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

[Paul Walker via llvm-commits]

================
@@ -1114,6 +1121,23 @@ AArch64TTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
       return getCallInstrCost(nullptr, RetTy, ICA.getArgTypes(), CostKind);
     break;
   }
+  case Intrinsic::sqrt:
+  case Intrinsic::fabs:
+  case Intrinsic::ceil:
+  case Intrinsic::floor:
+  case Intrinsic::nearbyint:
+  case Intrinsic::round:
+  case Intrinsic::rint:
+  case Intrinsic::roundeven:
+  case Intrinsic::trunc:
+  case Intrinsic::minnum:
+  case Intrinsic::maxnum: {
+    if (isa<ScalableVectorType>(RetTy) && ST->hasSVE()) {
----------------
paulwalker-arm wrote:

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

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