[llvm] [DAG] Define computeConstantRange for VSCALE folding (PR #176027)

[Luke Lau via llvm-commits]

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@@ -0,0 +1,46 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64 -mattr=+sve -verify-machineinstrs < %s | FileCheck %s
+
+declare i64 @llvm.vscale.i64()
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lukel97 wrote:

You don't need to declare intrinsics these days
```suggestion
```

https://github.com/llvm/llvm-project/pull/176027