[LLVMdev] LLVM fails for inline asm with Link Time Optimization

[Ashish Saxena]

Ah , I thought that there is issue while parsing inline asm in function
bodies , here are some of instruction where it cribs . Can you make out
something of it ?

I am going to try out -no-integrated-as option . Not sure if it will help ?

*LLVM ERROR: Error parsing inline asm*

1><inline asm>:1:17 : error 0: unexpected token in argument list

1>        mov ebx, dword ptr 16(%esp)

1>                       ^

1><inline asm>:2:17 : error 0: unexpected token in argument list

1>        mov edi, dword ptr 24(%esp)

1>                       ^

1><inline asm>:3:17 : error 0: unexpected token in argument list

1>        mov esi, dword ptr 28(%esp)

1>                       ^

1><inline asm>:4:21 : error 0: invalid token in expression

1>        movq mm1, [edi+ebx-$8]

1>                           ^

1><inline asm>:5:12 : error 0: invalid operand for instruction

1>        pxor mm0, mm0


Thanks

Ashish

On Fri, Mar 27, 2015 at 8:21 PM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:

> If you are getting a parse error it is very likely a different bug. In
> that bug the issue is that we don't parse the function bodies to find
> if some inline in them defines (or uses) a given symbol.
>
> On 26 March 2015 at 13:30, Ashish Saxena <ashishcseitbhu at gmail.com> wrote:
> > Thanks for response Francois . Do you have any pointers on what can be
> the
> > issue here or something I can try out. I saw similar active bug in llvm
> > database
> >
> > https://llvm.org/bugs/show_bug.cgi?id=5623
> >
> > Thanks
> > Ashish
> >
> > On Thu, Mar 26, 2015 at 10:52 PM, Francois Pichet <pichet2000 at gmail.com>
> > wrote:
> >>
> >>
> >>
> >> On Wed, Mar 25, 2015 at 4:47 PM, Ashish Saxena <
> ashishcseitbhu at gmail.com>
> >> wrote:
> >>>
> >>> Hi ,
> >>>     I am trying to enable link time optimization for my projects. Few
> of
> >>> them has inline assembly which works perfectly with clang/llvm but on
> >>> enabling LTO I get following error
> >>>
> >>> LLVM ERROR: Error parsing inline asm
> >>>
> >>> <inline asm>:103:2 : error 0: unknown use of instruction mnemonic
> without
> >>> a size suffix
> >>> <inline asm>:104:16 : error 0: invalid operand for instruction
> >>> <inline asm>:106:17 : error 0: unexpected token in argument list
> >>>
> >>> & so on
> >>>
> >>> Is this a known issue ? Any workaround for this ?
> >>
> >>
> >>
> >> My experience is that LTO doesn't break inline assembly.
> >
> >
> >
> > _______________________________________________
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> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> >
>
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