[llvm] RuntimeLibcalls: Add function signatures to RTLIB. (PR #226264)

[via llvm-commits]

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@@ -462,6 +503,37 @@ RuntimeLibcallsInfo::getFunctionTy(LLVMContext &Ctx, const Triple &TT,
     return {FunctionType::get(Type::getVoidTy(Ctx), ArgTys, false), Attrs};
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sujianIBM wrote:

I think they are still useful.
This PR only adds function signatures for calloc, malloc and free (overlapping with the hand written cases). It can't replace the hand written cases, especially the attributes.

https://github.com/llvm/llvm-project/pull/226264