Issue 138335
Summary Funnel shift is not changed from right to left shift
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Reporter AZero13
    Yes I know this has two cases of subpar optimization: One where the funnel shift is 64-bit based, and the other is left funnel shifts that can be converted to a right funnel shift. This one is about the latter. However, this was lifted from one of gcc's test suites. 

https://godbolt.org/z/Yd63ed3sv
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