[llvm] [AArch64][GlobalISel] Improve fixed-point int-to-fp selection (PR #224055)

[Vimal Patel via llvm-commits]

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@@ -816,6 +816,35 @@ bool AArch64RegisterBankInfo::prefersFPUse(const MachineInstr &MI,
   return onlyDefinesFP(MI, MRI, TRI, Depth);
 }
 
+static bool shouldUseFPRForCvtOperand(
+    const RegisterBankInfo &RBI, const MachineInstr &MI,
+    const MachineRegisterInfo &MRI, const AArch64RegisterInfo &TRI,
+    function_ref<bool(const MachineInstr &)> HasFPConstraints,
+    unsigned BankedOpIdx, unsigned OtherOpIdx, bool ForceFPRForBankedOp16,
+    bool ForceFPRForOtherOp16, bool AllowFPRCVT, bool CheckBankedOpUses) {
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pvimal816a wrote:

Tried to simplify to an extent possible.

https://github.com/llvm/llvm-project/pull/224055