On Wednesday, 29 December 2021 at 17:20:59 UTC, max haughton
wrote:
This is handled by the compiler backend. The simplest way it
can do this kind of optimization is by "inlining" the function.
This is done by transplanting the function body into the place
it's used. At this point the compiler
On Wednesday, 29 December 2021 at 16:51:47 UTC, rempas wrote:
On Wednesday, 29 December 2021 at 16:27:22 UTC, max haughton
wrote:
Inlining + constant propagation. Fancier iterations on those
exist too but 90% of the speedup will come from those since
for it to matter they likely would've been
On Wednesday, 29 December 2021 at 16:27:22 UTC, max haughton
wrote:
Inlining + constant propagation. Fancier iterations on those
exist too but 90% of the speedup will come from those since for
it to matter they likely would've been used in first place.
Sounds like black magic? So If I write
On Wednesday, 29 December 2021 at 15:53:38 UTC, rempas wrote:
On Wednesday, 29 December 2021 at 11:09:04 UTC, max haughton
wrote:
If the value is known at compile time the compiler can pretty
easily do that for you unless you're really unlucky.
How is this even possible?
Inlining + constant
On Wednesday, 29 December 2021 at 14:49:40 UTC, Steven
Schveighoffer wrote:
On 12/29/21 3:55 AM, rempas wrote:
Thanks! That's cool but I don't want this to be this way. Or
at least I want it to be able to take a default value so we
don't have to get passed all the time.
OK:
```
extern (C)
On Wednesday, 29 December 2021 at 11:09:04 UTC, max haughton
wrote:
If the value is known at compile time the compiler can pretty
easily do that for you unless you're really unlucky.
How is this even possible?
On 12/29/21 3:56 AM, rempas wrote:
On Tuesday, 28 December 2021 at 22:26:33 UTC, max haughton wrote:
Why do you need this? What's wrong with a normal branch in this case.
Runtime performance. I want the value to get checked at compile time and
use "static if" with it
Oof, just let the
On 12/29/21 3:55 AM, rempas wrote:
Thanks! That's cool but I don't want this to be this way. Or at least I
want it to be able to take a default value so we don't have to get
passed all the time.
OK:
```
extern (C) void main() {
void print_num(int mul = 100)(int num) {
static if
On Wednesday, 29 December 2021 at 08:56:47 UTC, rempas wrote:
On Tuesday, 28 December 2021 at 22:26:33 UTC, max haughton
wrote:
Why do you need this? What's wrong with a normal branch in
this case.
Runtime performance. I want the value to get checked at compile
time and use "static if" with
On Wednesday, 29 December 2021 at 01:34:22 UTC, Stanislav Blinov
wrote:
One can also do this kind of stuff:
```d
import core.stdc.stdio;
struct Literal(alias val)
{
enum value = val;
}
enum lit(alias val) = Literal!val.init;
void print_num(Arg)(int num, Arg mul)
{
static if (is(Arg
On Tuesday, 28 December 2021 at 22:26:33 UTC, max haughton wrote:
Why do you need this? What's wrong with a normal branch in this
case.
Runtime performance. I want the value to get checked at compile
time and use "static if" with it
On Tuesday, 28 December 2021 at 22:06:50 UTC, Steven
Schveighoffer wrote:
On 12/28/21 4:19 PM, rempas wrote:
Here:
```
extern (C) void main() {
void print_num(int mul)(int num) {
static if (is(mul == ten)) {
printf("%d\n", num * 10);
} else static if (is(mul == three)) {
On Tuesday, 28 December 2021 at 22:30:30 UTC, Ali Çehreli wrote:
On 12/28/21 2:06 PM, Steven Schveighoffer wrote:
void print_num(int mul)(int num) {
Wasn't there a way of telling whether an 'auto ref' parameter
is copied or not?
void print_num()(int num, auto ref int mul) {
// ?
}
On 12/28/21 2:06 PM, Steven Schveighoffer wrote:
void print_num(int mul)(int num) {
Wasn't there a way of telling whether an 'auto ref' parameter is copied
or not?
void print_num()(int num, auto ref int mul) {
// ?
}
And that would indicate that the argument was an rvalue?
I
On Tuesday, 28 December 2021 at 21:19:29 UTC, rempas wrote:
I would like to know if that's possible. Actually I would like
to do something like the following:
```
extern (C) void main() {
void print_num(int num, comp_time_type int mul) {
static if (is(mul == ten)) {
printf("%d\n",
On 12/28/21 4:19 PM, rempas wrote:
Here:
```
extern (C) void main() {
void print_num(int mul)(int num) {
static if (is(mul == ten)) {
printf("%d\n", num * 10);
} else static if (is(mul == three)) {
printf("%d\n", num * 3);
} else {
printf("%d\n", num);
On Tuesday, 28 December 2021 at 21:19:29 UTC, rempas wrote:
I would like to know if that's possible. Actually I would like
to do something like the following:
```
extern (C) void main() {
void print_num(int num, comp_time_type int mul) {
static if (is(mul == ten)) {
printf("%d\n",
I would like to know if that's possible. Actually I would like to
do something like the following:
```
extern (C) void main() {
void print_num(int num, comp_time_type int mul) {
static if (is(mul == ten)) {
printf("%d\n", num * 10);
} else static if (is(mul == three)) {
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