On 9/22/23 06:56, Hongyu Wang wrote:
From: Kong Lingling <lingling.k...@intel.com>
Current reload infrastructure does not support selective base_reg_class
for backend insn. Add new macros with insn parameters to base_reg_class
for lra/reload usage.
gcc/ChangeLog:
* addresses.h (base_reg_class): Add insn argument and new macro
INSN_BASE_REG_CLASS.
(regno_ok_for_base_p_1): Add insn argument and new macro
REGNO_OK_FOR_INSN_BASE_P.
(regno_ok_for_base_p): Add insn argument and parse to ok_for_base_p_1.
* doc/tm.texi: Document INSN_BASE_REG_CLASS and
REGNO_OK_FOR_INSN_BASE_P.
* doc/tm.texi.in: Ditto.
* lra-constraints.cc (process_address_1): Pass insn to
base_reg_class.
(curr_insn_transform): Ditto.
* reload.cc (find_reloads): Ditto.
(find_reloads_address): Ditto.
(find_reloads_address_1): Ditto.
(find_reloads_subreg_address): Ditto.
* reload1.cc (maybe_fix_stack_asms): Ditto.
The patch is ok for committing to the trunk. Thank you.
It would be nice to add to the documentation that INSN_BASE_REG_CLASS,
INSN_INDEX_REG_CLASS, and REGNO_OK_FOR_INSN_BASE_P if defined have
priority over older corresponding macros as it is already documented for
REGNO_MODE_CODE_OK_FOR_BASE_P relating to REGNO_OK_FOR_BASE_P. But this
small issue can be addressed later.
