diff options
| author | Easwaran Raman <eraman@google.com> | 2012-10-16 05:28:08 +0000 |
|---|---|---|
| committer | Easwaran Raman <eraman@google.com> | 2012-10-16 05:28:08 +0000 |
| commit | 301498c17365c8497e19652764b94f65171c340c (patch) | |
| tree | 73e706f18d0cfa88bafa5eb814ff70dbc3d9885c /gcc/dojump.c | |
| parent | 5885dfeabdf7f96c268f3b2ba464f2a857b044bf (diff) | |
2012-10-15 Easwaran Raman <eraman@google.com>
* optabs.c (emit_cmp_and_jump_insn_1): Add a new parameter to
specificy the probability of taking the jump.
(emit_cmp_and_jump_insns): Likewise.
(expand_compare_and_swap_loop): Make the jump predicted not taken.
* dojump.c (do_compare_rtx_and_jump): Remove the code attaching
REG_BR_PROB note and pass probability to emit_cmp_and_jump_insns.
* cfgbuild.c (compute_outgoing_frequencies): Do not guess outgoing
probabilities for branches with more than two successors.
* expr.c (emit_block_move_via_loop): Predict the loop backedge loop
to be highly taken.
(try_casesi): Pass the probability of jumping to the default label.
(try_tablejump): Likewise.
(do_tablejump): Likewise.
* expr.h (try_tablejump): Add a new parameter.
(try_casesi): Likewise.
(emit_cmp_and_jump_insns): Add probability as default parameter with a
default value of -1.
* except.c (sjlj_emit_function_enter): Pass probability to
emit_cmp_and_jump_insns.
* stmt.c (case_node): Add new fields PROB and SUBTREE_PROB.
(do_jump_if_equal): Pass probability for REG_BR_PROB note.
(add_case_node): Pass estimated probability of jumping to the case
label.
(emit_case_decision_tree): Pass default_prob to emit_case_nodes.
(get_outgoing_edge_probs): New function.
(conditional_probability): Likewise.
(reset_out_edges_aux): Likewise.
(compute_cases_per_edge): Likewise.
(emit_case_dispatch_table): Update probabilities of edges coming out
of the switch statement.
(expand_case): Compute and propagate default edge probability to
emit_case_dispatch_table.
(expand_sjlj_dispatch_table): Update calls to add_case_node and
emit_case_dispatch_table.
(balance_case_nodes): Update subtree_prob values.
(emit_case_nodes): Compute edge probabilities and add pass them to
emit_cmp_and_jump_insns.
testsuite/ChangeLog:
2012-10-15 Easwaran Raman <eraman@google.com>
* gcc.dg/tree-prof/switch-case-1.c: New test case.
* gcc.dg/tree-prof/switch-case-2.c: New test case.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@192488 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/dojump.c')
| -rw-r--r-- | gcc/dojump.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/gcc/dojump.c b/gcc/dojump.c index 66d3b04bd03..35cb2cf62eb 100644 --- a/gcc/dojump.c +++ b/gcc/dojump.c @@ -886,7 +886,6 @@ do_compare_rtx_and_jump (rtx op0, rtx op1, enum rtx_code code, int unsignedp, { rtx tem; rtx dummy_label = NULL_RTX; - rtx last; /* Reverse the comparison if that is safe and we want to jump if it is false. Also convert to the reverse comparison if the target can @@ -1069,25 +1068,8 @@ do_compare_rtx_and_jump (rtx op0, rtx op1, enum rtx_code code, int unsignedp, } } - last = get_last_insn (); emit_cmp_and_jump_insns (op0, op1, code, size, mode, unsignedp, - if_true_label); - if (prob != -1 && profile_status != PROFILE_ABSENT) - { - for (last = NEXT_INSN (last); - last && NEXT_INSN (last); - last = NEXT_INSN (last)) - if (JUMP_P (last)) - break; - if (last - && JUMP_P (last) - && ! NEXT_INSN (last) - && any_condjump_p (last)) - { - gcc_assert (!find_reg_note (last, REG_BR_PROB, 0)); - add_reg_note (last, REG_BR_PROB, GEN_INT (prob)); - } - } + if_true_label, prob); } if (if_false_label) |