diff options
Diffstat (limited to 'src/vhdl/vhdl-sem_stmts.adb')
| -rw-r--r-- | src/vhdl/vhdl-sem_stmts.adb | 78 |
1 files changed, 56 insertions, 22 deletions
diff --git a/src/vhdl/vhdl-sem_stmts.adb b/src/vhdl/vhdl-sem_stmts.adb index 72f370629..06a59074d 100644 --- a/src/vhdl/vhdl-sem_stmts.adb +++ b/src/vhdl/vhdl-sem_stmts.adb @@ -1147,7 +1147,19 @@ package body Vhdl.Sem_Stmts is if Expr /= Null_Iir then Expr := Sem_Expression (Expr, Severity_Level_Type_Definition); Check_Read (Expr); + Expr := Eval_Expr_If_Static (Expr); Set_Severity_Expression (Stmt, Expr); + + -- Avoid infinite loop warning if the severity is failure. + if Current_Subprogram /= Null_Iir + and then Get_Kind (Current_Subprogram) = Iir_Kind_Process_Statement + and then Expr /= Null_Iir + and then not Is_Error (Expr) + and then Get_Expr_Staticness (Expr) = Locally + and then Eval_Is_Eq (Expr, Severity_Level_Failure) + then + Set_Stop_Flag (Current_Subprogram, True); + end if; end if; end Sem_Report_Statement; @@ -1713,6 +1725,48 @@ package body Vhdl.Sem_Stmts is Sem_Condition_Opt (Stmt); end Sem_Break_Statement; + procedure Sem_Procedure_Call_Statement (Stmt : Iir) + is + Call : constant Iir := Get_Procedure_Call (Stmt); + Imp : Iir; + Def : Iir_Predefined_Functions; + begin + Sem_Procedure_Call (Call, Stmt); + + Imp := Get_Implementation (Call); + if Imp /= Null_Iir + and then Get_Kind (Imp) = Iir_Kind_Procedure_Declaration + then + -- Sane procedure call. + + -- Set suspend flag, if calling a suspendable procedure + -- from a procedure or from a process. + if Get_Suspend_Flag (Imp) + and then (Get_Kind (Get_Current_Subprogram) + /= Iir_Kind_Function_Declaration) + and then (Get_Kind (Get_Current_Subprogram) + /= Iir_Kind_Sensitized_Process_Statement) + then + Set_Suspend_Flag (Stmt, True); + Mark_Suspendable (Stmt); + end if; + + -- To avoid inifinite loop warning. + if Get_Kind (Current_Subprogram) = Iir_Kind_Process_Statement then + Def := Get_Implicit_Definition (Imp); + case Def is + when Iir_Predefined_Std_Env_Stop_Status + | Iir_Predefined_Std_Env_Stop + | Iir_Predefined_Std_Env_Finish_Status + | Iir_Predefined_Std_Env_Finish => + Set_Stop_Flag (Current_Subprogram, True); + when others => + null; + end case; + end if; + end if; + end Sem_Procedure_Call_Statement; + -- LRM08 11.3 Process statement -- A process statement is said to be a passive process if neither the -- process itself, nor any procedure of which the process is a parent, @@ -1801,27 +1855,7 @@ package body Vhdl.Sem_Stmts is when Iir_Kind_Break_Statement => Sem_Break_Statement (Stmt); when Iir_Kind_Procedure_Call_Statement => - declare - Call : constant Iir := Get_Procedure_Call (Stmt); - Imp : Iir; - begin - Sem_Procedure_Call (Call, Stmt); - - -- Set suspend flag, if calling a suspendable procedure - -- from a procedure or from a process. - Imp := Get_Implementation (Call); - if Imp /= Null_Iir - and then Get_Kind (Imp) = Iir_Kind_Procedure_Declaration - and then Get_Suspend_Flag (Imp) - and then (Get_Kind (Get_Current_Subprogram) - /= Iir_Kind_Function_Declaration) - and then (Get_Kind (Get_Current_Subprogram) - /= Iir_Kind_Sensitized_Process_Statement) - then - Set_Suspend_Flag (Stmt, True); - Mark_Suspendable (Stmt); - end if; - end; + Sem_Procedure_Call_Statement (Stmt); when Iir_Kind_Next_Statement | Iir_Kind_Exit_Statement => Sem_Exit_Next_Statement (Stmt); @@ -2267,7 +2301,7 @@ package body Vhdl.Sem_Stmts is Sem.Add_Analysis_Checks_List (Proc); end if; else - if not Get_Suspend_Flag (Proc) then + if not Get_Suspend_Flag (Proc) and then not Get_Stop_Flag (Proc) then Warning_Msg_Sem (Warnid_No_Wait, +Proc, "infinite loop for this process without a wait statement"); |