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digitalmars.D.learn - DMD/Windows: Inspect generated ASM?

reply "Stefan" <stefan schuerger.com> writes:
Hi all,

Which is the most convenient way to have a look at the ASM code 
generated by Win-dmd? Unlike gdc, dmd it has no -S option, so I 
guess I will have to disassemble .obj files.

Any good tools for this (link)? So far I only found old .obj 
tools from the 90s on the web...

Thanks,

Stefan
Apr 08 2012
next sibling parent dennis luehring <dl.soluz gmx.net> writes:
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Am 08.04.2012 14:42, schrieb Stefan:

 Hi all,

 Which is the most convenient way to have a look at the ASM code
 generated by Win-dmd? Unlike gdc, dmd it has no -S option, so I
 guess I will have to disassemble .obj files.

 Any good tools for this (link)? So far I only found old .obj
 tools from the 90s on the web...

 Thanks,

 Stefan
Apr 08 2012
prev sibling next sibling parent reply Andrej Mitrovic <andrej.mitrovich gmail.com> writes:
On 4/8/12, Stefan <stefan schuerger.com> wrote:

 Any good tools for this (link)? So far I only found old .obj
 tools from the 90s on the web...


I use objconv. http://www.agner.org/optimize/#objconv

I use this batch script to disasm an .obj file and open the .asm file:
 echo off
setlocal EnableDelayedExpansion
objconv -fnasm %~nx1 %~n1_disasm.asm && %~n1_disasm.asm

I forgot by now just how those %~ thingies work. Windows batch is a
funny language.
Apr 08 2012
parent "Stefan" <stefan schuerger.com> writes:
On Sunday, 8 April 2012 at 13:56:30 UTC, Andrej Mitrovic wrote:


 I forgot by now just how those %~ thingies work. Windows batch 
 is a
 funny language.


That's why I love cygwin, no funny percent stuff there ;-)

Cheers,
Stefan
Apr 08 2012
prev sibling parent reply "bearophile" <bearophileHUGS lycos.com> writes:
Stefan:


 Unlike gdc, dmd it has no -S option,


I'd like that. This seems a nice enhancement request for you to 
add in Bugzilla.

Bye,
bearophile
Apr 08 2012
parent "Stefan" <stefan schuerger.com> writes:
On Sunday, 8 April 2012 at 15:43:23 UTC, bearophile wrote:

 I'd like that. This seems a nice enhancement request for you to 
 add in Bugzilla.


Yup, sometimes you want to look "under the hood" of the compiler 
to tweak things a little. Or just to understand how a 64bit 
multiplication works on a IA32 machine :-)

I wonder, though, if the dmd backend has a "real" ASM stage, or 
if some intermediate code is directly translated into an opcode 
stream (like the RTL stuff in the GCC backend).

Cheers,
Stefan
Apr 08 2012