gistfile1.txt

/// SUBREG_TO_REG - Assert the value of bits in a super register.
/// The result of this instruction is the value of the second operand inserted
/// into the subregister specified by the third operand.  All other bits are
/// assumed to be equal to the bits in the immediate integer constant in the
/// first operand.  This instruction just communicates information; No code
/// should be generated.
/// This is typically used after an instruction where the write to a subregister
/// implicitely cleared the bits in the super registers.