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Fix duplicate arcinner_layout_for_value_layout calls

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marc0246 2023-05-16 08:53:05 +02:00
parent 8006510ab0
commit 2a466466c7
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2 changed files with 47 additions and 6 deletions
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28
tests/codegen/issues/issue-111603.rs Normal file
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@ -0,0 +1,28 @@
// compile-flags: -O
#![crate_type = "lib"]
#![feature(get_mut_unchecked, new_uninit)]
use std::sync::Arc;
// CHECK-LABEL: @new_uninit
#[no_mangle]
pub fn new_uninit(x: u64) -> Arc<[u64; 1000]> {
// CHECK: call alloc::sync::arcinner_layout_for_value_layout
// CHECK-NOT: call alloc::sync::arcinner_layout_for_value_layout
let mut arc = Arc::new_uninit();
unsafe { Arc::get_mut_unchecked(&mut arc) }.write([x; 1000]);
unsafe { arc.assume_init() }
}
// CHECK-LABEL: @new_uninit_slice
#[no_mangle]
pub fn new_uninit_slice(x: u64) -> Arc<[u64]> {
// CHECK: call alloc::sync::arcinner_layout_for_value_layout
// CHECK-NOT: call alloc::sync::arcinner_layout_for_value_layout
let mut arc = Arc::new_uninit_slice(1000);
for elem in unsafe { Arc::get_mut_unchecked(&mut arc) } {
elem.write(x);
}
unsafe { arc.assume_init() }
}