https://github.com/davemgreen commented:
I have always expected shuffles to be canonicalized to make the lowest mask lane the first operand. I believe the AArch64 and Arm matching functions rely on that at the moment. https://godbolt.org/z/1rr1E8v1K https://github.com/llvm/llvm-project/pull/113212 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
