[PATCH] D75415: [DAGCombiner] Don't emit select_cc from visitSINT_TO_FP/visitUINT_TO_FP. Use plain select instead.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: spatel, RKSimon.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

Select_cc isn't used by all targets. X86 doesn't have optimizations
for it.

Since we already know the input to the sint_to_fp/uint_to_fp is
a setcc we can just emit a plain select using that setcc as the
condition. Other DAG combines can turn that into a select_cc on
targets that support it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75415

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/X86/cmovcmov.ll
  llvm/test/CodeGen/X86/pr44749.ll

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