port revision 219584 from linaro/gcc-4_9-branch
gcc/
2015-01-14 Yvan Roux <yvan.roux@linaro.org>
Backport from trunk r218451.
2014-12-06 James Greenhalgh <james.greenhalgh@arm.com>
Sebastian Pop <s.pop@samsung.com>
Brian Rzycki <b.rzycki@samsung.com>
PR tree-optimization/54742
* params.def (max-fsm-thread-path-insns, max-fsm-thread-length,
max-fsm-thread-paths): New.
* doc/invoke.texi (max-fsm-thread-path-insns, max-fsm-thread-length,
max-fsm-thread-paths): Documented.
* tree-cfg.c (split_edge_bb_loc): Export.
* tree-cfg.h (split_edge_bb_loc): Declared extern.
* tree-ssa-threadedge.c (simplify_control_stmt_condition): Restore the
original value of cond when simplification fails.
(fsm_find_thread_path): New.
(fsm_find_control_statement_thread_paths): New.
(thread_through_normal_block): Call find_control_statement_thread_paths.
* tree-ssa-threadupdate.c (dump_jump_thread_path): Pretty print
EDGE_FSM_THREAD.
(verify_seme): New.
(duplicate_seme_region): New.
(thread_through_all_blocks): Generate code for EDGE_FSM_THREAD edges
calling duplicate_seme_region.
* tree-ssa-threadupdate.h (jump_thread_edge_type): Add EDGE_FSM_THREAD.
gcc/testsuite/
2015-01-14 Yvan Roux <yvan.roux@linaro.org>
Backport from trunk r218451.
2014-12-06 James Greenhalgh <james.greenhalgh@arm.com>
Sebastian Pop <s.pop@samsung.com>
Brian Rzycki <b.rzycki@samsung.com>
PR tree-optimization/54742
* gcc.dg/tree-ssa/ssa-dom-thread-6.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-7.c: New test.
9 files changed
