[llvm] [AArch64] Fix SVE cost model for various math intrinsics (PR #184358)

[Paul Walker via llvm-commits]

================
@@ -696,6 +696,13 @@ AArch64TTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
     break;
   }
   case Intrinsic::abs: {
+    if (isa<ScalableVectorType>(RetTy) && ST->hasSVE()) {
----------------
paulwalker-arm wrote:

```suggestion
    if (isa<ScalableVectorType>(RetTy) && ST->isSVEorStreamingSVEAvailable()) {
```

https://github.com/llvm/llvm-project/pull/184358