[PATCH] PR 62173, re-shuffle insns for RTL loop invariant hoisting

[Jiong Wang]

Hi Matthew,

2015-04-21 15:24 GMT+01:00 Jiong Wang <jiong.wang@arm.com>:

>
> 2015-04-21  Jiong Wang  <jiong.wang@arm.com>
>
> gcc/
>   * loop-invariant.c (find_defs): Enable DF_DU_CHAIN build.
>   (vfp_const_iv): New hash table.
>   (expensive_addr_check_p): New boolean.
>   (init_inv_motion_data): Initialize new variables.>
>   (free_inv_motion_data): Release hash table.
>   (create_new_invariant): Set cheap_address to false for iv in
>   vfp_const_iv table.
>   (find_invariant_insn): Skip dependencies check for iv in vfp_const_iv
>   table.
>   (use_for_single_du): New function.
>   (reshuffle_insn_with_vfp): Likewise.
>   (find_invariants_bb): Call reshuffle_insn_with_vfp.

Is it possible for you to test this patch on spec2k6 on MIPS?
especially 436.cactusADM.
I am interested in the performance impact on other load/store machines.

Thanks.

Regards,
Jiong