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)
11 lines
328 B
Rust
11 lines
328 B
Rust
// compile-flags: -C no-prepopulate-passes
|
|
#![crate_type = "lib"]
|
|
#![feature(ffi_returns_twice)]
|
|
|
|
pub fn bar() { unsafe { foo() } }
|
|
|
|
extern "C" {
|
|
// CHECK: declare{{( dso_local)?}} void @foo(){{.*}}[[ATTRS:#[0-9]+]]
|
|
// CHECK: attributes [[ATTRS]] = { {{.*}}returns_twice{{.*}} }
|
|
#[ffi_returns_twice] pub fn foo();
|
|
}
|