diff options
| author | Rong Xu <xur@google.com> | 2013-02-08 23:55:01 +0000 |
|---|---|---|
| committer | Rong Xu <xur@google.com> | 2013-02-08 23:55:01 +0000 |
| commit | 620db28535e3d3846c491911f628bbb2bb7d7e8e (patch) | |
| tree | bade121b9062c933bb32fdb1654c57c8296be104 | |
| parent | f5028d2bedcf3b9a4c2ad491204941532da83525 (diff) | |
2013-02-08 Rong Xu <xur@google.com>
* params.def (PARAM_LIPO_GEN_LIMIT_IPA_INLINE): New parameter.
* ipa-inline.c (inline_small_functions): Suppress ipa-inline
for LIPO profile-gen compilation.
git-svn-id: https://gcc.gnu.org/svn/gcc/branches/google/gcc-4_7@195906 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ipa-inline.c | 7 | ||||
| -rw-r--r-- | gcc/params.def | 10 |
2 files changed, 17 insertions, 0 deletions
diff --git a/gcc/ipa-inline.c b/gcc/ipa-inline.c index f870949faa1..926616427e9 100644 --- a/gcc/ipa-inline.c +++ b/gcc/ipa-inline.c @@ -1575,6 +1575,13 @@ inline_small_functions (void) if (!can_inline_edge_p (edge, true)) continue; + /* Suppress ipa-inline if the callee has indirect calls. They can + result in imprecise dynamic call graph in LIPO profile-generate. */ + if (PARAM_VALUE (PARAM_LIPO_GEN_LIMIT_IPA_INLINE) + && profile_arc_flag && flag_dyn_ipa + && edge->callee->indirect_calls) + continue; + callee = cgraph_function_or_thunk_node (edge->callee, NULL); growth = estimate_edge_growth (edge); if (dump_file) diff --git a/gcc/params.def b/gcc/params.def index 436d51e06d8..659ebaaa020 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -974,6 +974,16 @@ DEFPARAM (PARAM_LIPO_CUTOFF, " enviornment variable", 100, 0, 100) +/* In LIPO profile-gen, use this parameter to limit IPA inline. */ +DEFPARAM (PARAM_LIPO_GEN_LIMIT_IPA_INLINE, + "lipo-gen-limit-ipa-inline", + "In LIPO profile gen compilation, the inline of a function that" + "has hot indirect call can result in imprecise dynamic call graph due" + "to phrase ordering issues. This parameter is used to disable" + "the inline of function that has a indirect call, only in LIPO-gen" + "compilation. Default is 0. If the value is 1, limit is on", + 0, 0, 1) + /* In LIPO profile-gen, use this parameter to set random group generation seed value. */ DEFPARAM (PARAM_LIPO_RANDOM_SEED, |