[wasm] Int64Lowering of Word64Ror and Word64Rol.

src/compiler/wasm-compiler.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/compiler/wasm-compiler.h"
 
 #include "src/isolate-inl.h"
 
 #include "src/base/platform/elapsed-timer.h"
 #include "src/base/platform/platform.h"
@@ skipping 531 matching lines @@
       std::swap(left, right);
       break;
     case wasm::kExprI64GtU:
       op = m->Uint64LessThan();
       std::swap(left, right);
       break;
     case wasm::kExprI64GeU:
       op = m->Uint64LessThanOrEqual();
       std::swap(left, right);
       break;
-
-#if WASM_64
-    // Opcodes only supported on 64-bit platforms.
-    // TODO(titzer): query the machine operator builder here instead of #ifdef.
     case wasm::kExprI64Ror:
       op = m->Word64Ror();
       right = MaskShiftCount64(right);
       break;
     case wasm::kExprI64Rol:
-      right = MaskShiftCount64(right);
       return BuildI64Rol(left, right);
-#endif
-
     case wasm::kExprF32CopySign:
       return BuildF32CopySign(left, right);
     case wasm::kExprF64CopySign:
       return BuildF64CopySign(left, right);
     case wasm::kExprF32Add:
       op = m->Float32Add();
       break;
     case wasm::kExprF32Sub:
       op = m->Float32Sub();
       break;
@@ skipping 2229 matching lines @@
         static_cast<int>(function.code_end_offset - function.code_start_offset),
         decode_ms, static_cast<int>(graph.NodeCount()), compile_ms);
   }
   return code;
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8