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digitalmars.D.bugs - [Issue 7867] New: -S compiler switch to output asm

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7867

           Summary: -S compiler switch to output asm
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: bearophile_hugs eml.cc


--- Comment #0 from bearophile_hugs eml.cc 2012-04-08 17:41:29 PDT ---
Looking at the asm produced by a system language is often useful, to know if a
function was inlined, to see if the compiler has done certain expected
optimizations, to verify certain compiler bugs, to compare the quality of a D
compiler to a C or C++ compiler on similar code, to learn to write assembly,
and so on.

There are some ways to read the asm produced by the D compiler (like using
obj2asm) but I suggest to add to DMD a compiler switch similar to "-S" of GCC
to output the asm from the compiler itself.

There was a request for it in D.learn too:
http://forum.dlang.org/thread/hnmcepsrvpifhdzkeetf forum.dlang.org

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parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7867


yebblies <yebblies gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |yebblies gmail.com
         Resolution|                            |WONTFIX


--- Comment #1 from yebblies <yebblies gmail.com> 2012-10-29 03:29:10 EST ---
Unlike gcc, the dmd backend generates machine code directly instead of
generating assembly.  You would need to pass the code through a disassembler in
order to display the assembly.

This is never going to happen, especially given how easy it is to just use
objconv/objdump.

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