Maurice Heumann a1cdb323e2 [ARM] Adjust strd/ldrd codegen alignment requirements ...

In change https://reviews.llvm.org/D152790, it was discovered that the
alignment requirement calculation for LDRD/STRD codegen was suboptimal
and the calculation for volatile loads and stores was adjusted.

This change here adopts the calculation for the remaining non-volatile
occurances.

Recommitting after undefined behavior fix in D155093.

Differential Revision: https://reviews.llvm.org/D153800

2023-07-14 12:54:18 -07:00

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