llvm::TargetLowering::isIndexingLegal

Synopsis

Declared in <llvm/CodeGen/TargetLowering.h>

virtual
bool
isIndexingLegal(
    MachineInstr& MI,
    Register Base,
    Register Offset,
    bool IsPre,
    MachineRegisterInfo& MRI) const;

Description

Returns true if the specified base+offset is a legal indexed addressing mode for this target. MI is the load or store instruction that is being considered for transformation.

Return Value

True if the given base and offset form a legal indexed addressing mode for this instruction.

Parameters

Name	Description
MI	Machine instruction being queried or modified.
Base	Filled with the base pointer.
Offset	Filled with the offset.
IsPre	True for pre-indexed mode.
MRI	Machine register info.