[llvm] [X86][GlobalISel] - Legalize And Select of G_FPTOSI/G_SITOFP in X87 mode (PR #137377)

[Matt Arsenault via llvm-commits]

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@@ -841,13 +841,21 @@ def X86fldf80 : PatFrag<(ops node:$ptr), (X86fld node:$ptr), [{
 
 def X86fild16 : PatFrag<(ops node:$ptr), (X86fild node:$ptr), [{
   return cast<MemIntrinsicSDNode>(N)->getMemoryVT() == MVT::i16;
-}]>;
+}]> {
+  let GISelPredicateCode = [{ return checkMemoryOpSize(MI, 2); }];
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arsenm wrote:

You can do this in terms of LLT instead of the byte size, like the dag version 

https://github.com/llvm/llvm-project/pull/137377