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https://github.com/rust-lang/rust.git
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Scott McMurray
68 lines
2.2 KiB
Rust
68 lines
2.2 KiB
Rust
//@ revisions: RAW OPT
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//@ compile-flags: -C opt-level=z -C panic=abort
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//@[RAW] compile-flags: -C no-prepopulate-passes -Z inline-mir
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#![crate_type = "lib"]
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// Ensure all the different array drop_glue functions just delegate to the slice one,
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// rather than emitting two loops in each of the three.
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// When this test was first written, the array drop glues came out in the
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// seemingly-arbitrary order of 42, then 7, then 13, so to avoid potential
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// fragility from that changing we don't check any particular order.
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// RAW: ; core::ptr::drop_glue::<[array_drop_glue::NeedsDrop; [[N:7|13|42]]]>
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// RAW-NEXT: inlinehint
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// RAW: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop]>
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// RAW-NEXT: noundef [[N]])
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// RAW: }
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// RAW: ; core::ptr::drop_glue::<[array_drop_glue::NeedsDrop; [[N:7|13|42]]]>
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// RAW-NEXT: inlinehint
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// RAW: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop]>
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// RAW-NEXT: noundef [[N]])
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// RAW: }
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// RAW: ; core::ptr::drop_glue::<[array_drop_glue::NeedsDrop; [[N:7|13|42]]]>
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// RAW-NEXT: inlinehint
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// RAW: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop]>
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// RAW-NEXT: noundef [[N]])
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// RAW: }
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// CHECK-LABEL: ; core::ptr::drop_glue::<[array_drop_glue::NeedsDrop]>
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// CHECK-NOT: inlinehint
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// OPT: add nuw nsw {{.+}} 1
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// CHECK: }
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#[no_mangle]
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// CHECK-LABEL: @drop_arrays
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pub fn drop_arrays(x: [NeedsDrop; 7], y: [NeedsDrop; 13], z: [NeedsDrop; 42]) {
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// I don't remember the parameter drop order, so write out the order the test expects.
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// RAW: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop; 7]>
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// OPT: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop]>
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// OPT-NEXT: noundef 7)
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drop(x);
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// RAW: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop; 13]>
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// OPT: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop]>
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// OPT-NEXT: noundef 13)
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drop(y);
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// RAW: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop; 42]>
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// OPT: call core::ptr::drop_glue::<[array_drop_glue::NeedsDrop]>
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// OPT-NEXT: noundef 42)
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drop(z);
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}
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struct NeedsDrop(u32);
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impl Drop for NeedsDrop {
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#[inline]
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fn drop(&mut self) {
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do_the_drop(self);
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}
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}
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unsafe extern "Rust" {
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safe fn do_the_drop(_: &mut NeedsDrop);
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}
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