The ARC ZOL implementation doesn't allow the last instruction to be a
control instruction or part of a delay slot. Thus, we add a note to
the last ZOL instruction which will prevent it to finish into a delay
slot.
2017-10-20 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (hwloop_optimize): Prevent the last
ZOL instruction to end into a delay slot.
* config/arc/arc.md (cond_delay_insn): Check if the instruction
can be placed into a delay slot against reg_note.
(in_delay_slot): Likewise.
testsuite/
2017-10-20 Claudiu Zissulescu <claziss@synopsys.com>
* gcc.target/arc/loop-3.c: New test.
* gcc.target/arc/loop-4.c: Likewise.
[FIX][ZOL] fix checking for jumps
From-SVN: r255275
