[PATCH] D89222: [X86][SelectionDAG] WIP Add SADDO_CARRY and SSUBO_CARRY to support multipart signed add/sub overflow legalization.

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 297689.
craig.topper added a comment.

Add support for expanding SADDO_CARRY and SSUBO_CARRY in type legalizer.
Default to operation action to Expand.
Rebase after committing tests for i128 on a 32-bit target to cover the second rounding of expanding.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89222/new/

https://reviews.llvm.org/D89222

Files:
  llvm/include/llvm/CodeGen/ISDOpcodes.h
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
  llvm/lib/CodeGen/TargetLoweringBase.cpp
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/known-bits.ll
  llvm/test/CodeGen/X86/sadd_sat.ll
  llvm/test/CodeGen/X86/sadd_sat_plus.ll
  llvm/test/CodeGen/X86/sadd_sat_vec.ll
  llvm/test/CodeGen/X86/ssub_sat.ll
  llvm/test/CodeGen/X86/ssub_sat_plus.ll
  llvm/test/CodeGen/X86/ssub_sat_vec.ll
  llvm/test/CodeGen/X86/vec_saddo.ll
  llvm/test/CodeGen/X86/vec_ssubo.ll
  llvm/test/CodeGen/X86/xaluo128.ll

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