Moreover this patch is tested and run on hardware with Mibench/EEMBC benchmarks
for Microblaze target. The reconfigurable
design is enabled with the selection of "wic" instruction prefetch instruction
and above benchmarks compiled with -mxl-prefetch flags.
Thanks & Regards
Ajit
-----Original Message-----
From: Ajit Kumar Agarwal
Sent: Tuesday, December 01, 2015 2:19 PM
To: GCC Patches
Cc: Vinod Kathail; Shail Aditya Gupta; Vidhumouli Hunsigida; Nagaraju Mekala
Subject: [Patch,microblaze]: Instruction prefetch optimization for microblaze.
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
