Extend JSBuiltinReducer to cover Math.abs as well.

src/compiler/graph-unittest.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/graph-unittest.h"
 
 #include <ostream>  // NOLINT(readability/streams)
 
 #include "src/compiler/node-properties-inl.h"
 
@@ skipping 726 matching lines @@
 }
 
 
 #define IS_BINOP_MATCHER(Name)                                            \
   Matcher<Node*> Is##Name(const Matcher<Node*>& lhs_matcher,              \
                           const Matcher<Node*>& rhs_matcher) {            \
     return MakeMatcher(                                                   \
         new IsBinopMatcher(IrOpcode::k##Name, lhs_matcher, rhs_matcher)); \
   }
 IS_BINOP_MATCHER(NumberLessThan)
+IS_BINOP_MATCHER(NumberSubtract)
 IS_BINOP_MATCHER(Word32And)
 IS_BINOP_MATCHER(Word32Sar)
 IS_BINOP_MATCHER(Word32Shl)
 IS_BINOP_MATCHER(Word32Ror)
 IS_BINOP_MATCHER(Word32Equal)
 IS_BINOP_MATCHER(Word64And)
 IS_BINOP_MATCHER(Word64Sar)
 IS_BINOP_MATCHER(Word64Shl)
 IS_BINOP_MATCHER(Word64Equal)
 IS_BINOP_MATCHER(Int32AddWithOverflow)
@@ skipping 14 matching lines @@
 IS_UNOP_MATCHER(ChangeUint32ToUint64)
 IS_UNOP_MATCHER(TruncateFloat64ToFloat32)
 IS_UNOP_MATCHER(TruncateFloat64ToInt32)
 IS_UNOP_MATCHER(TruncateInt64ToInt32)
 IS_UNOP_MATCHER(Float64Sqrt)
 #undef IS_UNOP_MATCHER
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8