This is an archive of the discontinued LLVM Phabricator instance.

Make DeadMachineInstructionElim preserve CFG
ClosedPublic

Authored by arsenm on May 31 2016, 8:57 PM.

Reviewers

qcolombet

arsenm retitled this revision from to Make DeadMachineInstructionElim preserve CFG.

arsenm updated this object.

arsenm added a subscriber: llvm-commits.

ping

LGTM.

This revision is now accepted and ready to land.Jun 21 2016, 3:36 PM

r273330

Path

Size

lib/

CodeGen/

5 lines

Show All 36 Lines	class DeadMachineInstructionElim : public MachineFunctionPass {
BitVector LivePhysRegs;		BitVector LivePhysRegs;

public:		public:
static char ID; // Pass identification, replacement for typeid		static char ID; // Pass identification, replacement for typeid
DeadMachineInstructionElim() : MachineFunctionPass(ID) {		DeadMachineInstructionElim() : MachineFunctionPass(ID) {
initializeDeadMachineInstructionElimPass(*PassRegistry::getPassRegistry());		initializeDeadMachineInstructionElimPass(*PassRegistry::getPassRegistry());
}		}

		void getAnalysisUsage(AnalysisUsage &AU) const override {
		AU.setPreservesCFG();
		MachineFunctionPass::getAnalysisUsage(AU);
		}

private:		private:
bool isDead(const MachineInstr *MI) const;		bool isDead(const MachineInstr *MI) const;
};		};
}		}
char DeadMachineInstructionElim::ID = 0;		char DeadMachineInstructionElim::ID = 0;
char &llvm::DeadMachineInstructionElimID = DeadMachineInstructionElim::ID;		char &llvm::DeadMachineInstructionElimID = DeadMachineInstructionElim::ID;

INITIALIZE_PASS(DeadMachineInstructionElim, "dead-mi-elimination",		INITIALIZE_PASS(DeadMachineInstructionElim, "dead-mi-elimination",
▲ Show 20 Lines • Show All 124 Lines • Show Last 20 Lines