diff options
| -rw-r--r-- | gcc/ada/exp_ch5.adb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ada/exp_ch5.adb b/gcc/ada/exp_ch5.adb index 209741c..9669737 100644 --- a/gcc/ada/exp_ch5.adb +++ b/gcc/ada/exp_ch5.adb @@ -1660,6 +1660,15 @@ package body Exp_Ch5 is return False; end Volatile_Or_Independent; + function Slice_Of_Packed_Component (L : Node_Id) return Boolean is + (Nkind (L) = N_Slice + and then Nkind (Prefix (L)) = N_Indexed_Component + and then Is_Bit_Packed_Array (Etype (Prefix (Prefix (L))))); + -- L is the left-hand side Name. Returns True if L is a slice of a + -- component of a bit-packed array. The optimization is disabled in + -- that case, because Expand_Assign_Array_Bitfield_Fast cannot + -- currently handle that case correctly. + L : constant Node_Id := Name (N); R : constant Node_Id := Expression (N); -- Left- and right-hand sides of the assignment statement @@ -1681,6 +1690,7 @@ package body Exp_Ch5 is and then not Reverse_Storage_Order (R_Type) and then Ndim = 1 and then Slices + and then not Slice_Of_Packed_Component (L) and then not Volatile_Or_Independent (L, L_Type) and then not Volatile_Or_Independent (R, R_Type) then |