Ashish Saxena
2015-Mar-26 17:30 UTC
[LLVMdev] LLVM fails for inline asm with Link Time Optimization
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. >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150326/19c09295/attachment.html>
Rafael Espíndola
2015-Mar-27 14:51 UTC
[LLVMdev] LLVM fails for inline asm with Link Time Optimization
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. > > > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev >
Ashish Saxena
2015-Mar-27 15:40 UTC
[LLVMdev] LLVM fails for inline asm with Link Time Optimization
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. > > > > > > > > _______________________________________________ > > LLVM Developers mailing list > > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150327/d5837142/attachment.html>