https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118062
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:cfe1ad3c488693a10fafb39d68c8cabc6e48daa7 commit r15-6309-gcfe1ad3c488693a10fafb39d68c8cabc6e48daa7 Author: Richard Biener <rguent...@suse.de> Date: Tue Dec 17 11:23:02 2024 +0100 middle-end/118062 - bogus lowering of vector compares The generic expand_vector_piecewise routine supports lowering of a vector operation to vector operations of smaller size. When computing the extract position from the larger vector it uses the element size in bits of the original result vector to determine the number of elements in the smaller vector. That is wrong when lowering a compare as the vector element size of a bool vector does not have to agree with that of the compare operand. The following simplifies this, fixing the error. PR middle-end/118062 * tree-vect-generic.cc (expand_vector_piecewise): Properly compute delta.
