[llvm] [AMDGPU] expand-fp: Change frem expansion criterion (PR #158285)

[Matt Arsenault via llvm-commits]

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@@ -534,9 +534,9 @@ AArch64TargetLowering::AArch64TargetLowering(const TargetMachine &TM,
   setOperationAction(ISD::SRA_PARTS, MVT::i64, Custom);
   setOperationAction(ISD::SRL_PARTS, MVT::i64, Custom);
 
-  setOperationAction(ISD::FREM, MVT::f32, Expand);
-  setOperationAction(ISD::FREM, MVT::f64, Expand);
-  setOperationAction(ISD::FREM, MVT::f80, Expand);
+  setOperationAction(ISD::FREM, MVT::f32, LibCall);
+  setOperationAction(ISD::FREM, MVT::f64, LibCall);
+  setOperationAction(ISD::FREM, MVT::f80, LibCall);
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arsenm wrote:

Why was this setting an f80 action in the first place? 

https://github.com/llvm/llvm-project/pull/158285