rust/tests/codegen/cffi/ffi-pure.rs

//@ compile-flags: -C no-prepopulate-passes
#![crate_type = "lib"]
#![feature(ffi_pure)]

pub fn bar() {
    unsafe { foo() }
}

extern "C" {
    // CHECK-LABEL: declare{{.*}}void @foo()
    // CHECK-SAME: [[ATTRS:#[0-9]+]]
    // CHECK-DAG: attributes [[ATTRS]] = { {{.*}}memory(read){{.*}} }
    #[unsafe(ffi_pure)]
    pub fn foo();
}
Add tests for `#[ffi_const]` and `#[ffi_pure]` function attributes Based on the work of gnzlbg <gonzalobg88@gmail.com>. 2020-04-14 00:21:19 +02:00			`//@ compile-flags: -C no-prepopulate-passes`
			`#![crate_type = "lib"]`
			`#![feature(ffi_pure)]`

Run rustfmt on `tests/codegen/`. Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`. 2024-05-29 14:11:20 +10:00			`pub fn bar() {`
			`unsafe { foo() }`
			`}`
Add tests for `#[ffi_const]` and `#[ffi_pure]` function attributes Based on the work of gnzlbg <gonzalobg88@gmail.com>. 2020-04-14 00:21:19 +02:00
Update tests for extern block linting 2020-09-01 17:12:52 -04:00			`extern "C" {`
Manually set dso_local when its valid to do so 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]: https://github.com/llvm/llvm-project/blob/3001d080c813da20b329303bf8f45451480e5905/clang/lib/CodeGen/CodeGenModule.cpp#L945-L1039 2021-03-28 00:11:24 +02:00			`// CHECK-LABEL: declare{{.*}}void @foo()`
Add tests for `#[ffi_const]` and `#[ffi_pure]` function attributes Based on the work of gnzlbg <gonzalobg88@gmail.com>. 2020-04-14 00:21:19 +02:00			`// CHECK-SAME: [[ATTRS:#[0-9]+]]`
Update the minimum external LLVM to 19 2025-04-02 12:08:01 -07:00			`// CHECK-DAG: attributes [[ATTRS]] = { {{.}}memory(read){{.}} }`
error on unsafe attributes in pre-2024 editions the `no_mangle`, `link_section` and `export_name` attributes are exceptions, and can still be used without an unsafe in earlier editions 2025-04-12 19:58:19 +02:00			`#[unsafe(ffi_pure)]`
Run rustfmt on `tests/codegen/`. Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`. 2024-05-29 14:11:20 +10:00			`pub fn foo();`
Add tests for `#[ffi_const]` and `#[ffi_pure]` function attributes Based on the work of gnzlbg <gonzalobg88@gmail.com>. 2020-04-14 00:21:19 +02:00			`}`