21 lines
521 B
Rust
21 lines
521 B
Rust
//@ compile-flags: -Copt-level=3
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#![crate_type = "lib"]
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use std::mem::MaybeUninit;
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// We need to make sure len is at offset 0, otherwise codegen needs an extra instruction
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#[repr(C)]
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pub struct SmallVec<T> {
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pub len: u64,
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pub arr: [MaybeUninit<T>; 24],
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}
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// CHECK-LABEL: @uninit_arr_via_const
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#[no_mangle]
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pub fn uninit_arr_via_const() -> SmallVec<String> {
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// CHECK-NEXT: start:
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// CHECK-NEXT: store i64 0,
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// CHECK-NEXT: ret
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SmallVec { len: 0, arr: [const { MaybeUninit::uninit() }; 24] }
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}
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