[turbofan] Add the RoundInt32ToFloat32 operator to turbofan.

src/compiler/arm64/instruction-scheduler-arm64.cc

 // Copyright 2014 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/instruction-scheduler.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 94 matching lines @@
     case kArm64Float32RoundTruncate:
     case kArm64Float32RoundUp:
     case kArm64Float32ToFloat64:
     case kArm64Float64ToFloat32:
     case kArm64Float64ToInt32:
     case kArm64Float64ToUint32:
     case kArm64Float32ToInt64:
     case kArm64Float64ToInt64:
     case kArm64Float32ToUint64:
     case kArm64Float64ToUint64:
+    case kArm64Int32ToFloat32:
     case kArm64Int32ToFloat64:
     case kArm64Int64ToFloat32:
     case kArm64Int64ToFloat64:
     case kArm64Uint32ToFloat64:
     case kArm64Uint64ToFloat32:
     case kArm64Uint64ToFloat64:
     case kArm64Float64ExtractLowWord32:
     case kArm64Float64ExtractHighWord32:
     case kArm64Float64InsertLowWord32:
     case kArm64Float64InsertHighWord32:
@@ skipping 90 matching lines @@
       return 5;
 
     default:
       return 1;
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8