Differential D71007 Diff 233288 llvm/include/llvm/CodeGen/ReachingDefAnalysis.h

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llvm/include/llvm/CodeGen/ReachingDefAnalysis.h

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/// Return whether A and B use the same def of PhysReg.		/// Return whether A and B use the same def of PhysReg.
bool hasSameReachingDef(MachineInstr A, MachineInstr B, int PhysReg);		bool hasSameReachingDef(MachineInstr A, MachineInstr B, int PhysReg);

/// Return whether the given register is used after MI, whether it's a local		/// Return whether the given register is used after MI, whether it's a local
/// use or a live out.		/// use or a live out.
bool isRegUsedAfter(MachineInstr *MI, int PhysReg);		bool isRegUsedAfter(MachineInstr *MI, int PhysReg);

		/// Provides the first instruction before MI that uses PhysReg
		MachineInstr getInstWithUseBefore(MachineInstr MI, int PhysReg);

		/// Provides all instructions before MI that uses PhysReg
		void getAllInstWithUseBefore(MachineInstr *MI, int PhysReg,
		SmallVectorImpl<MachineInstr*> &Uses);

/// Provides the clearance - the number of instructions since the closest		/// Provides the clearance - the number of instructions since the closest
/// reaching def instuction of PhysReg that reaches MI.		/// reaching def instuction of PhysReg that reaches MI.
int getClearance(MachineInstr *MI, MCPhysReg PhysReg);		int getClearance(MachineInstr *MI, MCPhysReg PhysReg);

/// Provides the uses, in the same block as MI, of register that MI defines.		/// Provides the uses, in the same block as MI, of register that MI defines.
/// This does not consider live-outs.		/// This does not consider live-outs.
void getReachingLocalUses(MachineInstr *MI, int PhysReg,		void getReachingLocalUses(MachineInstr *MI, int PhysReg,
SmallVectorImpl<MachineInstr*> &Uses);		SmallVectorImpl<MachineInstr*> &Uses);
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