[turbofan] Turn Math.clz32 into an inlinable builtin.

src/compiler/verifier.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/verifier.h"
 
 #include <algorithm>
 #include <deque>
 #include <queue>
 #include <sstream>
@@ skipping 733 matching lines @@
     case IrOpcode::kLoad:
     case IrOpcode::kStore:
     case IrOpcode::kWord32And:
     case IrOpcode::kWord32Or:
     case IrOpcode::kWord32Xor:
     case IrOpcode::kWord32Shl:
     case IrOpcode::kWord32Shr:
     case IrOpcode::kWord32Sar:
     case IrOpcode::kWord32Ror:
     case IrOpcode::kWord32Equal:
+    case IrOpcode::kWord32Clz:
     case IrOpcode::kWord64And:
     case IrOpcode::kWord64Or:
     case IrOpcode::kWord64Xor:
     case IrOpcode::kWord64Shl:
     case IrOpcode::kWord64Shr:
     case IrOpcode::kWord64Sar:
     case IrOpcode::kWord64Ror:
     case IrOpcode::kWord64Equal:
     case IrOpcode::kInt32Add:
     case IrOpcode::kInt32AddWithOverflow:
@@ skipping 312 matching lines @@
     // Check inputs for all nodes in the block.
     for (size_t i = 0; i < block->NodeCount(); i++) {
       Node* node = block->NodeAt(i);
       CheckInputsDominate(schedule, block, node, static_cast<int>(i) - 1);
     }
   }
 }
 }
 }
 }  // namespace v8::internal::compiler