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Diffstat (limited to 'include/llvm/Transforms/RSProfiling.h')
-rw-r--r-- | include/llvm/Transforms/RSProfiling.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/llvm/Transforms/RSProfiling.h b/include/llvm/Transforms/RSProfiling.h new file mode 100644 index 0000000000..897f63ef62 --- /dev/null +++ b/include/llvm/Transforms/RSProfiling.h @@ -0,0 +1,30 @@ +//===- RSProfiling.cpp - Various profiling using random sampling ----------===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file defines the abstract interface that a profiler must implement to +// support the random profiling transform. +// +//===----------------------------------------------------------------------===// + +namespace llvm { + //===--------------------------------------------------------------------===// + /// RSProfilers - The basic Random Sampling Profiler Interface Any profiler + /// that implements this interface can be transformed by the random sampling + /// pass to be sample based rather than always on. + /// + /// The only exposed function can be queried to find out if an instruction + /// was original or if it was inserted by the profiler. Implementations of + /// this interface are expected to chain to other implementations, such that + /// multiple profilers can be support simultaniously. + struct RSProfilers : public ModulePass { + /// isProfiling - This method returns true if the value passed it was + /// inserted by the profiler. + virtual bool isProfiling(Value* v) = 0; + }; +}; |