS1x8;
-            case kLocalS1x16:
-              return kWasmS1x16;
             default:
               break;
           }
         }
         error(pc_ - 1, "invalid local type");
         return kWasmStmt;
     }
   }
 
   // Parses a type entry, which is currently limited to functions only.
@@ skipping 225 matching lines @@
     result.push_back({section_start, name_offset, name_length, payload_offset,
                       payload_length, section_length});
   }
 
   return result;
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8