futog 3e0a76b1fd [Codegen][LegalizeIntegerTypes] Improve shift through stack (#96151) ...

Minor improvement on cc39c3b17f.

Use an aligned stack slot to store the shifted value.
Use the native register width as shifting unit, so the load of the
shift result is aligned.

If the shift amount is a multiple of the native register width, there is
no need to do a follow-up shift after the load. I added new tests for
these cases.

Co-authored-by: Gergely Futo <gergely.futo@hightec-rt.com>

2024-09-23 11:45:43 +02:00

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