This patch significantly reduces compilation time at -O0 in typical conditions
by short-circuiting calls to the somewhat costly Is_RTE function when they are
not necessary.
No functional changes.
Tested on x86_64-pc-linux-gnu, committed on trunk
2011-08-02 Eric Botcazou <ebotca...@adacore.com>
* exp_ch6.adb (Expand_Call): Guard restriction checks with a call
to Restriction_Check_Required.
* sem_ch3.adb (Analyze_Object_Declaration): Likewise.
* sem_res.adb (Resolve_Call): Likewise.
* sem_attr.adb (Check_Stream_Attribute): Likewise.
Index: sem_ch3.adb
===================================================================
--- sem_ch3.adb (revision 177124)
+++ sem_ch3.adb (working copy)
@@ -3671,8 +3671,9 @@
-- Check for violation of No_Local_Timing_Events
- if Is_RTE (Etype (Id), RE_Timing_Event)
+ if Restriction_Check_Required (No_Local_Timing_Events)
and then not Is_Library_Level_Entity (Id)
+ and then Is_RTE (Etype (Id), RE_Timing_Event)
then
Check_Restriction (No_Local_Timing_Events, N);
end if;
Index: sem_res.adb
===================================================================
--- sem_res.adb (revision 177127)
+++ sem_res.adb (working copy)
@@ -5702,9 +5702,10 @@
-- Check for violation of restriction No_Specific_Termination_Handlers
-- and warn on a potentially blocking call to Abort_Task.
- if Is_RTE (Nam, RE_Set_Specific_Handler)
- or else
- Is_RTE (Nam, RE_Specific_Handler)
+ if Restriction_Check_Required (No_Specific_Termination_Handlers)
+ and then (Is_RTE (Nam, RE_Set_Specific_Handler)
+ or else
+ Is_RTE (Nam, RE_Specific_Handler))
then
Check_Restriction (No_Specific_Termination_Handlers, N);
@@ -5717,7 +5718,8 @@
-- need to check the second argument to determine whether it is an
-- absolute or relative timing event.
- if Is_RTE (Nam, RE_Set_Handler)
+ if Restriction_Check_Required (No_Relative_Delay)
+ and then Is_RTE (Nam, RE_Set_Handler)
and then Is_RTE (Etype (Next_Actual (First_Actual (N))), RE_Time_Span)
then
Check_Restriction (No_Relative_Delay, N);
Index: sem_attr.adb
===================================================================
--- sem_attr.adb (revision 177118)
+++ sem_attr.adb (working copy)
@@ -1646,9 +1646,10 @@
-- Check special case of Exception_Id and Exception_Occurrence which
-- are not allowed for restriction No_Exception_Registration.
- if Is_RTE (P_Type, RE_Exception_Id)
- or else
- Is_RTE (P_Type, RE_Exception_Occurrence)
+ if Restriction_Check_Required (No_Exception_Registration)
+ and then (Is_RTE (P_Type, RE_Exception_Id)
+ or else
+ Is_RTE (P_Type, RE_Exception_Occurrence))
then
Check_Restriction (No_Exception_Registration, P);
end if;
Index: exp_ch6.adb
===================================================================
--- exp_ch6.adb (revision 177121)
+++ exp_ch6.adb (working copy)
@@ -2936,12 +2936,15 @@
-- Check for violation of No_Abort_Statements
- if Is_RTE (Subp, RE_Abort_Task) then
+ if Restriction_Check_Required (No_Abort_Statements)
+ and then Is_RTE (Subp, RE_Abort_Task)
+ then
Check_Restriction (No_Abort_Statements, Call_Node);
-- Check for violation of No_Dynamic_Attachment
- elsif RTU_Loaded (Ada_Interrupts)
+ elsif Restriction_Check_Required (No_Dynamic_Attachment)
+ and then RTU_Loaded (Ada_Interrupts)
and then (Is_RTE (Subp, RE_Is_Reserved) or else
Is_RTE (Subp, RE_Is_Attached) or else
Is_RTE (Subp, RE_Current_Handler) or else
