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Auto merge of #76830 - Artoria2e5:tune, r=nagisa

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Pass tune-cpu to LLVM

I think this is how it should work...

See https://internals.rust-lang.org/t/expose-tune-cpu-from-llvm/13088 for the background. Or the documentation diff.
This commit is contained in:
bors
2020-10-13 02:49:00 +00:00
parent afb4514c09 a35a93f09c
commit f54072bb81
9 changed files with 80 additions and 8 deletions
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22
compiler/rustc_codegen_llvm/src/llvm_util.rs
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@@ -202,11 +202,7 @@ pub(crate) fn print(req: PrintRequest, sess: &Session) {
}
}
pub fn target_cpu(sess: &Session) -> &str {
let name = match sess.opts.cg.target_cpu {
Some(ref s) => &**s,
None => &*sess.target.target.options.cpu,
};
fn handle_native(name: &str) -> &str {
if name != "native" {
return name;
}
@@ -217,3 +213,19 @@ pub fn target_cpu(sess: &Session) -> &str {
str::from_utf8(slice::from_raw_parts(ptr as *const u8, len)).unwrap()
}
}
pub fn target_cpu(sess: &Session) -> &str {
let name = match sess.opts.cg.target_cpu {
Some(ref s) => &**s,
None => &*sess.target.target.options.cpu,
};
handle_native(name)
}
pub fn tune_cpu(sess: &Session) -> Option<&str> {
match sess.opts.debugging_opts.tune_cpu {
Some(ref s) => Some(handle_native(&**s)),
None => None,
}
}