From 78cf0a232ee4314a9d668aab9b4b54f86b308111 Mon Sep 17 00:00:00 2001 From: Sebastian Pop Date: Thu, 27 Aug 2015 17:11:21 -0500 Subject: port revision 219584 from linaro/gcc-4_9-branch gcc/ 2015-01-14 Yvan Roux Backport from trunk r218451. 2014-12-06 James Greenhalgh Sebastian Pop Brian Rzycki 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 Backport from trunk r218451. 2014-12-06 James Greenhalgh Sebastian Pop Brian Rzycki 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. --- gcc-4.9/gcc/params.def | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'gcc-4.9/gcc/params.def') diff --git a/gcc-4.9/gcc/params.def b/gcc-4.9/gcc/params.def index 3d2c913fd..518d379ed 100644 --- a/gcc-4.9/gcc/params.def +++ b/gcc-4.9/gcc/params.def @@ -1389,6 +1389,21 @@ DEFPARAM (PARAM_UNINIT_CONTROL_DEP_ATTEMPTS, "during uninitialized variable analysis", 1000, 1, 0) +DEFPARAM (PARAM_MAX_FSM_THREAD_PATH_INSNS, + "max-fsm-thread-path-insns", + "Maximum number of instructions to copy when duplicating blocks on a finite state automaton jump thread path", + 100, 1, 999999) + +DEFPARAM (PARAM_MAX_FSM_THREAD_LENGTH, + "max-fsm-thread-length", + "Maximum number of basic blocks on a finite state automaton jump thread path", + 10, 1, 999999) + +DEFPARAM (PARAM_MAX_FSM_THREAD_PATHS, + "max-fsm-thread-paths", + "Maximum number of new jump thread paths to create for a finite state automaton", + 50, 1, 999999) + /* Fraction of adjusting fp setting cost in framepointer shrinkwrapping. */ DEFPARAM (PARAM_FPSET_COST_FRACTION, "fpset-cost-fraction", -- cgit v1.2.3