rust/src/test/codegen/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]] = { {{.*}}readonly{{.*}} }
    #[ffi_pure] pub fn foo();
}
Add tests for `#[ffi_const]` and `#[ffi_pure]` function attributes Based on the work of gnzlbg <gonzalobg88@gmail.com>. 2020-04-13 17:21:19 -05:00			`// compile-flags: -C no-prepopulate-passes`
			`#![crate_type = "lib"]`
			`#![feature(ffi_pure)]`

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

Update tests for extern block linting 2020-09-01 16:12:52 -05:00			`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 2021-03-27 17:11:24 -05:00			`// CHECK-LABEL: declare{{.*}}void @foo()`
Add tests for `#[ffi_const]` and `#[ffi_pure]` function attributes Based on the work of gnzlbg <gonzalobg88@gmail.com>. 2020-04-13 17:21:19 -05:00			`// CHECK-SAME: [[ATTRS:#[0-9]+]]`
			`// CHECK-DAG: attributes [[ATTRS]] = { {{.}}readonly{{.}} }`
			`#[ffi_pure] pub fn foo();`
			`}`