diff options
Diffstat (limited to 'src/test/mir-opt/issues/issue-59352.rs')
-rw-r--r-- | src/test/mir-opt/issues/issue-59352.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/mir-opt/issues/issue-59352.rs b/src/test/mir-opt/issues/issue-59352.rs new file mode 100644 index 000000000..1e0045555 --- /dev/null +++ b/src/test/mir-opt/issues/issue-59352.rs @@ -0,0 +1,19 @@ +// This test is a mirror of codegen/issue-59352.rs. +// The LLVM inliner doesn't inline `char::method::is_digit()` and so it doesn't recognize this case +// as effectively `if x.is_some() { x.unwrap() } else { 0 }`. +// +// Currently, the MIR optimizer isn't capable of removing the unreachable panic in this test case. +// Once the optimizer can do that, this test case will need to be updated and codegen/issue-59352.rs +// removed. + +// EMIT_MIR issue_59352.num_to_digit.PreCodegen.after.mir +// compile-flags: -Z mir-opt-level=3 -Z span_free_formats + +pub fn num_to_digit(num: char) -> u32 { + // CHECK-NOT: panic + if num.is_digit(8) { num.to_digit(8).unwrap() } else { 0 } +} + +pub fn main() { + num_to_digit('2'); +} |