[PATCH] D31782: [CodeGenPrepare]Skip sext promotion if operands for multiple users is detected

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml created this revision.
Herald added a subscriber: mcrosier.
Herald added a reviewer: javed.absar.

Do not allow address type promtion if detecting an instruction which has multiple users in the middle of promotion. In such case, ISel could lose opportunities to fold the extension as part of address modes. The  added test case should show the case.


https://reviews.llvm.org/D31782

Files:
  lib/CodeGen/CodeGenPrepare.cpp
  test/CodeGen/AArch64/arm64-addr-type-promotion.ll

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