236 lines
7.3 KiB
Rust
236 lines
7.3 KiB
Rust
// run-pass
|
|
// Test that users are able to use stable mir APIs to retrieve information of the current crate
|
|
|
|
// ignore-stage1
|
|
// ignore-cross-compile
|
|
// ignore-remote
|
|
// edition: 2021
|
|
|
|
#![feature(rustc_private)]
|
|
#![feature(assert_matches)]
|
|
#![feature(control_flow_enum)]
|
|
|
|
extern crate rustc_hir;
|
|
extern crate rustc_middle;
|
|
extern crate rustc_smir;
|
|
extern crate stable_mir;
|
|
|
|
use rustc_hir::def::DefKind;
|
|
use rustc_middle::ty::TyCtxt;
|
|
use rustc_smir::rustc_internal;
|
|
|
|
use stable_mir::fold::Foldable;
|
|
use std::assert_matches::assert_matches;
|
|
use std::io::Write;
|
|
use std::ops::ControlFlow;
|
|
|
|
const CRATE_NAME: &str = "input";
|
|
|
|
/// This function uses the Stable MIR APIs to get information about the test crate.
|
|
fn test_stable_mir(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
|
|
// Get the local crate using stable_mir API.
|
|
let local = stable_mir::local_crate();
|
|
assert_eq!(&local.name, CRATE_NAME);
|
|
|
|
assert_eq!(stable_mir::entry_fn(), None);
|
|
|
|
// Find items in the local crate.
|
|
let items = stable_mir::all_local_items();
|
|
assert!(get_item(&items, (DefKind::Fn, "foo::bar")).is_some());
|
|
|
|
// Find the `std` crate.
|
|
assert!(stable_mir::find_crate("std").is_some());
|
|
|
|
let bar = get_item(&items, (DefKind::Fn, "bar")).unwrap();
|
|
let body = bar.body();
|
|
assert_eq!(body.locals.len(), 2);
|
|
assert_eq!(body.blocks.len(), 1);
|
|
let block = &body.blocks[0];
|
|
assert_eq!(block.statements.len(), 1);
|
|
match &block.statements[0] {
|
|
stable_mir::mir::Statement::Assign(..) => {}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
match &block.terminator {
|
|
stable_mir::mir::Terminator::Return => {}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
|
|
let foo_bar = get_item(&items, (DefKind::Fn, "foo_bar")).unwrap();
|
|
let body = foo_bar.body();
|
|
assert_eq!(body.locals.len(), 7);
|
|
assert_eq!(body.blocks.len(), 4);
|
|
let block = &body.blocks[0];
|
|
match &block.terminator {
|
|
stable_mir::mir::Terminator::Call { .. } => {}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
|
|
let types = get_item(&items, (DefKind::Fn, "types")).unwrap();
|
|
let body = types.body();
|
|
assert_eq!(body.locals.len(), 6);
|
|
assert_matches!(
|
|
body.locals[0].kind(),
|
|
stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Bool)
|
|
);
|
|
assert_matches!(
|
|
body.locals[1].kind(),
|
|
stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Bool)
|
|
);
|
|
assert_matches!(
|
|
body.locals[2].kind(),
|
|
stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Char)
|
|
);
|
|
assert_matches!(
|
|
body.locals[3].kind(),
|
|
stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Int(stable_mir::ty::IntTy::I32))
|
|
);
|
|
assert_matches!(
|
|
body.locals[4].kind(),
|
|
stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Uint(stable_mir::ty::UintTy::U64))
|
|
);
|
|
assert_matches!(
|
|
body.locals[5].kind(),
|
|
stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Float(
|
|
stable_mir::ty::FloatTy::F64
|
|
))
|
|
);
|
|
|
|
let drop = get_item(&items, (DefKind::Fn, "drop")).unwrap();
|
|
let body = drop.body();
|
|
assert_eq!(body.blocks.len(), 2);
|
|
let block = &body.blocks[0];
|
|
match &block.terminator {
|
|
