diff options
Diffstat (limited to 'gcc/tree-vect-generic.c')
| -rw-r--r-- | gcc/tree-vect-generic.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c index 2f6fd5e..8b00f32 100644 --- a/gcc/tree-vect-generic.c +++ b/gcc/tree-vect-generic.c @@ -478,6 +478,7 @@ expand_vector_divmod (gimple_stmt_iterator *gsi, tree type, tree op0, { bool use_pow2 = true; bool has_vector_shift = true; + bool use_abs_op1 = false; int mode = -1, this_mode; int pre_shift = -1, post_shift; unsigned int nunits = nunits_for_known_piecewise_op (type); @@ -618,8 +619,11 @@ expand_vector_divmod (gimple_stmt_iterator *gsi, tree type, tree op0, /* n rem d = n rem -d */ if (code == TRUNC_MOD_EXPR && d < 0) - d = abs_d; - else if (abs_d == HOST_WIDE_INT_1U << (prec - 1)) + { + d = abs_d; + use_abs_op1 = true; + } + if (abs_d == HOST_WIDE_INT_1U << (prec - 1)) { /* This case is not handled correctly below. */ mode = -2; @@ -899,6 +903,23 @@ expand_vector_divmod (gimple_stmt_iterator *gsi, tree type, tree op0, if (op == unknown_optab || optab_handler (op, TYPE_MODE (type)) == CODE_FOR_nothing) return NULL_TREE; + if (use_abs_op1) + { + tree_vector_builder elts; + if (!elts.new_unary_operation (type, op1, false)) + return NULL_TREE; + unsigned int count = elts.encoded_nelts (); + for (unsigned int i = 0; i < count; ++i) + { + tree elem1 = VECTOR_CST_ELT (op1, i); + + tree elt = const_unop (ABS_EXPR, TREE_TYPE (elem1), elem1); + if (elt == NULL_TREE) + return NULL_TREE; + elts.quick_push (elt); + } + op1 = elts.build (); + } tem = gimplify_build2 (gsi, MULT_EXPR, type, cur_op, op1); op = optab_for_tree_code (MINUS_EXPR, type, optab_default); if (op == unknown_optab |