mirror of https://github.com/rust-lang/rust
49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
// The `derive(PartialOrd)` for a newtype doesn't override `lt`/`le`/`gt`/`ge`.
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// This double-checks that the `Option<Ordering>` intermediate values used
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// in the operators for such a type all optimize away.
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//@ compile-flags: -C opt-level=1
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#![crate_type = "lib"]
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use std::cmp::Ordering;
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#[derive(PartialOrd, PartialEq)]
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pub struct Foo(u16);
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// CHECK-LABEL: @check_lt
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// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]])
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#[no_mangle]
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pub fn check_lt(a: Foo, b: Foo) -> bool {
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// CHECK: %[[R:.+]] = icmp ult i16 %[[A]], %[[B]]
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// CHECK-NEXT: ret i1 %[[R]]
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a < b
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}
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// CHECK-LABEL: @check_le
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// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]])
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#[no_mangle]
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pub fn check_le(a: Foo, b: Foo) -> bool {
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// CHECK: %[[R:.+]] = icmp ule i16 %[[A]], %[[B]]
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// CHECK-NEXT: ret i1 %[[R]]
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a <= b
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}
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// CHECK-LABEL: @check_gt
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// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]])
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#[no_mangle]
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pub fn check_gt(a: Foo, b: Foo) -> bool {
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// CHECK: %[[R:.+]] = icmp ugt i16 %[[A]], %[[B]]
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// CHECK-NEXT: ret i1 %[[R]]
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a > b
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}
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// CHECK-LABEL: @check_ge
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// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]])
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#[no_mangle]
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pub fn check_ge(a: Foo, b: Foo) -> bool {
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// CHECK: %[[R:.+]] = icmp uge i16 %[[A]], %[[B]]
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// CHECK-NEXT: ret i1 %[[R]]
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a >= b
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}
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