[llvm] [X86][GlobalIsel] fix regbank issue fabs (PR #145674)

[Simon Pilgrim via llvm-commits]

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@@ -419,7 +419,8 @@ X86LegalizerInfo::X86LegalizerInfo(const X86Subtarget &STI,
       .legalFor(UseX87, {s80});
 
   getActionDefinitionsBuilder(G_FABS)
-      .legalFor(UseX87 && !HasSSE2 && !HasSSE1, {s64, s80})
+      .legalFor(UseX87 && !HasSSE2 && !HasSSE1, {s80})
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RKSimon wrote:

Agreed - x87_f80 is only available with UseX87 - SSE availability is irrelevant

https://github.com/llvm/llvm-project/pull/145674