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Add codegen test.

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This commit is contained in:
Camille GILLOT 2023-02-11 08:59:19 +00:00
parent e34caaf42d
commit 86dbcb5390
1 changed files with 14 additions and 0 deletions
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tests/codegen/inherit_overflow.rs Normal file
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// compile-flags: -Zmir-enable-passes=+Inline,+ConstProp --crate-type lib
// revisions: ASSERT NOASSERT
//[ASSERT] compile-flags: -Coverflow-checks=on
//[NOASSERT] compile-flags: -Coverflow-checks=off
// CHECK-LABEL: define{{.*}} @assertion
// ASSERT: tail call void @_ZN4core9panicking5panic17h
// NOASSERT: ret i8 0
#[no_mangle]
pub fn assertion() -> u8 {
// Optimized MIR will replace this `CheckedBinaryOp` by `const (0, true)`.
// Verify that codegen does or does not emit the panic.
<u8 as std::ops::Add>::add(255, 1)
}