/usr/include/llvm-4.0/llvm/CodeGen/MachineFunctionPass.h is in llvm-4.0-dev 1:4.0.1-10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | //===-- MachineFunctionPass.h - Pass for MachineFunctions --------*-C++ -*-===//
//
// 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 MachineFunctionPass class. MachineFunctionPass's are
// just FunctionPass's, except they operate on machine code as part of a code
// generator. Because they operate on machine code, not the LLVM
// representation, MachineFunctionPass's are not allowed to modify the LLVM
// representation. Due to this limitation, the MachineFunctionPass class takes
// care of declaring that no LLVM passes are invalidated.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINEFUNCTIONPASS_H
#define LLVM_CODEGEN_MACHINEFUNCTIONPASS_H
#include "llvm/Pass.h"
#include "llvm/CodeGen/MachineFunction.h"
namespace llvm {
/// MachineFunctionPass - This class adapts the FunctionPass interface to
/// allow convenient creation of passes that operate on the MachineFunction
/// representation. Instead of overriding runOnFunction, subclasses
/// override runOnMachineFunction.
class MachineFunctionPass : public FunctionPass {
public:
bool doInitialization(Module&) override {
// Cache the properties info at module-init time so we don't have to
// construct them for every function.
RequiredProperties = getRequiredProperties();
SetProperties = getSetProperties();
ClearedProperties = getClearedProperties();
return false;
}
protected:
explicit MachineFunctionPass(char &ID) : FunctionPass(ID) {}
/// runOnMachineFunction - This method must be overloaded to perform the
/// desired machine code transformation or analysis.
///
virtual bool runOnMachineFunction(MachineFunction &MF) = 0;
/// getAnalysisUsage - Subclasses that override getAnalysisUsage
/// must call this.
///
/// For MachineFunctionPasses, calling AU.preservesCFG() indicates that
/// the pass does not modify the MachineBasicBlock CFG.
///
void getAnalysisUsage(AnalysisUsage &AU) const override;
virtual MachineFunctionProperties getRequiredProperties() const {
return MachineFunctionProperties();
}
virtual MachineFunctionProperties getSetProperties() const {
return MachineFunctionProperties();
}
virtual MachineFunctionProperties getClearedProperties() const {
return MachineFunctionProperties();
}
private:
MachineFunctionProperties RequiredProperties;
MachineFunctionProperties SetProperties;
MachineFunctionProperties ClearedProperties;
/// createPrinterPass - Get a machine function printer pass.
Pass *createPrinterPass(raw_ostream &O,
const std::string &Banner) const override;
bool runOnFunction(Function &F) override;
};
} // End llvm namespace
#endif
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