[llvm] [AArch64][GISel] Add fp128 and i128 sitofp/uitofp handling (PR #97691)

[via llvm-commits]

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@@ -1136,16 +1136,13 @@ LegalizerHelper::libcall(MachineInstr &MI, LostDebugLocObserver &LocObserver) {
   }
   case TargetOpcode::G_SITOFP:
   case TargetOpcode::G_UITOFP: {
-    // FIXME: Support other types
     unsigned FromSize = MRI.getType(MI.getOperand(1).getReg()).getSizeInBits();
-    unsigned ToSize = MRI.getType(MI.getOperand(0).getReg()).getSizeInBits();
-    if ((FromSize != 32 && FromSize != 64) || (ToSize != 32 && ToSize != 64))
+    Type *ToTy =
+        getFloatTypeForLLT(Ctx, MRI.getType(MI.getOperand(0).getReg()));
+    if ((FromSize != 32 && FromSize != 64 && FromSize != 128) || !ToTy)
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Him188 wrote:

This is a similar check like the one in the G_FPTOUI above. I think it's better to forbid 16-bit types as they are not tested. If other targets want 16-bit floats, they can easily relax this check.


https://github.com/llvm/llvm-project/pull/97691