mirror of git://gcc.gnu.org/git/gcc.git
1d30acf687
2016-10-17 Yuri Rumyantsev <ysrumyan@gmail.com> * dominance.c (dom_info::dom_info): Add new constructor for region which is vector of basic blocks. (dom_init): New method to initialize members common for both constructors. (dom_info::dom_info): Invoke dom_init for partial initialization. (dom_info::get_idom): Add check to corner cases on basic blocks which are not in region. (dom_info::calc_dfs_tree): Check M_FAKE_EXIT_EDGE instead of M_REVERSE to detect unreachable bbs. (dom_info::calc_idoms): Likewise. (compute_dom_fast_query_in_region): New function. (calculate_dominance_info_for_region): Likewise. (free_dominance_info_for_region): Likewise. * dominance.h: Add prototypes for introduced region-based functions tree-if-conv.c: (build_region): New function. (if_convertible_loop_p_1): Invoke local version of post-dominators calculation before basic block predication with subsequent freeing post-dominator info. (tree_if_conversion): Remove free of post-dominator info (pass_if_conversion::execute): Delete detection of infinite loops and fake edges to exit block since post-dominator calculation is performed per if-converted loop only. From-SVN: r241275 |
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