diff options
| author | Jan Hubicka <jh@suse.cz> | 2020-10-22 17:32:32 +0200 |
|---|---|---|
| committer | Jan Hubicka <jh@suse.cz> | 2020-10-22 17:32:32 +0200 |
| commit | 0e590b68fa3743656f40aee8374b788b108350c7 (patch) | |
| tree | 1183a176f4543e9e141d2a2657e1212e6f1dc7af /gcc/cgraphunit.c | |
| parent | c26d7df103197e52dcd6edbb9a7f58eafdd6c715 (diff) | |
| download | gcc-0e590b68fa3743656f40aee8374b788b108350c7.zip gcc-0e590b68fa3743656f40aee8374b788b108350c7.tar.gz gcc-0e590b68fa3743656f40aee8374b788b108350c7.tar.bz2 | |
Materialize clones on demand
this patch removes the pass to materialize all clones and instead this
is now done on demand. The motivation is to reduce lifetime of function
bodies in ltrans that should noticeably reduce memory use for highly
parallel compilations of large programs (like Martin does) or with
partitioning reduced/disabled. For cc1 with one partition the memory use
seems to go down from 4gb to cca 1.5gb (seeing from top, so this is not
particularly accurate).
gcc/ChangeLog:
2020-10-22 Jan Hubicka <hubicka@ucw.cz>
* cgraph.c (cgraph_node::get_untransformed_body): Perform lazy
clone materialization.
* cgraph.h (cgraph_node::materialize_clone): Declare.
(symbol_table::materialize_all_clones): Remove.
* cgraphclones.c (cgraph_materialize_clone): Turn to ...
(cgraph_node::materialize_clone): .. this one; move here
dumping from symbol_table::materialize_all_clones.
(symbol_table::materialize_all_clones): Remove.
* cgraphunit.c (mark_functions_to_output): Clear stmt references.
(cgraph_node::expand): Initialize bitmaps early;
do not call execute_all_ipa_transforms if there are no transforms.
* ipa-inline-transform.c (save_inline_function_body): Fix formating.
(inline_transform): Materialize all clones before function is modified.
* ipa-param-manipulation.c (ipa_param_adjustments::modify_call):
Materialize clone if needed.
* ipa.c (class pass_materialize_all_clones): Remove.
(make_pass_materialize_all_clones): Remove.
* passes.c (execute_all_ipa_transforms): Materialize all clones.
* passes.def: Remove pass_materialize_all_clones.
* tree-pass.h (make_pass_materialize_all_clones): Remove.
* tree-ssa-structalias.c (ipa_pta_execute): Clear refs.
Diffstat (limited to 'gcc/cgraphunit.c')
| -rw-r--r-- | gcc/cgraphunit.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c index 05713c2..1e22627 100644 --- a/gcc/cgraphunit.c +++ b/gcc/cgraphunit.c @@ -1601,6 +1601,7 @@ mark_functions_to_output (void) FOR_EACH_FUNCTION (node) { tree decl = node->decl; + node->clear_stmts_in_references (); gcc_assert (!node->process || node->same_comdat_group); if (node->process) @@ -2274,6 +2275,9 @@ cgraph_node::expand (void) announce_function (decl); process = 0; gcc_assert (lowered); + + /* Initialize the default bitmap obstack. */ + bitmap_obstack_initialize (NULL); get_untransformed_body (); /* Generate RTL for the body of DECL. */ @@ -2282,9 +2286,6 @@ cgraph_node::expand (void) gcc_assert (symtab->global_info_ready); - /* Initialize the default bitmap obstack. */ - bitmap_obstack_initialize (NULL); - /* Initialize the RTL code for the function. */ saved_loc = input_location; input_location = DECL_SOURCE_LOCATION (decl); @@ -2298,7 +2299,8 @@ cgraph_node::expand (void) bitmap_obstack_initialize (®_obstack); /* FIXME, only at RTL generation*/ update_ssa (TODO_update_ssa_only_virtuals); - execute_all_ipa_transforms (false); + if (ipa_transforms_to_apply.exists ()) + execute_all_ipa_transforms (false); /* Perform all tree transforms and optimizations. */ |