[compiler-rt] [AArch64][compiler-rt] Add memcpy, memset, memmove, memchr simple imp… (PR #77496)

[Sander de Smalen via llvm-commits]

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@@ -0,0 +1,98 @@
+#include <stdlib.h>
+
+// WARNING: When building the scalar versions of these functions you need to
+// use the compiler flag "-mllvm -disable-loop-idiom-all" to prevent clang
+// from recognising a loop idiom and planting calls to memcpy!
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sdesmalen-arm wrote:

There is a comment here that seems important, but doesn't seem to be addressed by your patch?

https://github.com/llvm/llvm-project/pull/77496