30 lines
492 B
Rust
30 lines
492 B
Rust
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// Test that llvm generates `memcpy` for moving a value
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// inside a function and moving an argument.
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struct Foo {
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x: Vec<i32>,
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}
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#[inline(never)]
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#[no_mangle]
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// CHECK: memcpy
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fn interior(x: Vec<i32>) -> Vec<i32> {
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let Foo { x } = Foo { x: x };
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x
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}
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#[inline(never)]
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#[no_mangle]
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// CHECK: memcpy
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fn exterior(x: Vec<i32>) -> Vec<i32> {
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x
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}
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fn main() {
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let x = interior(Vec::new());
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println!("{:?}", x);
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let x = exterior(Vec::new());
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println!("{:?}", x);
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}
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