[PATCH] D96703: [DAG] foldSubToUSubSat - fold sub(a,trunc(umin(zext(a),b))) -> usubsat(a,trunc(umin(b,c)))

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: craig.topper, nikic, spatel, pengfei.
Herald added subscribers: ecnelises, steven.zhang, hiraditya.
RKSimon requested review of this revision.
Herald added a project: LLVM.

This moves the last custom x86 USUBSAT fold to generic DAGCombine.

Completes PR40111


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D96703

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/psubus.ll

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