>> Which one is right? Hi, Richard. Let me explain this situation. Both situations are possible. It's depending on the 'ELSE' value whether it is unitialized value.
For reduction case: for (int i = 0; i < n; i++) result += a[i] The trailing elements should be well-defined, keep the original value. Otherwise, it will cause run-time issue. For integer DIV operation: for (int i = 0; i < n; i++) a[i] = a[i] / b[i]; The trailling elements are DON'T care (or undefined), I will use unitialized value in 'ELSE' value. Then later 'expand' stage will expand it into "clobber scratch" RTL. Thanks. juzhe.zh...@rivai.ai
