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Revert patch for Is_Modular_Integer_Type and Is_Signed_Integer_Type; add new synthesized predicates Has_Modular_Operations and Has_Overflow_Operations, and adjust the frontend sources to rely on them. gcc/ada/ChangeLog: * einfo.ads (Has_Unsigned_Base_Range_Aspect): Update documentation. (Has_Modular_Operations): New synthesized predicate. (Has_Overflow_Operations): New synthesized predicate. * einfo-utils.ads (Has_Modular_Operations): New function. (Has_Overflow_Operations): New function. * einfo-utils.adb (Is_Modular_Integer_Type): Undo previous patch. (Is_Signed_Integer_Type): Undo previous patch. (Has_Modular_Operations): New function. (Has_Overflow_Operations): New function. * checks.adb (Determine_Range): Replace selected occurrences of calls to Is_Modular_Integer_Type by calls to Has_Modular_Operations, and calls to Is_Signed_Integer_Type by calls to Has Overflow_Operations. (Enable_Range_Check): Ditto. (Insert_Valid_Check): Ditto. * exp_aggr.adb (Others_Check): Ditto. * exp_attr.adb (Expand_N_Attribute_Reference [Attribute_Pred, Attribute_Succ]): Ditto. * exp_ch4.adb (Expand_Compare_Minimize_Eliminate_Overflow): Ditto. (Size_In_Storage_Elements): Ditto. (Expand_N_Op_Abs): Ditto. (Expand_N_Op_Expon): Ditto. (Expand_N_Op_Minus): Ditto. (Expand_N_Op_Multiply): Ditto. (Expand_N_Op_Subtract): Ditto. * freeze.adb (Freeze_Entity): Ditto. * sem_aggr.adb (Report_Null_Array_Constraint_Error): Ditto plus report specific error for index with unsigned_base_range aspect. * sem_attr.adb (Check_Modular_Integer_Type): Ditto. (Analyze_Attribute [Attribute_Pred, Attribute_Succ, Attribute_ Range_Length, Attribute_Small, Attribute_Reduce]): Ditto. * sem_ch12.adb (Instantiate_Type): Ditto. (Validate_Formal_Type_Default): Ditto. * sem_ch13.adb (Valid_Empty): Ditto. * sem_ch2.adb (Analyze_Integer_Literal): Ditto. * sem_ch3.adb (Unsigned_Base_Range_Type_Declaration): Set attribute Has_Unsigned_Base_Range_Aspect on the implicit base, and set Etype of its first subtype E_Modular_Integer_Subtype. * sem_ch4.adb (Analyze_Call): Ditto. * sem_eval.adb (Check_Non_Static_Context_For_Overflow): Ditto. (Eval_Arithmetic_Op): Ditto. (Eval_Integer_Literal): Ditto. (Eval_Logical_Op): Ditto. (Eval_Op_Expon): Ditto. (Eval_Op_Not): Ditto. (Eval_Unary_Op): Ditto. (Fold_Shift): Ditto. (Test_Expression_Is_Foldable): Ditto. * sem_intr.adb (Check_Shift): Ditto. * sem_prag.adb (Analyze_Pragma [Pragma_Unsigned_Base_Range]): Add assertion. * sem_res.adb (Resolve_Logical_Op): Ditto. (Resolve_Unary_Op): Ditto. (Set_String_Literal_Subtype): Ditto. * sem_type.adb (Covers): Ditto. (Specific_Type): Ditto. (Valid_Boolean_Arg): Ditto. * sem_util.adb (Wrong_Type): Ditto * style.adb (Check_Boolean_Operator): Ditto.
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