[llvm] [InferAddressSpaces] apply InferAddressSpaces to inttoptr-zext-ptrtoint address expression. (PR #79108)

[Matt Arsenault via llvm-commits]

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@@ -356,9 +384,15 @@ getPointerOperands(const Value &V, const DataLayout &DL,
     return {II.getArgOperand(0)};
   }
   case Instruction::IntToPtr: {
-    assert(isNoopPtrIntCastPair(&Op, DL, TTI));
-    auto *P2I = cast<Operator>(Op.getOperand(0));
-    return {P2I->getOperand(0)};
+    assert(isNoopPtrIntCastPair(&Op, DL, TTI) || isZExtPtrIntCastPair(&Op, DL));
+    if (isNoopPtrIntCastPair(&Op, DL, TTI)) {
+      auto *P2I = cast<Operator>(Op.getOperand(0));
+      return {P2I->getOperand(0)};
+    } else {
+      auto *ZExt = cast<Operator>(Op.getOperand(0));
+      auto *P2I = dyn_cast<Operator>(ZExt->getOperand(0));
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arsenm wrote:

Unchecked dyn_cast, just use cast<> 

https://github.com/llvm/llvm-project/pull/79108