https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105049
--- Comment #3 from CVS 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:0b0fc52b0412cc1608f4f0edb8a0ab2495619c4e commit r12-7813-g0b0fc52b0412cc1608f4f0edb8a0ab2495619c4e Author: Richard Biener <rguent...@suse.de> Date: Fri Mar 25 08:43:45 2022 +0100 middle-end/105049 - fix uniform_vector_p and vector CTOR gimplification We have return VIEW_CONVERT_EXPR<U>( VEC_PERM_EXPR < {<<< Unknown tree: compound_literal_expr V D.1984 = { 0 }; >>>, { 0 }} , {<<< Unknown tree: compound_literal_expr V D.1985 = { 0 }; >>>, { 0 }} , { 0, 0 } > & {(short int) SAVE_EXPR <c>, (short int) SAVE_EXPR <c>}); where we gimplify the init CTORs to _1 = {{ 0 }, { 0 }}; _2 = {{ 0 }, { 0 }}; instead of to vector constants. That later runs into a bug in uniform_vector_p which doesn't handle CTORs of vector elements correctly. The following adjusts uniform_vector_p to handle CTORs of vector elements. 2022-03-25 Richard Biener <rguent...@suse.de> PR middle-end/105049 * tree.cc (uniform_vector_p): Recurse for VECTOR_CST or CONSTRUCTOR first elements. * gcc.dg/pr105049.c: New testcase.
