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62 lines
2.2 KiB
Rust
62 lines
2.2 KiB
Rust
//@ compile-flags: -C opt-level=1
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//@ min-llvm-version: 20
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// The `derive(PartialOrd)` for a 2-field type 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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#![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(i32, u32);
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// CHECK-LABEL: @check_lt(
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// CHECK-SAME: i32{{.+}}%[[A0:.+]], i32{{.+}}%[[A1:.+]], i32{{.+}}%[[B0:.+]], i32{{.+}}%[[B1:.+]])
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#[no_mangle]
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pub fn check_lt(a: Foo, b: Foo) -> bool {
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// CHECK-DAG: %[[EQ:.+]] = icmp eq i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R0:.+]] = icmp slt i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R1:.+]] = icmp ult i32 %[[A1]], %[[B1]]
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// CHECK: %[[R:.+]] = select i1 %[[EQ]], i1 %[[R1]], i1 %[[R0]]
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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: i32{{.+}}%[[A0:.+]], i32{{.+}}%[[A1:.+]], i32{{.+}}%[[B0:.+]], i32{{.+}}%[[B1:.+]])
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#[no_mangle]
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pub fn check_le(a: Foo, b: Foo) -> bool {
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// CHECK-DAG: %[[EQ:.+]] = icmp eq i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R0:.+]] = icmp sle i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R1:.+]] = icmp ule i32 %[[A1]], %[[B1]]
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// CHECK: %[[R:.+]] = select i1 %[[EQ]], i1 %[[R1]], i1 %[[R0]]
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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: i32{{.+}}%[[A0:.+]], i32{{.+}}%[[A1:.+]], i32{{.+}}%[[B0:.+]], i32{{.+}}%[[B1:.+]])
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#[no_mangle]
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pub fn check_gt(a: Foo, b: Foo) -> bool {
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// CHECK-DAG: %[[EQ:.+]] = icmp eq i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R0:.+]] = icmp sgt i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R1:.+]] = icmp ugt i32 %[[A1]], %[[B1]]
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// CHECK: %[[R:.+]] = select i1 %[[EQ]], i1 %[[R1]], i1 %[[R0]]
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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: i32{{.+}}%[[A0:.+]], i32{{.+}}%[[A1:.+]], i32{{.+}}%[[B0:.+]], i32{{.+}}%[[B1:.+]])
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#[no_mangle]
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pub fn check_ge(a: Foo, b: Foo) -> bool {
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// CHECK-DAG: %[[EQ:.+]] = icmp eq i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R0:.+]] = icmp sge i32 %[[A0]], %[[B0]]
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// CHECK-DAG: %[[R1:.+]] = icmp uge i32 %[[A1]], %[[B1]]
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// CHECK: %[[R:.+]] = select i1 %[[EQ]], i1 %[[R1]], i1 %[[R0]]
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// CHECK-NEXT: ret i1 %[[R]]
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a >= b
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}
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