diff options
| author | Martin Liska <mliska@suse.cz> | 2018-11-09 16:04:52 +0100 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2018-11-09 15:04:52 +0000 |
| commit | 2e14744fcd7820033b91c9516e22eb42b02b5290 (patch) | |
| tree | cd0f6b1d8e87c8bebf1881f75790b1da936e3006 /gcc/ipa.c | |
| parent | 9ed3186036f25d9dd870cc2a02bfdf6fc31cde42 (diff) | |
| download | gcc-2e14744fcd7820033b91c9516e22eb42b02b5290.zip gcc-2e14744fcd7820033b91c9516e22eb42b02b5290.tar.gz gcc-2e14744fcd7820033b91c9516e22eb42b02b5290.tar.bz2 | |
Come up with -fipa-reference-addressable flag.
2018-11-09 Martin Liska <mliska@suse.cz>
* cgraph.h (ipa_discover_readonly_nonaddressable_vars): Rename
to ...
(ipa_discover_variable_flags): ... this.
* common.opt: Come up with new flag -fipa-reference-addressable.
* doc/invoke.texi: Document it.
* ipa-reference.c (propagate): Call the renamed fn.
* ipa-visibility.c (whole_program_function_and_variable_visibility):
Likewise.
* ipa.c (ipa_discover_readonly_nonaddressable_vars): Renamed to
...
(ipa_discover_variable_flags): ... this. Discover
non-addressable variables only with the newly added flag.
* opts.c: Enable the newly added flag with -O1 and higher
optimization level.
2018-11-09 Martin Liska <mliska@suse.cz>
* gcc.dg/tree-ssa/writeonly-2.c: New test.
From-SVN: r265969
Diffstat (limited to 'gcc/ipa.c')
| -rw-r--r-- | gcc/ipa.c | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -752,10 +752,10 @@ clear_addressable_bit (varpool_node *vnode, void *data ATTRIBUTE_UNUSED) return false; } -/* Discover variables that have no longer address taken or that are read only - and update their flags. +/* Discover variables that have no longer address taken, are read-only or + write-only and update their flags. - Return true when unreachable symbol removan should be done. + Return true when unreachable symbol removal should be done. FIXME: This can not be done in between gimplify and omp_expand since readonly flag plays role on what is shared and what is not. Currently we do @@ -764,8 +764,11 @@ clear_addressable_bit (varpool_node *vnode, void *data ATTRIBUTE_UNUSED) make sense to do it before early optimizations. */ bool -ipa_discover_readonly_nonaddressable_vars (void) +ipa_discover_variable_flags (void) { + if (!flag_ipa_reference_addressable) + return false; + bool remove_p = false; varpool_node *vnode; if (dump_file) |