[all-commits] [llvm/llvm-project] 0f9194: [ValueTracking] Handle recursive phis in knownFPCl...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0f919444adfa74b46df50aa2da12e7137c23a02c
      https://github.com/llvm/llvm-project/commit/0f919444adfa74b46df50aa2da12e7137c23a02c
  Author: David Green <david.green at arm.com>
  Date:   2024-11-01 (Fri, 01 Nov 2024)

  Changed paths:
    M llvm/lib/Analysis/ValueTracking.cpp
    M llvm/test/Transforms/Attributor/nofpclass-phiselect.ll
    M llvm/test/Transforms/EarlyCSE/nofpclass-phi-regression.ll
    M llvm/test/Transforms/PhaseOrdering/AArch64/predicated-reduction.ll

  Log Message:
  -----------
  [ValueTracking] Handle recursive phis in knownFPClass (#114008)

As a follow-on to 113686, this breaks the recursion between phi nodes
that have p1 = phi(x, p2) and p2 = phi(y, p1). The knownFPClass can be
calculated from the classes of p1 and p2.



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