The changes are made in this patch for the instruction prefetch optimizations for Microblaze.
Reg tested for Microblaze target.
The changes are made for instruction prefetch optimizations for Microblaze. The
"wic" microblaze instruction is the
instruction prefetch instruction. The instruction prefetch optimization is done
to generate the iprefetch instruction
at the call site fall through path. This optimization is enabled with
microblaze target flag mxl-prefetch. The purpose
of adding the flags is that selection of "wic" instruction should be enabled in
the reconfigurable design and the
selection is not enabled by default.
ChangeLog:
2015-12-01 Ajit Agarwal <ajit...@xilinx.com>
* config/microblaze/microblaze.c
(get_branch_target): New.
(insert_wic_for_ilb_runout): New.
(insert_wic): New.
(microblaze_machine_dependent_reorg): New.
(TARGET_MACHINE_DEPENDENT_REORG): Define macro.
* config/microblaze/microblaze.md
(UNSPEC_IPREFETCH): Define.
(iprefetch): New pattern
* config/microblaze/microblaze.opt
(mxl-prefetch): New flag.
Signed-off-by:Ajit Agarwal ajit...@xilinx.com
Thanks & Regards
Ajit
iprefetch.patch
Description: iprefetch.patch
