[PATCH] D59635: [AArch64] NFC: Cleanup isAArch64FrameOffsetLegal

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen created this revision.
sdesmalen added reviewers: paquette, evandro, eli.friedman.
Herald added subscribers: kristof.beyls, javed.absar.

Cleanup isAArch64FrameOffsetLegal by:

- Merging the large switch statement to reuse AArch64InstrInfo::getMemOpInfo().
- Using AArch64InstrInfo::getUnscaledLdSt() to determine whether an instruction has an unscaled variant.
- Simplifying the logic that calculates the offset to fit the immediate.


https://reviews.llvm.org/D59635

Files:
  lib/Target/AArch64/AArch64InstrInfo.cpp
  lib/Target/AArch64/AArch64InstrInfo.h

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