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Hi, Currently available/clobber registers are computed only for GENERAL_REGS, this patch extends it for all reg pressure classes. It also updates existing uses in various places. Bootstrap and test on x86_64 and AArch64. Is it OK? Thanks, bin 2017-05-10 Bin Cheng <bin.cheng@arm.com> * cfgloop.h (struct target_cfgloop): Change x_target_avail_regs and x_target_clobbered_regs into array fields. (init_avail_clobber_regs): New declaration. * cfgloopanal.c (memmodel.h, ira.h): Include header files. (init_set_costs): Remove computation for old x_target_avail_regs and x_target_clobbered_regs fields. (init_avail_clobber_regs): New function. (estimate_reg_pressure_cost): Update the uses. * toplev.c (cfgloop.h): Update comment why the header file is needed. (backend_init_target): Call init_avail_clobber_regs. * tree-predcom.c (memmodel.h, ira.h): Include header files. (MAX_DISTANCE): Update the use. * tree-ssa-loop-ivopts.c (determine_set_costs): Update the uses. (determine_set_costs): Ditto.
Attachment:
0002-init-available-regs-20170316.txt
Description: 0002-init-available-regs-20170316.txt
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