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| author | Feng Xue <fxue@os.amperecomputing.com> | 2019-12-02 06:37:30 +0000 |
|---|---|---|
| committer | Feng Xue <fxue@gcc.gnu.org> | 2019-12-02 06:37:30 +0000 |
| commit | 9b14fc3326e087975653b1af8ac54114041cde51 (patch) | |
| tree | 7898f1998d7895c9f2958982aae053a808ebc318 /gcc/params.opt | |
| parent | 4569f8b3652ae1e5ca353c24148b50c786b36c8b (diff) | |
Enable recursive function versioning
2019-12-02 Feng Xue <fxue@os.amperecomputing.com>
PR ipa/92133
* doc/invoke.texi (ipa-cp-max-recursive-depth): Document new option.
(ipa-cp-min-recursive-probability): Likewise.
* params.opt (ipa-cp-max-recursive-depth): New.
(ipa-cp-min-recursive-probability): Likewise.
* ipa-cp.c (ipcp_lattice<valtype>::add_value): Add two new parameters
val_p and unlimited.
(self_recursively_generated_p): New function.
(get_val_across_arith_op): Likewise.
(propagate_vals_across_arith_jfunc): Add constant propagation for
self-recursive function.
(incorporate_penalties): Do not penalize pure self-recursive function.
(good_cloning_opportunity_p): Dump node_is_self_scc flag.
(propagate_constants_topo): Set node_is_self_scc flag for cgraph node.
(get_info_about_necessary_edges): Relax hotness check for edge to
self-recursive function.
* ipa-prop.h (ipa_node_params): Add new field node_is_self_scc.
2019-12-02 Feng Xue <fxue@os.amperecomputing.com>
PR ipa/92133
* gcc.dg/ipa/ipa-clone-2.c: New test.
From-SVN: r278893
Diffstat (limited to 'gcc/params.opt')
| -rw-r--r-- | gcc/params.opt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/params.opt b/gcc/params.opt index 586b539ec5f..d88ae0c468b 100644 --- a/gcc/params.opt +++ b/gcc/params.opt @@ -198,6 +198,14 @@ Threshold ipa-cp opportunity evaluation that is still considered beneficial to c Common Joined UInteger Var(param_ipa_cp_loop_hint_bonus) Init(64) Param Compile-time bonus IPA-CP assigns to candidates which make loop bounds or strides known. +-param=ipa-cp-max-recursive-depth= +Common Joined UInteger Var(param_ipa_cp_max_recursive_depth) Init(8) Param +Maximum depth of recursive cloning for self-recursive function. + +-param=ipa-cp-min-recursive-probability= +Common Joined UInteger Var(param_ipa_cp_min_recursive_probability) Init(2) Param +Recursive cloning only when the probability of call being executed exceeds the parameter. + -param=ipa-cp-recursion-penalty= Common Joined UInteger Var(param_ipa_cp_recursion_penalty) Init(40) IntegerRange(0, 100) Param Percentage penalty the recursive functions will receive when they are evaluated for cloning. |