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Support more intrinsics in mir interpreter

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This commit is contained in:
hkalbasi 2023-06-23 21:08:05 +03:30
parent 403433a355
commit 5eb4796d3d
6 changed files with 493 additions and 60 deletions
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134
crates/hir-ty/src/consteval/tests/intrinsics.rs
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@ -14,6 +14,66 @@ fn size_of() {
);
}
#[test]
fn size_of_val() {
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
struct X(i32, u8);
const GOAL: usize = size_of_val(&X(1, 2));
"#,
8,
);
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
const GOAL: usize = {
let x: &[i32] = &[1, 2, 3];
size_of_val(x)
};
"#,
12,
);
check_number(
r#"
//- minicore: coerce_unsized, fmt, builtin_impls
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
const GOAL: usize = {
let x: &i16 = &5;
let y: &dyn core::fmt::Debug = x;
let z: &dyn core::fmt::Debug = &y;
size_of_val(x) + size_of_val(y) * 10 + size_of_val(z) * 100
};
"#,
1622,
);
check_number(
r#"
//- minicore: coerce_unsized
extern "rust-intrinsic" {
pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
}
const GOAL: usize = {
size_of_val("salam")
};
"#,
5,
);
}
#[test]
fn transmute() {
check_number(
@ -69,7 +129,7 @@ fn wrapping_add() {
}
#[test]
fn saturating_add() {
fn saturating() {
check_number(
r#"
extern "rust-intrinsic" {
@ -80,6 +140,16 @@ fn saturating_add() {
"#,
255,
);
check_number(
r#"
extern "rust-intrinsic" {
pub fn saturating_sub<T>(a: T, b: T) -> T;
}
const GOAL: bool = saturating_sub(5u8, 7) == 0 && saturating_sub(8u8, 4) == 4;
"#,
1,
);
check_number(
r#"
extern "rust-intrinsic" {
@ -160,6 +230,24 @@ fn needs_drop() {
);
}
#[test]
fn discriminant_value() {
check_number(
r#"
//- minicore: discriminant, option
use core::marker::DiscriminantKind;
extern "rust-intrinsic" {
pub fn discriminant_value<T>(v: &T) -> <T as DiscriminantKind>::Discriminant;
}
const GOAL: bool = {
discriminant_value(&Some(2i32)) == discriminant_value(&Some(5i32))
&& discriminant_value(&Some(2i32)) != discriminant_value(&None::<i32>)
};
"#,
1,
);
}
#[test]
fn likely() {
check_number(
@ -376,3 +464,47 @@ fn cttz() {
3,
);
}
#[test]
fn rotate() {
check_number(
r#"
extern "rust-intrinsic" {
pub fn rotate_left<T: Copy>(x: T, y: T) -> T;
}
const GOAL: i64 = rotate_left(0xaa00000000006e1i64, 12);
"#,
0x6e10aa,
);
check_number(
r#"
extern "rust-intrinsic" {
pub fn rotate_right<T: Copy>(x: T, y: T) -> T;
}
const GOAL: i64 = rotate_right(0x6e10aa, 12);
"#,
0xaa00000000006e1,
);
check_number(
r#"
extern "rust-intrinsic" {
pub fn rotate_left<T: Copy>(x: T, y: T) -> T;
}
const GOAL: i8 = rotate_left(129, 2);
"#,
6,
);
check_number(
r#"
extern "rust-intrinsic" {
pub fn rotate_right<T: Copy>(x: T, y: T) -> T;
}
const GOAL: i32 = rotate_right(10006016, 1020315);
"#,
320192512,
);
}