[llvm] [SelectionDAG] Remove `NoNaNsFPMath` in `visitFCmp` (PR #163519)

[via llvm-commits]

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@@ -1001,11 +1001,13 @@ def MFMALdScaleXForm : SDNodeXForm<timm, [{
   return CurDAG->getTargetConstant(New, SDLoc(N), MVT::i32);
 }]>;
 
-def is_canonicalized : PatLeaf<(fAny srcvalue:$src), [{
-  const SITargetLowering &Lowering =
+def fcanonicalize_canonicalized
+    : PatFrag<(ops node:$op), (fcanonicalize node:$op), [{
+    const SITargetLowering &Lowering =
       *static_cast<const SITargetLowering *>(getTargetLowering());
-  return Lowering.isCanonicalized(*CurDAG, Op);
+    return Lowering.isCanonicalized(*CurDAG, Op->getOperand(0), N->getFlags());
 }]> {
+  // FIXME: This predicate for GlobalISel is dead code.
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paperchalice wrote:

Regardless the change, this predicate doesn't take part in instruction selection.

https://github.com/llvm/llvm-project/pull/163519