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Diffstat (limited to 'tests/codegen/comparison-operators-newtype.rs')
-rw-r--r-- | tests/codegen/comparison-operators-newtype.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tests/codegen/comparison-operators-newtype.rs b/tests/codegen/comparison-operators-newtype.rs new file mode 100644 index 000000000..683a2bd4f --- /dev/null +++ b/tests/codegen/comparison-operators-newtype.rs @@ -0,0 +1,49 @@ +// The `derive(PartialOrd)` for a newtype doesn't override `lt`/`le`/`gt`/`ge`. +// This double-checks that the `Option<Ordering>` intermediate values used +// in the operators for such a type all optimize away. + +// compile-flags: -C opt-level=1 +// min-llvm-version: 15.0 + +#![crate_type = "lib"] + +use std::cmp::Ordering; + +#[derive(PartialOrd, PartialEq)] +pub struct Foo(u16); + +// CHECK-LABEL: @check_lt +// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]]) +#[no_mangle] +pub fn check_lt(a: Foo, b: Foo) -> bool { + // CHECK: %[[R:.+]] = icmp ult i16 %[[A]], %[[B]] + // CHECK-NEXT: ret i1 %[[R]] + a < b +} + +// CHECK-LABEL: @check_le +// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]]) +#[no_mangle] +pub fn check_le(a: Foo, b: Foo) -> bool { + // CHECK: %[[R:.+]] = icmp ule i16 %[[A]], %[[B]] + // CHECK-NEXT: ret i1 %[[R]] + a <= b +} + +// CHECK-LABEL: @check_gt +// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]]) +#[no_mangle] +pub fn check_gt(a: Foo, b: Foo) -> bool { + // CHECK: %[[R:.+]] = icmp ugt i16 %[[A]], %[[B]] + // CHECK-NEXT: ret i1 %[[R]] + a > b +} + +// CHECK-LABEL: @check_ge +// CHECK-SAME: (i16 noundef %[[A:.+]], i16 noundef %[[B:.+]]) +#[no_mangle] +pub fn check_ge(a: Foo, b: Foo) -> bool { + // CHECK: %[[R:.+]] = icmp uge i16 %[[A]], %[[B]] + // CHECK-NEXT: ret i1 %[[R]] + a >= b +} |