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

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D85199#2193321 <https://reviews.llvm.org/D85199#2193321>, @kschwarz wrote:

> 



> 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.

You would have to deal with this whether passes introduce this IR or not, unless we make it a verifier error to deviate from the pointer size (which would be inconsistent with every other pointer sized integer operand, although I think this is pointless)


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https://reviews.llvm.org/D85199