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Revert "Auto merge of #113923 - DianQK:restore-no-builtins-lto, r=pnkfelix"

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This reverts commit 8c2b577217, reversing
changes made to 9cf18e98f8.
This commit is contained in:
DianQK 2024-01-12 18:23:04 +08:00
parent 6d29eac04b
commit aa874c5513
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GPG key ID: 46BDB1AC96C48912
16 changed files with 89 additions and 133 deletions
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8
compiler/rustc_codegen_ssa/src/base.rs
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@ -859,6 +859,7 @@ impl CrateInfo {
local_crate_name,
compiler_builtins,
profiler_runtime: None,
is_no_builtins: Default::default(),
native_libraries: Default::default(),
used_libraries: tcx.native_libraries(LOCAL_CRATE).iter().map(Into::into).collect(),
crate_name: Default::default(),
@ -885,6 +886,9 @@ impl CrateInfo {
if tcx.is_profiler_runtime(cnum) {
info.profiler_runtime = Some(cnum);
}
if tcx.is_no_builtins(cnum) {
info.is_no_builtins.insert(cnum);
}
}
// Handle circular dependencies in the standard library.
@ -892,7 +896,9 @@ impl CrateInfo {
// If global LTO is enabled then almost everything (*) is glued into a single object file,
// so this logic is not necessary and can cause issues on some targets (due to weak lang
// item symbols being "privatized" to that object file), so we disable it.
// (*) Native libs are not glued, and we assume that they cannot define weak lang items.
// (*) Native libs, and `#[compiler_builtins]` and `#[no_builtins]` crates are not glued,
// and we assume that they cannot define weak lang items. This is not currently enforced
// by the compiler, but that's ok because all this stuff is unstable anyway.
let target = &tcx.sess.target;
if !are_upstream_rust_objects_already_included(tcx.sess) {
let missing_weak_lang_items: FxHashSet<Symbol> = info