[Lang] Demote pow() with integer exponent #6044
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strongoier
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Related issue = #5915 This PR resolves #6044 (comment). <!-- Thank you for your contribution! If it is your first time contributing to Taichi, please read our Contributor Guidelines: https://docs.taichi-lang.org/docs/contributor_guide - Please always prepend your PR title with tags such as [CUDA], [Lang], [Doc], [Example]. For a complete list of valid PR tags, please check out https://github.com/taichi-dev/taichi/blob/master/misc/prtags.json. - Use upper-case tags (e.g., [Metal]) for PRs that change public APIs. Otherwise, please use lower-case tags (e.g., [metal]). - More details: https://docs.taichi-lang.org/docs/contributor_guide#pr-title-format-and-tags - Please fill in the issue number that this PR relates to. - If your PR fixes the issue **completely**, use the `close` or `fixes` prefix so that GitHub automatically closes the issue when the PR is merged. For example, Related issue = close #2345 - If the PR does not belong to any existing issue, free to leave it blank. --> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
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Related issue = #5915
Just as proposed in #5915, we specially handle
pow()with an integer exponent by demoting it with manual fast-pow implementation in thedemote_operationspass so thatpow()can have the same behavior across backends. In this case the return type is the type of base (lhs).