dc44d41b98
These are already removed in the normal optimization pipeline - so this should slightly improve codegen performance, as these cleanup blocks are known to hurt LLVM. This un-regresses and is therefore a fix for #47442. However, the reporter of that issue should try using `-C panic=abort` instead of carefully avoiding panics.
32 lines
788 B
Rust
32 lines
788 B
Rust
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// check that we don't emit unneeded `resume` cleanup blocks for every
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// destructor.
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// CHECK-NOT: Unwind
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#![feature(test)]
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#![crate_type="rlib"]
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extern crate test;
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struct Foo {}
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impl Drop for Foo {
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fn drop(&mut self) {
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test::black_box(());
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}
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}
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#[no_mangle]
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pub fn foo() {
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let _foo = Foo {};
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}
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