[llvm] [DAG] Remove Depth=1 hack from isGuaranteedNotToBeUndefOrPoison checks (PR #152127)

[Matt Arsenault via llvm-commits]

================
@@ -6351,8 +6351,7 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
     break;
   case ISD::FREEZE:
     assert(VT == N1.getValueType() && "Unexpected VT!");
-    if (isGuaranteedNotToBeUndefOrPoison(N1, /*PoisonOnly*/ false,
-                                         /*Depth*/ 1))
+    if (isGuaranteedNotToBeUndefOrPoison(N1, /*PoisonOnly*/ false))
----------------
arsenm wrote:

```suggestion
    if (isGuaranteedNotToBeUndefOrPoison(N1, /*PoisonOnly=*/ false))
```

https://github.com/llvm/llvm-project/pull/152127