[llvm] [ValueTracking] Allow tracking values through Integral AddrSpaceCasts (PR #70483)

[Nikita Popov via llvm-commits]

================
@@ -1775,6 +1775,31 @@ static void computeKnownBitsFromOperator(const Operator *I,
                                   Depth + 1))
       computeKnownBits(I->getOperand(0), Known, Depth + 1, Q);
     break;
+  case Instruction::AddrSpaceCast: {
+    auto ASC = cast<AddrSpaceCastOperator>(I);
----------------
nikic wrote:

```suggestion
    auto *ASC = cast<AddrSpaceCastOperator>(I);
```

https://github.com/llvm/llvm-project/pull/70483