[PATCH] D70253: [AArch64][SVE2] Implement remaining SVE2 floating-point intrinsics

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen added inline comments.
Herald added a reviewer: efriedma.


================
Comment at: llvm/include/llvm/IR/IntrinsicsAArch64.td:898
+                 llvm_i32_ty],
+                [IntrNoMem]>;
+
----------------
efriedma wrote:
> kmclaughlin wrote:
> > sdesmalen wrote:
> > > I'd expect the `llvm_i32_ty` to be an immediate for these instructions, right? If so you'll need to add `ImmArg<OpNo>`  to the list of properties.
> > > 
> > Thanks for taking a look at this :) I tried your suggestion of adding ImmAr<Op> to the list of properties here but had some problems with it (i.e. Cannot select: intrinsic %llvm.aarch64.sve.fmlalb.lane). I don't think this is too much of an issue here as we have additional checks on the immediate with VectorIndexH32b, which ensures the immediate is in the correct range.
> The point of immarg markings isn't to assist the backend; it's to ensure IR optimizations don't break your intrinsic calls.
The pattern is probably not matching because the immediate operand is a `TargetConstant` where the `AsmVectorIndexOpnd` derives from `ImmLeaf`, rather than `TImmLeaf` as introduced by D58232.


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