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Added ui tests for volatile and nearby intrinsics
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#![crate_type = "lib"] | ||
#![feature(core_intrinsics)] | ||
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use std::intrinsics::*; | ||
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pub unsafe fn test_volatile_order() { | ||
let mut a: Box<u8> = Box::new(0); | ||
// CHECK: load volatile | ||
let x = volatile_load(&*a); | ||
// CHECK: load volatile | ||
let x = volatile_load(&*a); | ||
// CHECK: store volatile | ||
volatile_store(&mut *a, 12); | ||
// CHECK: store volatile | ||
unaligned_volatile_store(&mut *a, 12); | ||
// CHECK: llvm.memset.p0i8 | ||
volatile_set_memory(&mut *a, 12, 1) | ||
} |
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// run-pass | ||
#![feature(core_intrinsics)] | ||
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use std::intrinsics::*; | ||
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fn main() { | ||
unsafe { | ||
assert_eq!(nearbyintf32(5.234f32), 5f32); | ||
assert_eq!(nearbyintf64(6.777f64), 7f64); | ||
} | ||
} |
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// run-pass | ||
#![feature(core_intrinsics)] | ||
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use std::intrinsics::*; | ||
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pub fn main() { | ||
unsafe { | ||
let mut x: Box<u8> = Box::new(0); | ||
let mut y: Box<u8> = Box::new(0); | ||
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// test volatile load | ||
assert_eq!(volatile_load(&*x), 0); | ||
*x = 1; | ||
assert_eq!(volatile_load(&*x), 1); | ||
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// test volatile store | ||
volatile_store(&mut *x, 2); | ||
assert_eq!(*x, 2); | ||
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// test volatile copy memory | ||
volatile_copy_memory(&mut *y, &*x, 1); | ||
assert_eq!(*y, 2); | ||
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// test volatile copy non-overlapping memory | ||
*x = 3; | ||
volatile_copy_nonoverlapping_memory(&mut *y, &*x, 1); | ||
assert_eq!(*y, 3); | ||
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// test volatile set memory | ||
volatile_set_memory(&mut *x, 4, 1); | ||
assert_eq!(*x, 4); | ||
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// test unaligned volatile load | ||
let arr: [u8; 3] = [1, 2, 3]; | ||
let ptr = arr[1..].as_ptr() as *const u16; | ||
assert_eq!(unaligned_volatile_load(ptr), u16::from_ne_bytes([arr[1], arr[2]])); | ||
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// test unaligned volatile store | ||
let ptr = arr[1..].as_ptr() as *mut u16; | ||
unaligned_volatile_store(ptr, 0); | ||
assert_eq!(arr, [1, 0, 0]); | ||
} | ||
} |