/// JumpInstrTableInfo.
///
/// These special functions get lowered in AsmPrinter to assembly of the form:
+/// \verbatim
/// .globl f
/// .type f,@function
/// .align 8,0x90
/// f:
/// jmp f_orig@PLT
+/// \endverbatim
///
/// Support for an architecture depends on two functions in TargetInstrInfo:
/// getUnconditionalBranch, and getTrap. AsmPrinter uses these to generate the