Initial HS compiler: compiler options, DFA and scheduler hooks.
Avoid updating insn_info without a valid curr_sched_clock
Remove A5 reference
Use INSN_INFO_CLOCK_P in insn_cycle_count().
Add HS specific options to gcc driver
Fix ffssi2 pattern
Avoid web issue (i.e. cprop removes the add due tp incoplete reg replacingby web, see builtin-bitops-1.c)
Add HS to multilib options
Remove t-arc-em file
Use TARGET_SCHED_DFA_NEW_CYCLE to collect the clock_var
Fix Star 9000678327: ZOL: unsafe update of lp_count register
Avoid branches at the end of ZOLs
Libgcc: HS related mods
Fix compilation warnings. Part I
Enable missing FP symbols when using NORM handmade fp routines
Revert to the previous state
Set TARGET_OPTFPE vor V2s, and TARGET_NORM for HS
Allow HS to be used when configure (--with-cpu)
Avoid debug instructions in arc_sched_correct_unit
Add XBFU