diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 591179a50bb6..9c13da007504 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2014-04-24 Tejas Belagod <tejas.belagod@arm.com> + + * config/aarch64/aarch64.c (aarch64_evpc_tbl): Reverse order of elements + for big-endian. + 2014-04-24 Richard Biener <rguenther@suse.de> * expr.c (expand_expr_real_1): Avoid gimple_assign_rhs_to_tree diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 496d1b8f041c..d644f799368e 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -8158,7 +8158,15 @@ aarch64_evpc_tbl (struct expand_vec_perm_d *d) return false; for (i = 0; i < nelt; ++i) - rperm[i] = GEN_INT (d->perm[i]); + { + int nunits = GET_MODE_NUNITS (vmode); + + /* If big-endian and two vectors we end up with a weird mixed-endian + mode on NEON. Reverse the index within each word but not the word + itself. */ + rperm[i] = GEN_INT (BYTES_BIG_ENDIAN ? d->perm[i] ^ (nunits - 1) + : d->perm[i]); + } sel = gen_rtx_CONST_VECTOR (vmode, gen_rtvec_v (nelt, rperm)); sel = force_reg (vmode, sel);