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rust_for_linux: -Zregparm=<N> commandline flag for X86 (#116972)

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This commit is contained in:
Andrew Zhogin
2024-09-16 22:14:35 +07:00
parent a0c2aba29a
commit b3ae64d24f
20 changed files with 436 additions and 53 deletions
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9
compiler/rustc_session/src/session.rs
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@@ -1337,6 +1337,15 @@ fn validate_commandline_args_with_session_available(sess: &Session) {
}
}
if let Some(regparm) = sess.opts.unstable_opts.regparm {
if regparm > 3 {
sess.dcx().emit_err(errors::UnsupportedRegparm { regparm });
}
if sess.target.arch != "x86" {
sess.dcx().emit_err(errors::UnsupportedRegparmArch);
}
}
// The code model check applies to `thunk` and `thunk-extern`, but not `thunk-inline`, so it is
// kept as a `match` to force a change if new ones are added, even if we currently only support
// `thunk-extern` like Clang.