[clang] [compiler-rt] [Sanitizers] the access size (8 bytes) exceeds the max lock-free size (4 bytes) for 32-bit (PR #125388)

[Wael Yehia via llvm-commits]

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@@ -338,6 +338,10 @@ void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("-lpthread");
   }
   const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
+  
+  if (Sanitize.hasAnySanitizer() && IsArch32Bit) {
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w2yehia wrote:

a comment on why we need -latomic here. 
For example:
```
// Some code in the sanitizer libs requires 64-bit atomics.
```

https://github.com/llvm/llvm-project/pull/125388