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Age	Commit message (Collapse)	Author	Files	Lines
2015-10-29	[PATCH][PR tree-optimization/67892] Use FSM threader to handle backedges	Jeff Law	1	-7/+38
	PR tree-optimization/67892 * tree-ssa-threadedge.c (simplify_controL_stmt_condition): Fix typo in comment. (thread_through_normal_block): If we have seen a backedge, then do nothing. No longer call find_jump_threads_backwards here. (thread_across_edge): Use find_jump_threads_backwards to find jump threads if the old style threader was not successful. * tree-ssa-threadbackward.c (get_gimple_control_stmt): Use gsi_last_nondebug_bb. Return NULL if the block does not end with a control statement. (find_jump_threads_backwards): Setup code moved here from tree-ssa-threadedge.c::thread_through_normal_block. Accept single edge argument instead of name & block. * tree-ssa-threadbackward.h (find_jump_threads_backwards): Update prototype. PR tree-optimization/67892 * gcc.dg/tree-ssa/pr21417: Update expected output. * gcc.dg/tree-ssa/ssa-dom-thread-2b.c: Likewise. From-SVN: r229538
2015-10-26	[PATCH] [PR tree-optimization/68013] Make sure first block in FSM path	Jeff Law	1	-0/+5
	is in VISITED_BBs PR tree-optimization/68013 * tree-ssa-threadbackward.c (fsm_find_control_statement_thread_paths): Make sure the first block in the path is in VISITED_BBs. PR tree-optimization/68013 * gcc.c-torture/compile/pr68013.c: New test. From-SVN: r229375
2015-10-13	[PATCH] Allow FSM to thread single block cases too	Jeff Law	1	-4/+0
	* tree-ssa-threadbackward.c (fsm_find_control_statement_thread_paths): Allow single block jump threading paths. * gcc.dg/tree-ssa/ssa-thread-13.c: New test. From-SVN: r228757
2015-10-12	[PATCH] Allow FSM threader to thread more complex conditions	Jeff Law	1	-3/+33
	* tree-ssa-threadbackward.c (get_gimple_control_stmt): New function. (fsm_find_control_stmt_paths): Change name of first argument to more accurately relfect what it really is. Handle simplification of GIMPLE_COND after finding a thread path for NAME. * tree-ssa-threadedge.c (simplify_control_stmt_condition): Allow nontrivial conditions to be handled by FSM threader. (thread_through_normal_block): Extract the name to looup via FSM threader from COND_EXPR. * gcc.dg/tree-ssa/ssa-thread-12.c: New test. * gcc.dg/tree-ssa/ssa-dom-thread-7.c: Update expected output. * gcc.dg/tree-ssa/ssa-thread-11.c: Renamed from ssa-dom-thread-11.c. From-SVN: r228739
2015-10-12	[PATCH] Improve FSM threader to handle compiler temporaries too	Jeff Law	1	-3/+2
	* tree-ssa-threadbackward.c (fsm_find_thread_path): Remove restriction that traced SSA_NAME is a user variable. * gcc.dg/tree-ssa/ssa-dom-thread-11.c: New test. From-SVN: r228727
2015-10-11	[PATCH] Refactoring FSM bits into their own file	Jeff Law	1	-0/+325
	[PATCH] Refactoring FSM bits into their own file * tree-ssa-threadedge.c (fsm_find_thread_path): Moved from here into tree-ssa-threadbackward.c. (fsm_find_control_statement_thread_paths): Likewise. (thread_through_normal_block): Break out FSM bits and move them into a new function in tree-ssa-threadbackward.c. Call new function instead. Minimize header file usage. * tree-ssa-threadbackward.h: New file. * tree-ssa-threadbackward.c: Likewise. * Makefile.in (OBJS): Add tree-ssa-threadbackward.o From-SVN: r228700