diff options
Diffstat (limited to 'gcc/tree-ssa-loop.c')
| -rw-r--r-- | gcc/tree-ssa-loop.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/gcc/tree-ssa-loop.c b/gcc/tree-ssa-loop.c index b2a7d18..7771a0d 100644 --- a/gcc/tree-ssa-loop.c +++ b/gcc/tree-ssa-loop.c @@ -436,8 +436,7 @@ const pass_data pass_data_scev_cprop = 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ - ( TODO_cleanup_cfg - | TODO_update_ssa_only_virtuals ), /* todo_flags_finish */ + 0, /* todo_flags_finish */ }; class pass_scev_cprop : public gimple_opt_pass @@ -449,10 +448,24 @@ public: /* opt_pass methods: */ virtual bool gate (function *) { return flag_tree_scev_cprop; } - virtual unsigned int execute (function *) { return scev_const_prop (); } + virtual unsigned int execute (function *); }; // class pass_scev_cprop +unsigned +pass_scev_cprop::execute (function *) +{ + struct loop *loop; + bool any = false; + + /* Perform final value replacement in loops, in case the replacement + expressions are cheap. */ + FOR_EACH_LOOP (loop, LI_FROM_INNERMOST) + any |= final_value_replacement_loop (loop); + + return any ? TODO_cleanup_cfg | TODO_update_ssa_only_virtuals : 0; +} + } // anon namespace gimple_opt_pass * |