https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121352
Bug ID: 121352
Summary: tls_model attribute documentation needs update
Product: gcc
Version: 13.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
GCC manual has
‘tls_model ("TLS_MODEL")’
The ‘tls_model’ attribute sets thread-local storage model (*note
Thread-Local::) of a particular ‘__thread’ variable, overriding
‘-ftls-model=’ command-line switch on a per-variable basis. The
TLS_MODEL argument should be one of ‘global-dynamic’,
‘local-dynamic’, ‘initial-exec’ or ‘local-exec’.
But after r13-3416-g1d561e1851c466:
ipa-visibility: Optimize TLS access [PR99619]
Fix PR99619, which asks to optimize TLS model based on visibility.
The fix is implemented as an IPA optimization: this allows to take
optimized visibility status into account (as well as avoid modifying
all language frontends).
GCC can optimize the TLS access model. tls_model attribute specifies
the weakest access model.
