[PATCH 1/3] Fix probabilities for jump table (PR tree-optimization/86702).

[marxin]

The patch set even probability to jump tables based on number of
cases which are handled on each edge.

gcc/ChangeLog:

2018-08-06  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86702
	* tree-switch-conversion.c (jump_table_cluster::emit):
        Make probabilities even for values in jump table
        according to number of cases handled.
	(switch_decision_tree::compute_cases_per_edge): Pass
        argument to reset_out_edges_aux function.
	(switch_decision_tree::analyze_switch_statement): Likewise.
	* tree-switch-conversion.h (switch_decision_tree::reset_out_edges_aux):
        Make it static.
---
 gcc/tree-switch-conversion.c | 40 ++++++++++++++++++++++++++++++++++--
 gcc/tree-switch-conversion.h | 11 +++++-----
 2 files changed, 43 insertions(+), 8 deletions(-)

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