rust/tests/codegen/issues/issue-75546.rs

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// compile-flags: -O
#![crate_type = "lib"]
// Test that LLVM can eliminate the impossible `i == 0` check.
// CHECK-LABEL: @issue_75546
#[no_mangle]
pub fn issue_75546() {
let mut i = 1u32;
while i < u32::MAX {
// CHECK-NOT: panic
if i == 0 { panic!(); }
i += 1;
}
}