stable_mir::mir::Terminator::Drop { .. } => {}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
|
|
let assert = get_item(&items, (DefKind::Fn, "assert")).unwrap();
|
|
let body = assert.body();
|
|
assert_eq!(body.blocks.len(), 2);
|
|
let block = &body.blocks[0];
|
|
match &block.terminator {
|
|
stable_mir::mir::Terminator::Assert { .. } => {}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
|
|
let monomorphic = get_item(&items, (DefKind::Fn, "monomorphic")).unwrap();
|
|
for block in monomorphic.body().blocks {
|
|
match &block.terminator {
|
|
stable_mir::mir::Terminator::Call { func, .. } => match func {
|
|
stable_mir::mir::Operand::Constant(c) => match &c.literal.literal {
|
|
stable_mir::ty::ConstantKind::Allocated(alloc) => {
|
|
assert!(alloc.bytes.is_empty());
|
|
match c.literal.ty.kind() {
|
|
stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::FnDef(
|
|
def,
|
|
mut args,
|
|
)) => {
|
|
let func = def.body();
|
|
match func.locals[1]
|
|
.fold(&mut args)
|
|
.continue_value()
|
|
.unwrap()
|
|
.kind()
|
|
{
|
|
stable_mir::ty::TyKind::RigidTy(
|
|
stable_mir::ty::RigidTy::Uint(_),
|
|
) => {}
|
|
stable_mir::ty::TyKind::RigidTy(
|
|
stable_mir::ty::RigidTy::Tuple(_),
|
|
) => {}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
}
|
|
other => panic!("{other:?}"),
|
|
},
|
|
other => panic!("{other:?}"),
|
|
},
|
|
stable_mir::mir::Terminator::Return => {}
|
|
other => panic!("{other:?}"),
|
|
}
|
|
}
|
|
|
|
let foo_const = get_item(&items, (DefKind::Const, "FOO")).unwrap();
|
|
// Ensure we don't panic trying to get the body of a constant.
|
|
foo_const.body();
|
|
|
|
ControlFlow::Continue(())
|
|
}
|
|
|
|
// Use internal API to find a function in a crate.
|
|
fn get_item<'a>(
|
|
items: &'a stable_mir::CrateItems,
|
|
item: (DefKind, &str),
|
|
) -> Option<&'a stable_mir::CrateItem> {
|
|
items.iter().find(|crate_item| {
|
|
crate_item.kind().to_string() == format!("{:?}", item.0) && crate_item.name() == item.1
|
|
})
|
|
}
|
|
|
|
/// This test will generate and analyze a dummy crate using the stable mir.
|
|
/// For that, it will first write the dummy crate into a file.
|
|
/// Then it will create a `StableMir` using custom arguments and then
|
|
/// it will run the compiler.
|
|
fn main() {
|
|
let path = "input.rs";
|
|
generate_input(&path).unwrap();
|
|
let args = vec![
|
|
"rustc".to_string(),
|
|
"--crate-type=lib".to_string(),
|
|
"--crate-name".to_string(),
|
|
CRATE_NAME.to_string(),
|
|
path.to_string(),
|
|
];
|
|
rustc_internal::StableMir::new(args, test_stable_mir).run().unwrap();
|
|
}
|
|
|
|
fn generate_input(path: &str) -> std::io::Result<()> {
|
|
let mut file = std::fs::File::create(path)?;
|
|
write!(
|
|
file,
|
|
r#"
|
|
pub const FOO: u32 = 1 + 2;
|
|
|
|
fn generic<T, const U: usize>(t: T) -> [(); U] {{
|
|
_ = t;
|
|
[(); U]
|
|
}}
|
|
|
|
pub fn monomorphic() {{
|
|
generic::<(), 5>(());
|
|
generic::<u32, 0>(45);
|
|
}}
|
|
|
|
mod foo {{
|
|
pub fn bar(i: i32) -> i64 {{
|
|
i as i64
|
|
}}
|
|
}}
|
|
|
|
pub fn bar(x: i32) -> i32 {{
|
|
x
|
|
}}
|
|
|
|
pub fn foo_bar(x: i32, y: i32) -> i64 {{
|
|
let x_64 = foo::bar(x);
|
|
let y_64 = foo::bar(y);
|
|
x_64.wrapping_add(y_64)
|
|
}}
|
|
|
|
pub fn types(b: bool, _: char, _: i32, _: u64, _: f64) -> bool {{
|
|
b
|
|
}}
|
|
|
|
pub fn drop(_: String) {{}}
|
|
|
|
pub fn assert(x: i32) -> i32 {{
|
|
x + 1
|
|
}}"#
|
|
)?;
|
|
Ok(())
|
|
}
|