[llvm] [WIP] Extend data layout to add non zero null value for address space. (PR #83109)

[Pierre van Houtryve via llvm-commits]

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@@ -299,6 +302,17 @@ class DataLayout {
     return ManglingMode == MM_WinCOFFX86;
   }
 
+  uint64_t getNonZeroValueForAddrSpace(uint64_t AddrSpace) {
+  auto It = AddrSpaceToNonZeroValueMap.find(AddrSpace);
+  if (It == AddrSpaceToNonZeroValueMap.end())
+    return 0x000000000;
+  return AddrSpaceToNonZeroValueMap[AddrSpace];
+  }
+
+  void setNonZeroValueForAddrSpace(uint64_t AddrSpace, uint64_t Value) {
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Pierre-vh wrote:

ditto, use something like `setNullPointerValue`

https://github.com/llvm/llvm-project/pull/83109