[PATCH] D85199: GlobalISel: Add generic instructions for memory intrinsics

[Konstantin Schwarz via Phabricator via llvm-commits]

kschwarz added a comment.

> The promotion gets inserted in the libcall lowering [...]

What promotion do you mean? In its current from, createMemLibcall doesn't do any type promotion?

The problem we have is that some LLVM-IR passes introduce calls to `llvm.memcpy.p0i8.p0i8.i64`, even though our native pointer size is 32-bits. Since it turned out that fixing this in LLVM is quite invasive, we currently work around this problem by truncating the size argument to 32-bits before calling createMemLibcall.
Having the legalizer action do this for us, we could remove the custom handling from our backend.


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  https://reviews.llvm.org/D85199/new/

https://reviews.llvm.org/D85199