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

src/compiler/machine-operator.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/machine-operator.h"
 
 #include "src/base/lazy-instance.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator.h"
 
@@ skipping 55 matching lines @@
 
 #define PURE_OP_LIST(V)                                                       \
   V(Word32And, Operator::kAssociative | Operator::kCommutative, 2, 0, 1)      \
   V(Word32Or, Operator::kAssociative | Operator::kCommutative, 2, 0, 1)       \
   V(Word32Xor, Operator::kAssociative | Operator::kCommutative, 2, 0, 1)      \
   V(Word32Shl, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word32Shr, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word32Sar, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word32Ror, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word32Equal, Operator::kCommutative, 2, 0, 1)                             \
+  V(Word32Clz, Operator::kNoProperties, 1, 0, 1)                              \
   V(Word64And, Operator::kAssociative | Operator::kCommutative, 2, 0, 1)      \
   V(Word64Or, Operator::kAssociative | Operator::kCommutative, 2, 0, 1)       \
   V(Word64Xor, Operator::kAssociative | Operator::kCommutative, 2, 0, 1)      \
   V(Word64Shl, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word64Shr, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word64Sar, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word64Ror, Operator::kNoProperties, 2, 0, 1)                              \
   V(Word64Equal, Operator::kCommutative, 2, 0, 1)                             \
   V(Int32Add, Operator::kAssociative | Operator::kCommutative, 2, 0, 1)       \
   V(Int32AddWithOverflow, Operator::kAssociative | Operator::kCommutative, 2, \
@@ skipping 229 matching lines @@
   }
   // Uncached.
   return new (zone_) Operator1<CheckedStoreRepresentation>(
       IrOpcode::kCheckedStore, Operator::kNoRead | Operator::kNoThrow,
       "CheckedStore", 4, 1, 1, 0, 1, 0, rep);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8