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* resource.c (find_basic_block): Use BLOCK_FOR_INSN to look up a label's basic block. (mark_target_live_regs): Tidy and rework obsolete comments. Change back DF problem to LIVE. If a label starts a basic block, assume that all registers that used to be live then still are. (init_resource_info): If a label starts a basic block, set its BLOCK_FOR_INSN accordingly. (fini_resource_info): Undo the setting of BLOCK_FOR_INSN. From-SVN: r146829
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