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Add dontthrow attribute to most libc functions

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This will help C++ code that uses exceptions to be tinier. For example,
this change shaves away 1000 lines of assembly code from LLVM's libcxx,
which is 0.7% of all assembly instructions in the entire library.
This commit is contained in:
Justine Tunney 2024-01-09 01:26:03 -08:00
parent cb19e172da
commit eeb20775d2
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GPG key ID: BE714B4575D6E328
103 changed files with 1455 additions and 1456 deletions
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34
libc/thread/posixthread.internal.h
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@ -97,24 +97,24 @@ extern struct Dll *_pthread_list;
extern struct PosixThread _pthread_static;
extern _Atomic(pthread_key_dtor) _pthread_key_dtor[PTHREAD_KEYS_MAX];
int _pthread_atfork(atfork_f, atfork_f, atfork_f);
int _pthread_reschedule(struct PosixThread *);
int _pthread_atfork(atfork_f, atfork_f, atfork_f) libcesque;
int _pthread_reschedule(struct PosixThread *) libcesque;
int _pthread_setschedparam_freebsd(int, int, const struct sched_param *);
int _pthread_tid(struct PosixThread *);
intptr_t _pthread_syshand(struct PosixThread *);
long _pthread_cancel_ack(void);
void _pthread_decimate(void);
void _pthread_free(struct PosixThread *, bool);
void _pthread_lock(void);
void _pthread_onfork_child(void);
void _pthread_onfork_parent(void);
void _pthread_onfork_prepare(void);
void _pthread_ungarbage(void);
void _pthread_unkey(struct CosmoTib *);
void _pthread_unlock(void);
void _pthread_unref(struct PosixThread *);
void _pthread_unwind(struct PosixThread *);
void _pthread_zombify(struct PosixThread *);
int _pthread_tid(struct PosixThread *) libcesque;
intptr_t _pthread_syshand(struct PosixThread *) libcesque;
long _pthread_cancel_ack(void) libcesque;
void _pthread_decimate(void) libcesque;
void _pthread_free(struct PosixThread *, bool) libcesque;
void _pthread_lock(void) libcesque;
void _pthread_onfork_child(void) libcesque;
void _pthread_onfork_parent(void) libcesque;
void _pthread_onfork_prepare(void) libcesque;
void _pthread_ungarbage(void) libcesque;
void _pthread_unkey(struct CosmoTib *) libcesque;
void _pthread_unlock(void) libcesque;
void _pthread_unref(struct PosixThread *) libcesque;
void _pthread_unwind(struct PosixThread *) libcesque;
void _pthread_zombify(struct PosixThread *) libcesque;
forceinline pureconst struct PosixThread *_pthread_self(void) {
return (struct PosixThread *)__get_tls()->tib_pthread;