[PATCH] D95142: [SLC] Simplify strcpy and friends with non-zero address spaces

Jessica Clarke via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sun Nov 28 19:11:23 PST 2021


jrtc27 added a comment.

In D95142#3157370 <https://reviews.llvm.org/D95142#3157370>, @mdchen wrote:

>> The pointee type is meaningless in the IR and will be going away.
>
> @arsenm @arichardson Hi, this change let user-defined string functions(e.g., `size_t strlen(int*)`) pass the check and considered a libfunc, which can cause failure in later optimizations like `optimizeStrLen` which assumes `CharSize` is 8. And pointed type does matter in this case. What do you think?

The code should've been compiled with either -fno-builtin-strlen or -ffreestanding, or used the right type for strlen, anything else is invalid. See -Wincompatible-library-redeclaration.


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  https://reviews.llvm.org/D95142/new/

https://reviews.llvm.org/D95142



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