diff options
Diffstat (limited to 'gcc/gimple-isel.cc')
| -rw-r--r-- | gcc/gimple-isel.cc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/gimple-isel.cc b/gcc/gimple-isel.cc index d79c212..1ab75e7 100644 --- a/gcc/gimple-isel.cc +++ b/gcc/gimple-isel.cc @@ -184,6 +184,20 @@ gimple_expand_vec_cond_expr (gimple_stmt_iterator *gsi, tree op0_type = TREE_TYPE (op0); tree op0a_type = TREE_TYPE (op0a); + + /* Try to fold x CMP y ? -1 : 0 to x CMP y. */ + + if (integer_minus_onep (op1) + && integer_zerop (op2) + && TYPE_MODE (TREE_TYPE (lhs)) == TYPE_MODE (TREE_TYPE (op0)) + && expand_vec_cmp_expr_p (op0a_type, op0_type, tcode)) + { + tree conv_op = build1 (VIEW_CONVERT_EXPR, TREE_TYPE (lhs), op0); + gassign *new_stmt = gimple_build_assign (lhs, conv_op); + gsi_replace (gsi, new_stmt, true); + return new_stmt; + } + if (used_vec_cond_exprs >= 2 && (get_vcond_mask_icode (mode, TYPE_MODE (op0_type)) != CODE_FOR_nothing) |