llvm::getIConstantSplatVal

Synopses

Declared in <llvm/CodeGen/GlobalISel/Utils.h>

Return the scalar integral splat value of Reg if possible.

std::optional<APInt>
getIConstantSplatVal(
    Register const Reg,
    MachineRegisterInfo const& MRI);

Return the scalar integral splat value defined by MI if possible.

std::optional<APInt>
getIConstantSplatVal(
    MachineInstr const& MI,
    MachineRegisterInfo const& MRI);

The splat APInt, or std::nullopt.

Name	Description
Reg	Virtual register that may define a splat constant.
MRI	Register information for the function.
MI	Instruction that may define a splat constant.