[compiler-rt] [llvm] [nsan] Emit calls to optimized functions (PR #98900)

[Alexander Shaposhnikov via llvm-commits]

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@@ -598,7 +655,14 @@ static GlobalValue *createThreadLocalGV(const char *Name, Module &M, Type *Ty) {
 }
 
 NumericalStabilitySanitizer::NumericalStabilitySanitizer(Module &M)
-    : DL(M.getDataLayout()), Context(M.getContext()), Config(Context) {
+    : DL(M.getDataLayout()), Context(M.getContext()), Config(Context),
+      NsanCopyFns(M, {"__nsan_copy_4", "__nsan_copy_8", "__nsan_copy_16"},
+                  "__nsan_copy_values", 3),
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alexander-shaposhnikov wrote:

1. Why 3 and 2 (2 and 1 ?) ?
2. Need a comment  (e.g. 2 /*NumArgs*/)

https://github.com/llvm/llvm-project/pull/98900