https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91060
--- Comment #15 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- Author: rsandifo Date: Wed Jul 10 18:41:44 2019 New Revision: 273365 URL: https://gcc.gnu.org/viewcvs?rev=273365&root=gcc&view=rev Log: [arm] Fix BE index for single-var vector initialisers (PR91060) If a vector constructor has a single nonconstant element, neon_expand_vector_init loads the constant lanes and then inserts the nonconstant value. The problem was that it was doing the insertion using the arm_neon.h neon_vset_lane<mode> patterns, which use architectural lane numbering rather than GCC lane numbering. 2019-07-10 Richard Sandiford <richard.sandif...@arm.com> gcc/ PR target/91060 * config/arm/iterators.md (V2DI_ONLY): New mode iterator. * config/arm/neon.md (vec_set<mode>_internal): Add a '@' prefix. (vec_setv2di_internal): Reexpress as... (@vec_set<V2DI_ONLY:mode>_internal): ...this. * config/arm/arm.c (neon_expand_vector_init): Use gen_vec_set_internal rather than gen_neon_vset_lane<mode>. Modified: trunk/gcc/ChangeLog trunk/gcc/config/arm/arm.c trunk/gcc/config/arm/iterators.md trunk/gcc/config/arm/neon.md
