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081c34b725
must be called in the pass's constructor. This function uses static dependency declarations to recursively initialize the pass's dependencies. Clients that only create passes through the createFooPass() APIs will require no changes. Clients that want to use the CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h before parsing commandline arguments. I have tested this with all standard configurations of clang and llvm-gcc on Darwin. It is possible that there are problems with the static dependencies that will only be visible with non-standard options. If you encounter any crash in pass registration/creation, please send the testcase to me directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116820 91177308-0d34-0410-b5e6-96231b3b80d8
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
//===-------------- llvm/CodeGen/ProcessImplicitDefs.h ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_PROCESSIMPLICITDEFS_H
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#define LLVM_CODEGEN_PROCESSIMPLICITDEFS_H
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/ADT/SmallSet.h"
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namespace llvm {
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class MachineInstr;
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class TargetInstrInfo;
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/// Process IMPLICIT_DEF instructions and make sure there is one implicit_def
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/// for each use. Add isUndef marker to implicit_def defs and their uses.
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class ProcessImplicitDefs : public MachineFunctionPass {
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private:
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bool CanTurnIntoImplicitDef(MachineInstr *MI, unsigned Reg,
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unsigned OpIdx, const TargetInstrInfo *tii_,
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SmallSet<unsigned, 8> &ImpDefRegs);
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public:
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static char ID;
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ProcessImplicitDefs() : MachineFunctionPass(ID) {
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initializeProcessImplicitDefsPass(*PassRegistry::getPassRegistry());
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}
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virtual void getAnalysisUsage(AnalysisUsage &au) const;
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virtual bool runOnMachineFunction(MachineFunction &fn);
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};
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}
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#endif // LLVM_CODEGEN_PROCESSIMPLICITDEFS_H
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