2f000a78bf
This should have no real effect in most cases, as e.g. `hidden`
visibility already implies `dso_local` (or at least LLVM IR does not
preserve the `dso_local` setting if the item is already `hidden`), but
it should fix `-Crelocation-model=static` and improve codegen in
executables.
Note that this PR does not exhaustively port the logic in [clang]. Only
the obviously correct portion and what is necessary to fix a regression
from LLVM 12 that relates to `-Crelocation_model=static`.
Fixes #83335
[clang]: 3001d080c8/clang/lib/CodeGen/CodeGenModule.cpp (L945-L1039)
22 lines
366 B
Rust
22 lines
366 B
Rust
// no-system-llvm
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// compile-flags: -O
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#![crate_type="lib"]
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struct A;
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impl Drop for A {
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fn drop(&mut self) {
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extern "C" { fn foo(); }
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unsafe { foo(); }
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}
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}
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#[no_mangle]
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pub fn a(a: Box<i32>) {
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// CHECK-LABEL: define{{.*}}void @a
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// CHECK: call void @__rust_dealloc
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// CHECK-NEXT: call void @foo
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let _a = A;
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drop(a);
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}
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