[Bug tree-optimization/81396] [7/8 Regression] Optimization of reading Little-Endian 64-bit number with portable code has a regression

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81396

--- Comment #9 from Marc Glisse <glisse at gcc dot gnu.org> ---
Should we open a separate PR for the transformation you suggested in comment 4,
or does that seem not useful enough now, or will be part of bitfield gimple
lowering when that lands?