https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94683
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Sandiford <rsand...@gcc.gnu.org>: https://gcc.gnu.org/g:85353e24ca90282e1d3620682841f524de20475c commit r10-7851-g85353e24ca90282e1d3620682841f524de20475c Author: Richard Sandiford <richard.sandif...@arm.com> Date: Tue Apr 21 16:11:07 2020 +0100 forwprop: Fix ICE when building a VEC_PERM_EXPR [PR94683] The type compatibility handling in simplify_vector_constructor is based on the number of elements and on element type compatibility, but that's no longer enough to ensure that two vector types are compatible. This patch uses a VIEW_CONVERT_EXPR if the permutation type and result type are distinct. 2020-04-21 Richard Sandiford <richard.sandif...@arm.com> gcc/ PR tree-optimization/94683 * tree-ssa-forwprop.c (simplify_vector_constructor): Use a VIEW_CONVERT_EXPR to handle mixtures of similarly-structured but distinct vector types. gcc/testsuite/ PR tree-optimization/94683 * gcc.target/aarch64/sve/acle/general/pr94683.c: New test.
