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Support new #[rustc_intrinsic] attribute and fallback bodies

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This commit is contained in:
Lukas Wirth 2024-11-03 16:29:35 +01:00
parent 78f3112626
commit 36d68c5d0f
9 changed files with 143 additions and 174 deletions
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97
crates/hir-ty/src/consteval/tests/intrinsics.rs
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@ -4,9 +4,8 @@ use super::*;
fn size_of() {
check_number(
r#"
extern "rust-intrinsic" {
pub fn size_of<T>() -> usize;
}
#[rustc_intrinsic]
pub fn size_of<T>() -> usize;
const GOAL: usize = size_of::<i32>();
"#,
@ -19,9 +18,8 @@ fn size_of_val() {
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
struct X(i32, u8);
@ -32,9 +30,8 @@ fn size_of_val() {
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
const GOAL: usize = {
let it: &[i32] = &[1, 2, 3];
@ -48,9 +45,8 @@ fn size_of_val() {
//- minicore: coerce_unsized, transmute
use core::mem::transmute;
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
struct X {
x: i64,
@ -70,9 +66,8 @@ fn size_of_val() {
//- minicore: coerce_unsized, transmute
use core::mem::transmute;
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
struct X {
x: i32,
@ -90,9 +85,8 @@ fn size_of_val() {
check_number(
r#"
//- minicore: coerce_unsized, fmt, builtin_impls, dispatch_from_dyn
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
const GOAL: usize = {
let x: &i16 = &5;
@ -106,9 +100,8 @@ fn size_of_val() {
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
const GOAL: usize = {
size_of_val("salam")
@ -123,9 +116,8 @@ fn min_align_of_val() {
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn min_align_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn min_align_of_val<T: ?Sized>(_: *const T) -> usize;
struct X(i32, u8);
@ -136,9 +128,8 @@ fn min_align_of_val() {
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn min_align_of_val<T: ?Sized>(_: *const T) -> usize;
}
#[rustc_intrinsic]
pub fn min_align_of_val<T: ?Sized>(_: *const T) -> usize;
const GOAL: usize = {
let x: &[i32] = &[1, 2, 3];
@ -153,9 +144,8 @@ fn min_align_of_val() {
fn type_name() {
check_str(
r#"
extern "rust-intrinsic" {
pub fn type_name<T: ?Sized>() -> &'static str;
}
#[rustc_intrinsic]
pub fn type_name<T: ?Sized>() -> &'static str;
const GOAL: &str = type_name::<i32>();
"#,
@ -163,9 +153,8 @@ fn type_name() {
);
check_str(
r#"
extern "rust-intrinsic" {
pub fn type_name<T: ?Sized>() -> &'static str;
}
#[rustc_intrinsic]
pub fn type_name<T: ?Sized>() -> &'static str;
mod mod1 {
pub mod mod2 {
@ -183,9 +172,8 @@ fn type_name() {
fn transmute() {
check_number(
r#"
extern "rust-intrinsic" {
pub fn transmute<T, U>(e: T) -> U;
}
#[rustc_intrinsic]
pub fn transmute<T, U>(e: T) -> U;
const GOAL: i32 = transmute((1i16, 1i16));
"#,
@ -197,10 +185,10 @@ fn transmute() {
fn read_via_copy() {
check_number(
r#"
extern "rust-intrinsic" {
pub fn read_via_copy<T>(e: *const T) -> T;
pub fn volatile_load<T>(e: *const T) -> T;
}
#[rustc_intrinsic]
pub fn read_via_copy<T>(e: *const T) -> T;
#[rustc_intrinsic]
pub fn volatile_load<T>(e: *const T) -> T;
const GOAL: i32 = {
let x = 2;
@ -399,9 +387,14 @@ fn discriminant_value() {
fn likely() {
check_number(
r#"
extern "rust-intrinsic" {
pub fn likely(b: bool) -> bool;
pub fn unlikely(b: bool) -> bool;
#[rustc_intrinsic]
pub const fn likely(b: bool) -> bool {
b
}
#[rustc_intrinsic]
pub const fn unlikely(b: bool) -> bool {
b
}
const GOAL: bool = likely(true) && unlikely(true) && !likely(false) && !unlikely(false);
@ -704,9 +697,8 @@ fn rotate() {
);
check_number(
r#"
extern "rust-intrinsic" {
pub fn rotate_right<T: Copy>(x: T, y: T) -> T;
}
#[rustc_intrinsic]
pub fn rotate_right<T: Copy>(x: T, y: T) -> T;
const GOAL: i32 = rotate_right(10006016, 1020315);
"#,
@ -721,9 +713,8 @@ fn simd() {
pub struct i8x16(
i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,
);
extern "platform-intrinsic" {
pub fn simd_bitmask<T, U>(x: T) -> U;
}
#[rustc_intrinsic]
pub fn simd_bitmask<T, U>(x: T) -> U;
const GOAL: u16 = simd_bitmask(i8x16(
0, 1, 0, 0, 2, 255, 100, 0, 50, 0, 1, 1, 0, 0, 0, 0
));
@ -735,10 +726,10 @@ fn simd() {
pub struct i8x16(
i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,i8,
);
extern "platform-intrinsic" {
pub fn simd_lt<T, U>(x: T, y: T) -> U;
pub fn simd_bitmask<T, U>(x: T) -> U;
}
#[rustc_intrinsic]
pub fn simd_lt<T, U>(x: T, y: T) -> U;
#[rustc_intrinsic]
pub fn simd_bitmask<T, U>(x: T) -> U;
const GOAL: u16 = simd_bitmask(simd_lt::<i8x16, i8x16>(
i8x16(
-105, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10