with Opt; use Opt;
with Osint; use Osint;
with Output; use Output;
+with Par_SCO;
with Prepcomp;
with Repinfo; use Repinfo;
with Restrict;
with Rtsfind;
+with SCOs;
with Sem;
with Sem_Ch8;
with Sem_Ch12;
procedure Adjust_Global_Switches is
begin
- -- Debug flag -gnatd.I is a synonym of Generate_SCIL
+ -- Debug flag -gnatd.I is a synonym for Generate_SCIL and requires code
+ -- generation.
- if Debug_Flag_Dot_II then
+ if Debug_Flag_Dot_II
+ and then Operating_Mode = Generate_Code
+ then
Generate_SCIL := True;
end if;
if CodePeer_Mode then
- -- Turn off inlining, confuses codepeer output and gains nothing
+ -- Turn off inlining, confuses CodePeer output and gains nothing
Front_End_Inlining := False;
Inline_Active := False;
- -- Turn off ASIS mode: incompatible with front-end expansion.
+ -- Turn off ASIS mode: incompatible with front-end expansion
ASIS_Mode := False;
- -- Turn off dynamic elaboration checks: generates inconsitencies in
+ -- Disable front-end optimizations, to keep the tree as close to the
+ -- source code as possible, and also to avoid inconsistencies between
+ -- trees when using different optimization switches.
+
+ Optimization_Level := 0;
+
+ -- Disable specific expansions for Restrictions pragmas to avoid
+ -- tree inconsistencies between compilations with different pragmas
+ -- that will cause different SCIL files to be generated for the
+ -- same Ada spec.
+
+ Treat_Restrictions_As_Warnings := True;
+
+ -- Suppress overflow, division by zero and access checks since they
+ -- are handled implicitly by CodePeer.
+
+ -- Turn off dynamic elaboration checks: generates inconsistencies in
-- trees between specs compiled as part of a main unit or as part of
-- a with-clause.
- Dynamic_Elaboration_Checks := False;
+ -- Turn off alignment checks: these cannot be proved statically by
+ -- CodePeer and generate false positives.
- -- Suppress overflow checks since this is handled implicitely by
- -- codepeer. Enable all other language checks.
+ -- Enable all other language checks
- Suppress_Options := (Overflow_Check => True, others => False);
+ Suppress_Options :=
+ (Access_Check => True,
+ Alignment_Check => True,
+ Division_Check => True,
+ Elaboration_Check => True,
+ Overflow_Check => True,
+ others => False);
Enable_Overflow_Checks := False;
+ Dynamic_Elaboration_Checks := False;
-- Kill debug of generated code, since it messes up sloc values
Debug_Generated_Code := False;
-- Turn cross-referencing on in case it was disabled (by e.g. -gnatD)
- -- Do we really need to spend time generating xref in codepeer
+ -- Do we really need to spend time generating xref in CodePeer
-- mode??? Consider setting Xref_Active to False.
Xref_Active := True;
Polling_Required := False;
- -- Set operating mode to check semantics with full front-end
- -- expansion, but no back-end code generation.
+ -- Set operating mode to Generate_Code to benefit from full
+ -- front-end expansion (e.g. generics).
- Operating_Mode := Check_Semantics;
- Debug_Flag_X := True;
+ Operating_Mode := Generate_Code;
-- We need SCIL generation of course
Generate_SCIL := True;
- -- Enable assertions and debug pragmas, since they give codepeer
+ -- Enable assertions and debug pragmas, since they give CodePeer
-- valuable extra information.
Assertions_Enabled := True;
Debug_Pragmas_Enabled := True;
-- Suppress compiler warnings, since what we are interested in here
- -- is what codepeer can find out. Also disable all simple value
+ -- is what CodePeer can find out. Also disable all simple value
-- propagation. This is an optimization which is valuable for code
-- optimization, and also for generation of compiler warnings, but
- -- these are being turned off anyway, and codepeer understands
+ -- these are being turned off anyway, and CodePeer understands
-- things more clearly if references are not optimized in this way.
Warning_Mode := Suppress;
Debug_Flag_MM := True;
-- Set normal RM validity checking, and checking of IN OUT parameters
- -- (this might give codepeer more useful checks to analyze, to be
+ -- (this might give CodePeer more useful checks to analyze, to be
-- confirmed???). All other validity checking is turned off, since
- -- this can generate very complex trees that only confuse codepeer
+ -- this can generate very complex trees that only confuse CodePeer
-- and do not bring enough useful info.
Reset_Validity_Check_Options;
Validity_Check_In_Params := True;
-- Turn off style check options since we are not interested in any
- -- front-end warnings when we are getting code peer output.
+ -- front-end warnings when we are getting CodePeer output.
Reset_Style_Check_Options;
end if;
end if;
end Check_Bad_Body;
- --------------------
- -- Check_Rep_Info --
- --------------------
-
- procedure Check_Rep_Info is
- begin
- if List_Representation_Info /= 0
- or else List_Representation_Info_Mechanisms
- then
- Set_Standard_Error;
- Write_Eol;
- Write_Str
- ("cannot generate representation information, no code generated");
- Write_Eol;
- Write_Eol;
- Set_Standard_Output;
- end if;
- end Check_Rep_Info;
-
-------------------------
-- Check_Library_Items --
-------------------------
Walk;
end Check_Library_Items;
+ --------------------
+ -- Check_Rep_Info --
+ --------------------
+
+ procedure Check_Rep_Info is
+ begin
+ if List_Representation_Info /= 0
+ or else List_Representation_Info_Mechanisms
+ then
+ Set_Standard_Error;
+ Write_Eol;
+ Write_Str
+ ("cannot generate representation information, no code generated");
+ Write_Eol;
+ Write_Eol;
+ Set_Standard_Output;
+ end if;
+ end Check_Rep_Info;
+
-- Start of processing for Gnat1drv
begin
-- nested blocks, so that the outer one handles unrecoverable error.
begin
+ -- Initialize all packages. For the most part, these initialization
+ -- calls can be made in any order. Exceptions are as follows:
+
-- Lib.Initialize need to be called before Scan_Compiler_Arguments,
-- because it initializes a table filled by Scan_Compiler_Arguments.
Urealp.Initialize;
Errout.Initialize;
Namet.Initialize;
+ SCOs.Initialize;
Snames.Initialize;
Stringt.Initialize;
Inline.Initialize;
+ Par_SCO.Initialize;
Sem_Ch8.Initialize;
Sem_Ch12.Initialize;
Sem_Ch13.Initialize;
elsif Main_Kind in N_Generic_Renaming_Declaration then
Back_End_Mode := Generate_Object;
+ -- It's not an error to generate SCIL for e.g. a spec which has a body
+
+ elsif CodePeer_Mode then
+ Back_End_Mode := Generate_Object;
+
-- In all other cases (specs which have bodies, generics, and bodies
-- where subunits are missing), we cannot generate code and we generate
-- a warning message. Note that generic instantiations are gone at this
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