mirror of https://github.com/rust-lang/rust
19 lines
527 B
Rust
19 lines
527 B
Rust
// skip-filecheck
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//@ compile-flags: -O -C debuginfo=0 -Zmir-opt-level=2 -Zinline-mir
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//@ ignore-debug: precondition checks on ptr::read/write are under cfg(debug_assertions)
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// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
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#![crate_type = "lib"]
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// EMIT_MIR mem_replace.manual_replace.PreCodegen.after.mir
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pub fn manual_replace(r: &mut u32, v: u32) -> u32 {
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let temp = *r;
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*r = v;
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temp
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}
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// EMIT_MIR mem_replace.mem_replace.PreCodegen.after.mir
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pub fn mem_replace(r: &mut u32, v: u32) -> u32 {
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std::mem::replace(r, v)
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}
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