bjoernager/rust
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switch to using a target property to control plt default

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This commit is contained in:
Augie Fackler 2023-06-07 20:18:20 -04:00
parent dfc5218dc8
commit 34d0cffcdf
28 changed files with 35 additions and 10 deletions
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10
compiler/rustc_session/src/session.rs
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@ -1009,11 +1009,11 @@ impl Session {
self.edition().rust_2024()
}
/// Returns `true` if we cannot skip the PLT for shared library calls.
/// Returns `true` if we should use the PLT for shared library calls.
pub fn needs_plt(&self) -> bool {
// Check if the current target usually needs PLT to be enabled.
// Check if the current target usually wants PLT to be enabled.
// The user can use the command line flag to override it.
let needs_plt = self.target.arch != "x86_64";
let want_plt = self.target.plt_by_default;
let dbg_opts = &self.opts.unstable_opts;
@ -1025,8 +1025,8 @@ impl Session {
let full_relro = RelroLevel::Full == relro_level;
// If user didn't explicitly forced us to use / skip the PLT,
// then try to skip it where possible.
dbg_opts.plt.unwrap_or(needs_plt || !full_relro)
// then use it unless the target doesn't want it by default or the full relro forces it on.
dbg_opts.plt.unwrap_or(want_plt || !full_relro)
}
/// Checks if LLVM lifetime markers should be emitted.