Compile with -vasm to see it! Enjoy!

For the file test.d:

  int demo(int x)
  {
    return x * x;
  }

Compiling with:

  dmd test.d -c -vasm

prints:

  _D4test4demoFiZi:
  0000:   89 F8                   mov     EAX,EDI
  0002:   0F AF C0                imul    EAX,EAX
  0005:   C3                      ret


https://github.com/dlang/dmd/pull/13447

On Friday, 7 January 2022 at 21:41:55 UTC, Walter Bright wrote:
> Compile with -vasm to see it! Enjoy!

Oh very nice! I need to finish my debugger/disassembler project.

On Friday, 7 January 2022 at 21:41:55 UTC, Walter Bright wrote:
> Compile with -vasm to see it! Enjoy!
>
> For the file test.d:
>
>   int demo(int x)
>   {
>     return x * x;
>   }
>
> Compiling with:
>
>   dmd test.d -c -vasm
>
> prints:
>
>   _D4test4demoFiZi:
>   0000:   89 F8                   mov     EAX,EDI
>   0002:   0F AF C0                imul    EAX,EAX
>   0005:   C3                      ret
>
>
> https://github.com/dlang/dmd/pull/13447

Wow, very useful! This feature surely lowers the bar to check the disassembly when optimising. Thanks!

I'm slightly disappointed it does not output the asm inlined to D code but that's just my daydreaming with no practical reasons to back it up.

On Friday, 7 January 2022 at 21:41:55 UTC, Walter Bright wrote:
>   0000:   89 F8                   mov     EAX,EDI

Feature request: octal.

On Friday, 7 January 2022 at 21:41:55 UTC, Walter Bright wrote:
> Compile with -vasm to see it! Enjoy!
>
> For the file test.d:
>
>   int demo(int x)
>   {
>     return x * x;
>   }
>
> Compiling with:
>
>   dmd test.d -c -vasm
>
> prints:
>
>   _D4test4demoFiZi:
>   0000:   89 F8                   mov     EAX,EDI
>   0002:   0F AF C0                imul    EAX,EAX
>   0005:   C3                      ret
>
>
> https://github.com/dlang/dmd/pull/13447

Thanks Walter. This is quite useful. Will put it through its paces. Already spotted some print formatting weirdness; will send as bug reports.

~Brian

On 07.01.22 22:41, Walter Bright wrote:
> Compile with -vasm to see it! Enjoy!

With feature creep in full swing now, when can I expect to read my email with DMD?

On Sat, Jan 08, 2022 at 07:39:54AM +0100, ag0aep6g via Digitalmars-d-announce wrote:
> On 07.01.22 22:41, Walter Bright wrote:
> > Compile with -vasm to see it! Enjoy!
> 
> With feature creep in full swing now, when can I expect to read my email with DMD?

You already can:

	echo 'import std;void main(){execute("/usr/bin/mail");}' | dmd -run -

:-P


T

-- 
"Real programmers can write assembly code in any language. :-)" -- Larry Wall

On Friday, 7 January 2022 at 21:41:55 UTC, Walter Bright wrote:
> Compile with -vasm to see it! Enjoy!
>
> For the file test.d:
>
>   int demo(int x)
>   {
>     return x * x;
>   }
>
> Compiling with:
>
>   dmd test.d -c -vasm
>
> prints:
>
>   _D4test4demoFiZi:
>   0000:   89 F8                   mov     EAX,EDI
>   0002:   0F AF C0                imul    EAX,EAX
>   0005:   C3                      ret
>
>
> https://github.com/dlang/dmd/pull/13447

Nice!

On Friday, 7 January 2022 at 21:41:55 UTC, Walter Bright wrote:
> Compile with -vasm to see it! Enjoy!
>
> For the file test.d:
>
>   int demo(int x)
>   {
>     return x * x;
>   }
>
> Compiling with:
>
>   dmd test.d -c -vasm
>
> prints:
>
>   _D4test4demoFiZi:
>   0000:   89 F8                   mov     EAX,EDI
>   0002:   0F AF C0                imul    EAX,EAX
>   0005:   C3                      ret
>
>
> https://github.com/dlang/dmd/pull/13447

Great news, this worth a hn / reddit post!

Kind regards
Andre

On Friday, 7 January 2022 at 21:41:55 UTC, Walter Bright wrote:
> Compile with -vasm to see it! Enjoy!
>
> [snip]

Would make a nice project for someone to integrate this into run.dlang.org