[PATCH] D120327: compiler-rt: Add udivmodei5 to builtins and add bitint library

[Matthias Gehre via Phabricator via llvm-commits]

mgehre-amd added a comment.

In D120327#3492053 <https://reviews.llvm.org/D120327#3492053>, @efriedma wrote:

> Instead of putting the `__divmodei5`/`__udivmodei5` routines in compiler-rt, can we just make the backend embed them into the object file?

I agree for smaller builtin function. Here, I would need to check how much LLVM IR is necessary. I think it can be cut down significantly if we generate a specialized
division function for each bitwidth, but it would increase the overall program size when using multiple different bit width.
And the approach would also increase the size of every object file using the large division and make the linker work harder in removing those duplicated functions.

Is there an existing intrinsic/LLVM instruction for which LLVM embeds a call in the object file today?


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https://reviews.llvm.org/D120327