[llvm] [X86][GlobalISel] Support G_FCMP for scalar cases (PR #123598)

[Matt Arsenault via llvm-commits]

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@@ -449,8 +449,11 @@ X86LegalizerInfo::X86LegalizerInfo(const X86Subtarget &STI,
   // fp comparison
   getActionDefinitionsBuilder(G_FCMP)
       .legalIf([=](const LegalityQuery &Query) {
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arsenm wrote:

I mean like https://github.com/llvm/llvm-project/blob/178f47143a3b3c547df6d1f07e9707792f5d9fd4/llvm/include/llvm/CodeGen/GlobalISel/LegalizerInfo.h#L629

https://github.com/llvm/llvm-project/pull/123598