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

[Simon Pilgrim via llvm-commits]

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@@ -448,10 +448,9 @@ X86LegalizerInfo::X86LegalizerInfo(const X86Subtarget &STI,
 
   // fp comparison
   getActionDefinitionsBuilder(G_FCMP)
-      .legalIf([=](const LegalityQuery &Query) {
-        return (HasSSE1 && typePairInSet(0, 1, {{s8, s32}})(Query)) ||
-               (HasSSE2 && typePairInSet(0, 1, {{s8, s64}})(Query));
-      })
+      .legalFor((HasSSE1 || UseX87), {s8, s32})
+      .legalFor((HasSSE2 || UseX87), {s8, s64})
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RKSimon wrote:

(style) unnecessary brackets `.legalFor(HasSSE2 || UseX87,....`

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