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Add #[cfg(target_has_atomic)] to get atomic support for the current target

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This commit is contained in:
Amanieu d'Antras 2016-04-15 20:16:19 +01:00
parent 50909f2d50
commit 04835ea5ec
45 changed files with 90 additions and 10 deletions
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10
src/librustc/session/config.rs
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@ -695,6 +695,7 @@ pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
let os = &sess.target.target.target_os;
let env = &sess.target.target.target_env;
let vendor = &sess.target.target.target_vendor;
let max_atomic_width = sess.target.target.options.max_atomic_width;
let fam = if let Some(ref fam) = sess.target.target.options.target_family {
intern(fam)
@ -721,6 +722,15 @@ pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
if sess.target.target.options.has_elf_tls {
ret.push(attr::mk_word_item(InternedString::new("target_thread_local")));
}
for &i in &[8, 16, 32, 64, 128] {
if i <= max_atomic_width {
let s = i.to_string();
ret.push(mk(InternedString::new("target_has_atomic"), intern(&s)));
if &s == wordsz {
ret.push(mk(InternedString::new("target_has_atomic"), intern("ptr")));
}
}
}
if sess.opts.debug_assertions {
ret.push(attr::mk_word_item(InternedString::new("debug_assertions")));
}