llvm-6502/include/llvm/Transforms/RSProfiling.h
Douglas Gregor 0c8ae782cb Make a few more LLVM headers parsable as standalone headers.
Fix some problems with the hidden copy constructors for
ImmutableMap/ImmutableSet found by Clang++.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86186 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-05 23:01:30 +00:00

43 lines
1.6 KiB
C++

//===- RSProfiling.cpp - Various profiling using random sampling ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file 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.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_RSPROFILING_H
#define LLVM_TRANSFORMS_RSPROFILING_H
#include "llvm/Pass.h"
namespace llvm {
class Value;
//===--------------------------------------------------------------------===//
/// 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 {
static char ID; // Pass identification, replacement for typeinfo
RSProfilers() : ModulePass(&ID) {}
/// isProfiling - This method returns true if the value passed it was
/// inserted by the profiler.
virtual bool isProfiling(Value* v) = 0;
};
}
#endif