diff options
| author | eraman <eraman@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-10-16 05:28:08 +0000 |
|---|---|---|
| committer | eraman <eraman@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-10-16 05:28:08 +0000 |
| commit | 584abc984ad20bb7569208d7b8b3cbede603eb74 (patch) | |
| tree | 73e706f18d0cfa88bafa5eb814ff70dbc3d9885c /gcc/expr.h | |
| parent | 56ab41fb671827aa6fc64b932624ae81da37d540 (diff) | |
| download | gcc-584abc984ad20bb7569208d7b8b3cbede603eb74.tar.gz | |
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: svn+ssh://gcc.gnu.org/svn/gcc/trunk@192488 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expr.h')
| -rw-r--r-- | gcc/expr.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/expr.h b/gcc/expr.h index 154648e7bff..562ffe03aca 100644 --- a/gcc/expr.h +++ b/gcc/expr.h @@ -190,7 +190,7 @@ extern int have_sub2_insn (rtx, rtx); /* Emit a pair of rtl insns to compare two rtx's and to jump to a label if the comparison is true. */ extern void emit_cmp_and_jump_insns (rtx, rtx, enum rtx_code, rtx, - enum machine_mode, int, rtx); + enum machine_mode, int, rtx, int prob=-1); /* Generate code to indirectly jump to a location given in the rtx LOC. */ extern void emit_indirect_jump (rtx); @@ -485,8 +485,8 @@ extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int, enum machine_mode, rtx, rtx, rtx, int); /* Two different ways of generating switch statements. */ -extern int try_casesi (tree, tree, tree, tree, rtx, rtx, rtx); -extern int try_tablejump (tree, tree, tree, tree, rtx, rtx); +extern int try_casesi (tree, tree, tree, tree, rtx, rtx, rtx, int); +extern int try_tablejump (tree, tree, tree, tree, rtx, rtx, int); /* Functions from alias.c */ #include "alias.h" |