[llvm] [AddressSanitizer] Remove memory effects from functions (PR #130495)

[Florian Hahn via llvm-commits]

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@@ -718,6 +674,9 @@ void HWAddressSanitizer::initializeModule() {
   InstrumentGlobals =
       !CompileKernel && !UsePageAliases && optOr(ClGlobals, NewRuntime);
 
+  for (Function &F : M.functions())
+    removeASanIncompatibleFnAttributes(F, /*ReadsArgMem=*/UseShortGranules);
+
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fhahn wrote:

Why move it here? 

IICU this now changes the behavior for HWSan, because we only drop write only now if `UseShortGranules`? If so, it needs a test (and might be better done separately)

https://github.com/llvm/llvm-project/pull/130495