[llvm] [InferAttrs] Mark errnomem-setting libcalls as such (PR #124742)

[Nikita Popov via llvm-commits]

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@@ -320,6 +357,7 @@ bool llvm::inferNonMandatoryLibFuncAttrs(Function &F,
     Changed |= setWillReturn(F);
     Changed |= setDoesNotCapture(F, 1);
     Changed |= setOnlyReadsMemory(F, 0);
+    Changed |= setOnlyAccessesArgOrErrnoMem(F);
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nikic wrote:

Accesses locale?

https://github.com/llvm/llvm-project/pull/124742