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* doc/extend.texi (flatten attribute): Remove note about unit-at-a-time * doc/invoke.texi (--combine): Likewise. (-finline-functions-called-once): Update levels when enabled. (-funit-at-a-time): Document new behaviour. (-ftoplevel-reorder): Document that it is enabled -O0 and imply -fno-section-anchors when disabled explicitly. (inline params): They are not ignored now. (precompiled headers): Remove unit-at-a-time as being incompatible. * opts.c (decode_options): Handle unit-at-a-time as alias; imply -fno-section-anchors when toplevel reorder is disabled explicitly. * common.opt (ftoplevel-reorder): Set default value to 2. (funit-at-a-time): Set default value to 1. * config/rs6000/rs6000.c (optimization_options): Set section anchors to 2. From-SVN: r138009
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