compiler-util.h

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// Copyright 2012 Cloudera Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


#ifndef IMPALA_COMMON_COMPILER_UTIL_H
#define IMPALA_COMMON_COMPILER_UTIL_H

#ifdef LIKELY 
#undef LIKELY
#endif

#ifdef UNLIKELY 
#undef UNLIKELY
#endif

#define LIKELY(expr) __builtin_expect(!!(expr), 1)
#define UNLIKELY(expr) __builtin_expect(!!(expr), 0)

#define PREFETCH(addr) __builtin_prefetch(addr)

#endif