Op Thu, 7 Jul 2011, schreef Chad Berchek:
The problem comes down to the specs though, or rather the lack thereof. As I
have searched the web and read some docs at Embarcadero, things have only
become more ambiguous.
You are looking in the wrong places. Both Turbo Pascal and Delphi came
On 08/07/2011 11:05, Jonas Maebe wrote:
On 08 Jul 2011, at 05:51, Chad Berchek wrote:
I'm more interested now in a solution. The solutions I've seen so far
have potential, but in my opinion most of them seem like they are
more complex, would be more overhead, and produce worse performance
Am 08.07.2011 12:05, schrieb Jonas Maebe:
However, looking at the generated assembly, I can't believe there
isn't a more efficient way to handle the implicit try-finally. It
feels to me like that is where the problem is. There is a lot of code
and several function calls that go into implementing
Martin schrieb:
c) keep the current behaviour, but add functionality to the compiler
to help debug problems that can occur as a result of problems that can
occur as a result of this behaviour
Concrete: add means to ignore const with managed types.
Further debugging aids as far as feasable.
On Friday 08 July 2011 12:05:02 Jonas Maebe wrote:
The main problem here is that FPC's exception handling is based on
setjump/longjump. This technique has a relatively high overhead for
try, but low overhead when an exception actually occurs (of course,
since exceptions are supposed to
membar and stbar are instructions available as of sparc v9. To get fpc
running on a sparc v9 I have commented out
def_system_macro('FPC_HAS_MEMBAR'); in compiler/options.pas. Is there a
command line option that does the same?
Ludo
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2011/7/8 Ludo Brands ludo.bra...@free.fr:
membar and stbar are instructions available as of sparc v9. To get fpc
running on a sparc v9 I have commented out
def_system_macro('FPC_HAS_MEMBAR'); in compiler/options.pas. Is there a
command line option that does the same?
maybe -uFPC_HAS_MEMBAR.
maybe -uFPC_HAS_MEMBAR.
Mmm. Didn't expect that a command line undefine would override a define in
the code. I'll give it a try.
Thanks, Ludo
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Ludo Brands wrote:
membar and stbar are instructions available as of sparc v9. To get fpc
running on a sparc v9 I have commented out
def_system_macro('FPC_HAS_MEMBAR'); in compiler/options.pas. Is there a
command line option that does the same?
I wonder whether this would be worth considering
Ludo Brands wrote:
membar and stbar are instructions available as of sparc v9. To get fpc
running on a sparc v9
For completeness and playing Devil's Advocate, I do have to ask whether
pre-v9 (i.e. pre-UltraSPARC) systems are relevant any more.
I've got one remaining Sun4m system
On 09/07/2011 00:09, Max Vlasov wrote:
The answer is indirect referencing. it's a workaround that probably
will solve the problem, but I must admit that I don't know what is the
exact performance price. The compiler when it detects const s:
ansistring could switch to passing not the actual
On Sat, Jul 9, 2011 at 3:14 AM, Martin f...@mfriebe.de wrote:
On 09/07/2011 00:09, Max Vlasov wrote:
The answer is indirect referencing. it's a workaround that probably
will solve the problem, but I must admit that I don't know what is the
exact performance price. The compiler when it detects
On 09/07/2011 00:59, Max Vlasov wrote:
On Sat, Jul 9, 2011 at 3:14 AM, Martinf...@mfriebe.de wrote:
function CRCConstString(constref Str: string): integer;
does what you describ
Hmm, it's interesting.. Some observations:
- constref is implemented in 2.5.1, right? Unfortunately I can not
test
Martin wrote:
- See difference to normal const is that it must be passed by
reference.
I had not read about it before, but I think constref is a huge step in
the right direction. It eliminates my fundamental grief with the current
implementation.
Specifically, the way const is now defined
On 09/07/2011 02:14, Chad Berchek wrote:
Specifically, the way const is now defined (or not...) is disturbing
because it leaves out important details. In C++, you can pass by value
or reference, or by pointer which is a value but is used to make
references. But what's important is you _always_
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