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From: Adriaan van Os
Subject: New (gpc-20060325)
Date: 29 Mar 2006, 08:09:38

Waldek Hebisch wrote:

> Adriaan van Os wrote:
>> Waldek Hebisch wrote:
>>> BTW: if the same happens with standalone program (without modules)
>>> I should be able to reproduce it.
>>
>> Sorry, not clear to me what you mean.
>
> I have build a cross-compiler targetting Mac OSX. However, I do not
> have the complete toolchain (only bare compiler). Without full
> toolchain I can not compile RTS (the problem really is configure) and
> also I can not compile anything using GPC module.
>
> If you have a testcase which does not use GPC module (directy or
> indirectly) I should be able to compile it. In fact, if a program uses
> no extra modules (units) at all debugging becomes easier.
>
> I have tried the cross-compiler on various test programs and ATM it
> happily produced stabs debug info.

OK, I understand, I will look for a testcase (or try to isolate the 
problem).

> I have noticed a problem, namely
> on `emil3.pas' at -O0 I get ice:
>
> ../gpc-4-osx/gcc/xgpc -B../gpc-4-osx/gcc -static -S emil3.pas
>
>  main program
> emil3.pas: In main program:
>
> emil3.pas:12: error: unrecognizable insn:
> (insn 28 27 29 1 (set (reg:DF 142 [ D.587 ])
>         (subreg:DF (mem/i:DC (lo_sum:SI (reg/f:SI 155)
>                     (symbol_ref:SI ("C") [flags 0x182] <var_decl 
> 0x2a9594cdd0 C>)) [0 C+0 S16 A64]) 0)) -1 (nil)
>     (expr_list:REG_DEAD (reg/f:SI 155)
>         (nil)))
> emil3.pas:12: internal compiler error: in extract_insn, at recog.c:2020
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://www.gnu-pascal.de/todo.html> for instructions.
>
> This ICE goes away with -fPIC or -mdynamic-no-pic (also any 
> optimization
> option or -m64 helps). I see this ICE both with 4.0 and 3.4.6 backend.

Yes, fully reproducable, also with older snapshots and back-ends, e.g.

[G5:gcc/p/test] adriaan% gpc332d1 emil3.pas --no-pic
emil3.pas: In main program:
emil3.pas:12: error: unrecognizable insn:
(insn 23 22 24 0 0x0 (set (reg:DF 126)
         (subreg:DF (mem/f:DC (lo_sum:SI (reg/f:SI 124)
                     (symbol_ref:SI ("!D__C"))) [0 C+0 S16 A64]) 0)) -1 
(nil)
     (expr_list:REG_DEAD (reg/f:SI 124)
         (nil)))
emil3.pas:12: internal compiler error: in extract_insn, at recog.c:2175

[G5:gcc/p/test] adriaan% gpc332d1 -v
Reading specs from 
/Developer/Pascal/gpc332d1/lib/gcc-lib/powerpc-apple-darwin/3.3.2/specs
Configured with: ../gpc-332d1/configure --enable-languages=pascal,c 
--prefix=/Developer/Pascal/gpc332d1 --enable-threads=posix 
--target=powerpc-apple-darwin
Thread model: posix
gpc version 20030830, based on gcc-3.3.2

Regards,

Adriaan van Os

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