On 5/16/2010 4:15 PM, Walter Bright wrote:
> bearophile wrote:
>> DMD compiler doesn't perform many optimizations,
>
> This is simply false. DMD does an excellent job with integer and pointer
> operations. It does a so-so job with floating point.
>
> There are probably over a thousand optimizatio
Walter Bright:
> This is simply false. DMD does an excellent job with integer and pointer
> operations. It does a so-so job with floating point.
> There are probably over a thousand optimizations at all levels that dmd does
> with integer and pointer code.
You are of course right, I understand y
bearophile wrote:
DMD compiler doesn't perform many optimizations,
This is simply false. DMD does an excellent job with integer and pointer
operations. It does a so-so job with floating point.
There are probably over a thousand optimizations at all levels that dmd does
with integer and poin
Don wrote:
bearophile wrote:
kai:
Any ideas? Am I somehow not hitting a vital compiler optimization?
DMD compiler doesn't perform many optimizations, especially on
floating point computations.
More precisely:
In terms of optimizations performed, DMD isn't too far behind gcc. But
it perfor
On 16/05/10 21:43, bearophile wrote:
Do you know if it's possible to replace typeof(f1) with f1.typeof in D (for
symmetry with sizeof too)?
import std.stdio: writeln;
struct Foo {
int x;
}
void main() {
Foo f1;
int fsize = f1.sizeof; // OK
alias typeof(f1) T1; // OK
div0 wrote:
> Jérôme M. Berger wrote:
>> div0 wrote:
>>> Jérôme M. Berger wrote:
That depends. In C/C++, the default value for any global variable
is to have all bits set to 0 whatever that means for the actual data
type.
>>> No it's not, it's always uninitialized.
>>>
>> Ac
Do you know if it's possible to replace typeof(f1) with f1.typeof in D (for
symmetry with sizeof too)?
import std.stdio: writeln;
struct Foo {
int x;
}
void main() {
Foo f1;
int fsize = f1.sizeof; // OK
alias typeof(f1) T1; // OK
alias f1.typeof T2;// ERR
}
[What I
"div0" wrote:
Jérôme M. Berger wrote:
That depends. In C/C++, the default value for any global variable
is to have all bits set to 0 whatever that means for the actual data
type.
Ah, I only do C++, where the standard is to not initialise.
No, in C++ all *global or static* variables are zero-
On 5/16/2010 10:46 PM, negerns wrote:
Why is the definition of 'siginfo_t' in
druntime\import\core\sys\posix\signal.d commented out?
BTW, I'm using dmd 2.046 on windows vista 32-bit.
- siginfo_t is only for posix/linux; can't use it in windows.
- siginfo_t isn't really used by gregorian.d but t
Why is the definition of 'siginfo_t' in
druntime\import\core\sys\posix\signal.d commented out?
BTW, I'm using dmd 2.046 on windows vista 32-bit.
I got the following error messages. The file test.d is just
int main(string[] args) {
return 0;
}
and gregorian.d is from the latest svn trunk.
Compile: dmd test.d gregorian.d
D:\projects\dmd\dmd2\windows\bin\..\..\src\druntime\import\core\sys\posix\signal.d(25):
Error: identifier 'siginf
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Jérôme M. Berger wrote:
> div0 wrote:
>> Jérôme M. Berger wrote:
>>> That depends. In C/C++, the default value for any global variable
>>> is to have all bits set to 0 whatever that means for the actual data
>>> type.
>> No it's not, it's always u
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