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45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
//@ test-mir-pass: CopyProp
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#![feature(custom_mir, core_intrinsics)]
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#![allow(internal_features)]
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use std::intrinsics::mir::*;
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#[custom_mir(dialect = "runtime")]
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fn main() {
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mir! {
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// Both _3 and _5 are borrowed, check that we do not unify them, and that we do not
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// introduce a write to any of them.
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let _1;
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let _2;
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let _3;
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let _4;
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let _5;
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let _6;
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let _7;
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// CHECK: bb0: {
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{
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// CHECK-NEXT: _1 = &raw const _2;
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_1 = core::ptr::addr_of!(_2);
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// CHECK-NEXT: _3 = const 'b';
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_3 = 'b';
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// CHECK-NEXT: _5 = copy _3;
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_5 = _3;
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// CHECK-NEXT: _6 = &_3;
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_6 = &_3;
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_4 = _5;
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// CHECK-NEXT: (*_1) = copy (*_6);
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*_1 = *_6;
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// CHECK-NEXT: _6 = &_5;
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_6 = &_5;
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// CHECK-NEXT: _7 = dump_var::<char>(copy _5)
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Call(_7 = dump_var(_4), ReturnTo(bb1), UnwindUnreachable())
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}
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bb1 = { Return() }
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}
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}
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fn dump_var<T>(_: T) {}
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// EMIT_MIR write_to_borrowed.main.CopyProp.diff
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