checkInterference overloads

Synopses

Declared in <llvm/CodeGen/LiveRegMatrix.h>

Check for interference before assigning VirtReg to PhysReg. If this function returns IK_Free, it is legal to assign(VirtReg, PhysReg). When there is more than one kind of interference, the InterferenceKind with the highest enum value is returned.

InterferenceKind
checkInterference(
    LiveInterval const& VirtReg,
    MCRegister PhysReg);

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Check for interference in the segment [Start, End) that may prevent] assignment to PhysReg. If this function returns true, there is interference in the segment [Start, End) of some other interval already] assigned to PhysReg. If this function returns false, PhysReg is free at the segment [Start, End).]

bool
checkInterference(
    SlotIndex Start,
    SlotIndex End,
    MCRegister PhysReg);

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