diff options
Diffstat (limited to 'gcc/ada/exp_util.ads')
| -rw-r--r-- | gcc/ada/exp_util.ads | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/gcc/ada/exp_util.ads b/gcc/ada/exp_util.ads index 3c215b0f2d4..c83b97ef1e0 100644 --- a/gcc/ada/exp_util.ads +++ b/gcc/ada/exp_util.ads @@ -7,7 +7,7 @@ -- S p e c -- -- -- -- -- --- Copyright (C) 1992-2001 Free Software Foundation, Inc. -- +-- Copyright (C) 1992-2002 Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- @@ -243,6 +243,32 @@ package Exp_Util is -- copy after it is attached to the tree. The Name_Req flag is set to -- ensure that the result is suitable for use in a context requiring a -- name (e.g. the prefix of an attribute reference). + -- + -- Note that if there are any run time checks in Exp, these same checks + -- will be duplicated in the returned duplicated expression. The two + -- following functions allow this behavior to be modified. + + function Duplicate_Subexpr_No_Checks + (Exp : Node_Id; + Name_Req : Boolean := False) + return Node_Id; + -- Identical in effect to Duplicate_Subexpr, except that Remove_Checks + -- is called on the result, so that the duplicated expression does not + -- include checks. This is appropriate for use when Exp, the original + -- expression is unconditionally elaborated before the duplicated + -- expression, so that there is no need to repeat any checks. + + function Duplicate_Subexpr_Move_Checks + (Exp : Node_Id; + Name_Req : Boolean := False) + return Node_Id; + -- Identical in effect to Duplicate_Subexpr, except that Remove_Checks + -- is called on Exp after the duplication is complete, so that the + -- original expression does not include checks. In this case the result + -- returned (the duplicated expression) will retain the original checks. + -- This is appropriate for use when the duplicated expression is sure + -- to be elaborated before the original expression Exp, so that there + -- is no need to repeat the checks. procedure Ensure_Defined (Typ : Entity_Id; N : Node_Id); -- This procedure ensures that type referenced by Typ is defined. For the |