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| author | Torsten Duwe <duwe@suse.de> | 2017-07-25 14:16:10 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-07-25 14:16:10 +0000 |
| commit | 417ca0117a1a9a8aaf5bc5ca530adfd68cb00399 (patch) | |
| tree | c8993d80cd0cc0675b2677e7902c261e0625dd63 /gcc/lto/lto-lang.c | |
| parent | 774cccdc1a36493ae6925148c08dfbdcb2789e0c (diff) | |
| download | gcc-417ca0117a1a9a8aaf5bc5ca530adfd68cb00399.zip gcc-417ca0117a1a9a8aaf5bc5ca530adfd68cb00399.tar.gz gcc-417ca0117a1a9a8aaf5bc5ca530adfd68cb00399.tar.bz2 | |
c-attribs.c (c_common_attribute_table): Add entry for "patchable_function_entry".
2017-07-07 Torsten Duwe <duwe@suse.de>
c-family/
* c-attribs.c (c_common_attribute_table): Add entry for
"patchable_function_entry".
lto/
* lto-lang.c (lto_attribute_table): Add entry for
"patchable_function_entry".
* common.opt: Introduce -fpatchable-function-entry
command line option, and its variables function_entry_patch_area_size
and function_entry_patch_area_start.
* opts.c (common_handle_option): Add -fpatchable_function_entry_ case,
including a two-value parser.
* target.def (print_patchable_function_entry): New target hook.
* targhooks.h (default_print_patchable_function_entry): New function.
* targhooks.c (default_print_patchable_function_entry): Likewise.
* toplev.c (process_options): Switch off IPA-RA if
patchable function entries are being generated.
* varasm.c (assemble_start_function): Look at the
patchable-function-entry command line switch and current
function attributes and maybe generate NOP instructions by
calling the print_patchable_function_entry hook.
* doc/extend.texi: Document patchable_function_entry attribute.
* doc/invoke.texi: Document -fpatchable_function_entry
command line option.
* doc/tm.texi.in (TARGET_ASM_PRINT_PATCHABLE_FUNCTION_ENTRY):
New target hook.
* doc/tm.texi: Re-generate.
* c-c++-common/patchable_function_entry-default.c: New test.
* c-c++-common/patchable_function_entry-decl.c: Likewise.
* c-c++-common/patchable_function_entry-definition.c: Likewise.
From-SVN: r250521
Diffstat (limited to 'gcc/lto/lto-lang.c')
| -rw-r--r-- | gcc/lto/lto-lang.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/lto/lto-lang.c b/gcc/lto/lto-lang.c index 5893517..6e9a138 100644 --- a/gcc/lto/lto-lang.c +++ b/gcc/lto/lto-lang.c @@ -48,6 +48,8 @@ static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *); static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *); static tree handle_transaction_pure_attribute (tree *, tree, tree, int, bool *); static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *); +static tree handle_patchable_function_entry_attribute (tree *, tree, tree, + int, bool *); static tree ignore_attribute (tree *, tree, tree, int, bool *); static tree handle_format_attribute (tree *, tree, tree, int, bool *); @@ -76,6 +78,9 @@ const struct attribute_spec lto_attribute_table[] = handle_nonnull_attribute, false }, { "nothrow", 0, 0, true, false, false, handle_nothrow_attribute, false }, + { "patchable_function_entry", 1, 2, true, false, false, + handle_patchable_function_entry_attribute, + false }, { "returns_twice", 0, 0, true, false, false, handle_returns_twice_attribute, false }, { "sentinel", 0, 1, false, true, true, @@ -473,6 +478,13 @@ handle_returns_twice_attribute (tree *node, tree ARG_UNUSED (name), return NULL_TREE; } +static tree +handle_patchable_function_entry_attribute (tree *, tree, tree, int, bool *) +{ + /* Nothing to be done here. */ + return NULL_TREE; +} + /* Ignore the given attribute. Used when this attribute may be usefully overridden by the target, but is not used generically. */ |