diff options
| author | Jason Merrill <jason@redhat.com> | 2013-01-19 05:25:25 +0000 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2013-01-19 05:25:25 +0000 |
| commit | 4dc6a9991696ad67413d8b6d221c0e6334ea9d09 (patch) | |
| tree | 6f07da7f6452368c46a7fccdd8d5a008127dbe83 /gcc/c-family | |
| parent | ec465c1c01bbe0391c1c07e9a9b191328adb5859 (diff) | |
PR target/54908
c-family/
* c.opt (-fextern-tls-init): New.
* c-opts.c (c_common_post_options): Handle it.
cp/
* decl2.c (get_local_tls_init_fn): New.
(get_tls_init_fn): Handle flag_extern_tls_init. Don't bother
with aliases for internal variables. Don't use weakrefs if
the variable needs destruction.
(generate_tls_wrapper): Mark the wrapper as const if no
initialization is needed.
(handle_tls_init): Don't require aliases.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@195310 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/c-family')
| -rw-r--r-- | gcc/c-family/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/c-family/c-opts.c | 14 | ||||
| -rw-r--r-- | gcc/c-family/c.opt | 3 |
3 files changed, 23 insertions, 0 deletions
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog index 778be4b5395..d4f989be630 100644 --- a/gcc/c-family/ChangeLog +++ b/gcc/c-family/ChangeLog @@ -1,3 +1,9 @@ +2013-01-18 Jason Merrill <jason@redhat.com> + + PR target/54908 + * c.opt (-fextern-tls-init): New. + * c-opts.c (c_common_post_options): Handle it. + 2013-01-09 Jakub Jelinek <jakub@redhat.com> PR c/48418 diff --git a/gcc/c-family/c-opts.c b/gcc/c-family/c-opts.c index 3fabb36faff..1a922a81c35 100644 --- a/gcc/c-family/c-opts.c +++ b/gcc/c-family/c-opts.c @@ -901,6 +901,20 @@ c_common_post_options (const char **pfilename) else if (warn_narrowing == -1) warn_narrowing = 0; + if (flag_extern_tls_init) + { +#if !defined (ASM_OUTPUT_DEF) || !SUPPORTS_WEAK + /* Lazy TLS initialization for a variable in another TU requires + alias and weak reference support. */ + if (flag_extern_tls_init > 0) + sorry ("external TLS initialization functions not supported " + "on this target"); + flag_extern_tls_init = 0; +#else + flag_extern_tls_init = 1; +#endif + } + if (flag_preprocess_only) { /* Open the output now. We must do so even if flag_no_output is diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt index 187f3befc18..10ae84dbb24 100644 --- a/gcc/c-family/c.opt +++ b/gcc/c-family/c.opt @@ -913,6 +913,9 @@ finput-charset= C ObjC C++ ObjC++ Joined RejectNegative -finput-charset=<cset> Specify the default character set for source files +fextern-tls-init +C++ ObjC++ Var(flag_extern_tls_init) Init(-1) +Support dynamic initialization of thread-local variables in a different translation unit fexternal-templates C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |