[PATCH] D121039: [LegalizeTypes][ARM][X86] Change ExpandIntRes_ABS to use sra+xor+sub.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: RKSimon, spatel.
Herald added subscribers: pengfei, dmgreen, hiraditya, kristof.beyls, arichardson.
Herald added a project: All.
craig.topper requested review of this revision.
Herald added a project: LLVM.

Previously we used sra+add+xor if ADDCARRY is supported. This changes
to sra+xor+sub is SUBCARRY is available.

This is consistent with the recent change to the default expansion
in LegalizeDAG.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D121039

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/test/CodeGen/ARM/iabs.ll
  llvm/test/CodeGen/Thumb2/mve-abs.ll
  llvm/test/CodeGen/Thumb2/mve-vabdus.ll
  llvm/test/CodeGen/X86/abs.ll
  llvm/test/CodeGen/X86/iabs.ll
  llvm/test/CodeGen/X86/neg-abs.ll
  llvm/test/tools/UpdateTestChecks/update_llc_test_checks/Inputs/basic.ll.expected

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