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MCP #705: Provide the option -Csymbol-mangling-version=hashed -Z unstable-options to shorten symbol names by replacing them with a digest.

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Enrich test cases
This commit is contained in:
h1467792822
2023-12-05 12:42:57 +08:00
parent 7ffc697ce1
commit 6e53e66bd3
15 changed files with 211 additions and 49 deletions
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15
compiler/rustc_session/src/config.rs
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@@ -347,6 +347,7 @@ impl SwitchWithOptPath {
pub enum SymbolManglingVersion {
Legacy,
V0,
Hashed,
}
#[derive(Clone, Copy, Debug, PartialEq, Hash)]
@@ -2692,6 +2693,7 @@ pub fn build_session_options(early_dcx: &mut EarlyDiagCtxt, matches: &getopts::M
match cg.symbol_mangling_version {
// Stable values:
None | Some(SymbolManglingVersion::V0) => {}
// Unstable values:
Some(SymbolManglingVersion::Legacy) => {
if !unstable_opts.unstable_options {
@@ -2700,6 +2702,13 @@ pub fn build_session_options(early_dcx: &mut EarlyDiagCtxt, matches: &getopts::M
);
}
}
Some(SymbolManglingVersion::Hashed) => {
if !unstable_opts.unstable_options {
early_dcx.early_fatal(
"`-C symbol-mangling-version=hashed` requires `-Z unstable-options`",
);
}
}
}
// Check for unstable values of `-C instrument-coverage`.
@@ -2741,6 +2750,12 @@ pub fn build_session_options(early_dcx: &mut EarlyDiagCtxt, matches: &getopts::M
);
}
Some(SymbolManglingVersion::V0) => {}
Some(SymbolManglingVersion::Hashed) => {
early_dcx.early_warn(
"-C instrument-coverage requires symbol mangling version `v0`, \
but `-C symbol-mangling-version=hashed` was specified",
);
}
}
}