[PATCH] D152094: DAG: Check isCondCodeLegal in is_fpclass expansion to fcmp eq 0

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: jcranmer-intel, sepavloff, kpn, andrew.w.kaylor.
Herald added subscribers: pengfei, hiraditya.
Herald added a project: All.
arsenm requested review of this revision.
Herald added a subscriber: wdng.
Herald added a project: LLVM.

Results in some x86 codegen diffs. Some look better, some look worse.


https://reviews.llvm.org/D152094

Files:
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/test/CodeGen/X86/is_fpclass-fp80.ll
  llvm/test/CodeGen/X86/is_fpclass.ll

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