[PATCH] D138347: [SelectionDAGBuilder][WIP] Teach visitBr to sink AND along with compares.

Matt Arsenault via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Dec 5 11:49:30 PST 2022


arsenm accepted this revision.
arsenm added a comment.
This revision is now accepted and ready to land.

LGTM with nit



================
Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:2219-2220
+        ConstantInt *AndRHS;
+        if (IC->isEquality() && isa<ConstantInt>(CmpRHS) &&
+            cast<ConstantInt>(CmpRHS)->isZero() &&
+            match(CmpLHS, m_OneUse(m_And(m_Value(AndLHS), m_ConstantInt(AndRHS)))) &&
----------------
also use match for the zero case?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D138347/new/

https://reviews.llvm.org/D138347



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