diff options
Diffstat (limited to 'gcc/expr.cc')
| -rw-r--r-- | gcc/expr.cc | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/gcc/expr.cc b/gcc/expr.cc index 7aac575..ed4dbb1 100644 --- a/gcc/expr.cc +++ b/gcc/expr.cc @@ -1000,18 +1000,21 @@ can_use_qi_vectors (by_pieces_operation op) /* Return true if optabs exists for the mode and certain by pieces operations. */ static bool -qi_vector_mode_supported_p (fixed_size_mode mode, by_pieces_operation op) +by_pieces_mode_supported_p (fixed_size_mode mode, by_pieces_operation op) { + if (optab_handler (mov_optab, mode) == CODE_FOR_nothing) + return false; + if ((op == SET_BY_PIECES || op == CLEAR_BY_PIECES) - && optab_handler (vec_duplicate_optab, mode) != CODE_FOR_nothing) - return true; + && VECTOR_MODE_P (mode) + && optab_handler (vec_duplicate_optab, mode) == CODE_FOR_nothing) + return false; if (op == COMPARE_BY_PIECES - && optab_handler (mov_optab, mode) != CODE_FOR_nothing - && can_compare_p (EQ, mode, ccp_jump)) - return true; + && !can_compare_p (EQ, mode, ccp_jump)) + return false; - return false; + return true; } /* Return the widest mode that can be used to perform part of an @@ -1035,7 +1038,7 @@ widest_fixed_size_mode_for_size (unsigned int size, by_pieces_operation op) { if (GET_MODE_SIZE (candidate) >= size) break; - if (qi_vector_mode_supported_p (candidate, op)) + if (by_pieces_mode_supported_p (candidate, op)) result = candidate; } @@ -1049,7 +1052,7 @@ widest_fixed_size_mode_for_size (unsigned int size, by_pieces_operation op) { mode = tmode.require (); if (GET_MODE_SIZE (mode) < size - && targetm.scalar_mode_supported_p (mode)) + && by_pieces_mode_supported_p (mode, op)) result = mode; } @@ -1454,7 +1457,7 @@ op_by_pieces_d::smallest_fixed_size_mode_for_size (unsigned int size) break; if (GET_MODE_SIZE (candidate) >= size - && qi_vector_mode_supported_p (candidate, m_op)) + && by_pieces_mode_supported_p (candidate, m_op)) return candidate; } } |