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Hello, The attach patch tries to achieve optimised SC by normalizing the partial schedule (having the cycles start from cycle zero). The branch location must be placed in row ii-1 in the final scheduling. If that's not the case after the normalization then it tries to move the branch to that row if possible, while preserving the scheduling of the rest of the instructions. The patch was tested together with the rest of the patches in this series. On ppc64-redhat-linux regtest as well as bootstrap with SMS flags enabling SMS also on loops with stage count 1. Regtested on SPU. On arm-linux-gnueabi regtseted on c,c++. Bootstrap c language with SMS flags enabling SMS also on loops with stage count 1. OK for mainline? Thanks, Revital Changelog: * modulo-sched.c (calculate_stage_count, calculate_must_precede_follow, get_sched_window, try_scheduling_node_in_cycle, remove_node_from_ps): Add declaration. (update_node_sched_params, set_must_precede_follow, optimize_sc): New functions. (reset_sched_times): Call update_node_sched_params. (sms_schedule): Call optimize_sc. (get_sched_window): Change function arguments. (sms_schedule_by_order): Update call to get_sched_window. all set_must_precede_follow. (calculate_stage_count): Add function argument.
Attachment:
patch_opt_sc_18_5.txt
Description: Text document
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