[llvm] [AArch64][GlobalISel] Use TargetConstant for shift immediates (PR #161527)

[David Green via llvm-commits]

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@@ -162,7 +162,7 @@ let TargetPrefix = "aarch64" in {  // All intrinsics start with "llvm.aarch64.".
   class AdvSIMD_2Arg_Scalar_Narrow_Intrinsic
     : DefaultAttrsIntrinsic<[llvm_anyint_ty],
                 [LLVMExtendedType<0>, llvm_i32_ty],
-                [IntrNoMem]>;
+                [IntrNoMem, ImmArg<ArgIndex<1>>]>;
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davemgreen wrote:

They all require immediates for these intrinsics.

https://github.com/llvm/llvm-project/pull/161527