llvm-project

3563af6c - [DAGCombiner] In mergeTruncStore, make sure we aren't storing shifted in bits. (#90939)

[DAGCombiner] In mergeTruncStore, make sure we aren't storing shifted in bits. (#90939) When looking through a right shift, we need to make sure that all of the bits we are using from the shift come from the shift input and not the sign or zero bits that are shifted in. Fixes #90936.