llvm dev - May 2012 - [LLVMdev] JIT support for inline asm on Linux

On 5/7/2012 12:21 AM, Bendersky, Eli wrote:
<snip>
>
> MCJIT is functional in trunk (and the 3.1 branch). While it doesn't
include all the features of the old JIT quite yet, it's complete enough to
pass all of JIT's execution tests on Linux and Mac OS X (no Windows yet). As
for directions on how to enable it, follow the path of the "use-mcjit"
flag passed to lli (in tools/lli/lli.cpp).
>
I tried to load my bitcode library using lli but it gave a new error now:
> $lli -entry-function="ISimEngine_GetVersion" -use-mcjit
libengine.bc
> LLVM ERROR: Inline asm not supported by this streamer because we don't
have an asm parser for this target
I also tried other variations of the call with the same
result:
> $lli -entry-function="ISimEngine_GetVersion" -use-mcjit
-mattr=+avx -mcpu=corei7-avx libengine.bc
I updated my program looking at lli.cpp and it also gave the same error 
as above. The info from lli --version is below:
> $lli --version
> LLVM (http://llvm.org/):
>   LLVM version 3.2svn
>   Optimized build with assertions.
>   Built May  7 2012 (10:54:43).
>   Default target: x86_64-unknown-linux-gnu
>   Host CPU: corei7-avx
Any pointers? I saw another thread "Trouble using the MCJIT: "Target 
does not support MC emission" error" but that didnt seem to have 
positive ending.

TIA,
Ashok

> On 5/7/2012 12:21 AM, Bendersky, Eli wrote:
> <snip>
> >
> > MCJIT is functional in trunk (and the 3.1 branch). While it
doesn't include all
> the features of the old JIT quite yet, it's complete enough to pass all
of JIT's
> execution tests on Linux and Mac OS X (no Windows yet). As for directions
> on how to enable it, follow the path of the "use-mcjit" flag
passed to lli (in
> tools/lli/lli.cpp).
> >
> 
> I tried to load my bitcode library using lli but it gave a new error now:
> 
> > $lli -entry-function="ISimEngine_GetVersion" -use-mcjit
libengine.bc
> > LLVM ERROR: Inline asm not supported by this streamer because we
don't
> > have an asm parser for this target
> 
> I also tried other variations of the call with the same result:
> > $lli -entry-function="ISimEngine_GetVersion" -use-mcjit
-mattr=+avx
> > -mcpu=corei7-avx libengine.bc
> 
> I updated my program looking at lli.cpp and it also gave the same error as
> above. The info from lli --version is below:
> 
> > $lli --version
> > LLVM (http://llvm.org/):
> >   LLVM version 3.2svn
> >   Optimized build with assertions.
> >   Built May  7 2012 (10:54:43).
> >   Default target: x86_64-unknown-linux-gnu
> >   Host CPU: corei7-avx
> 
> Any pointers? I saw another thread "Trouble using the MCJIT:
"Target does
> not support MC emission" error" but that didnt seem to have
positive
> ending.
> 
Sorry, I'm not familiar with these parts (ASM parsing in MC). Perhaps
someone else could help here. I wonder, though, did you manage to get some code
running without inline ASM?
Eli



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On 5/7/2012 10:17 PM, Bendersky, Eli wrote:
<snip>
>>> $lli -entry-function="ISimEngine_GetVersion" -use-mcjit
libengine.bc
>>> LLVM ERROR: Inline asm not supported by this streamer because we
don't
>>> have an asm parser for this target
>>
>> I also tried other variations of the call with the same result:
>>> $lli -entry-function="ISimEngine_GetVersion" -use-mcjit
-mattr=+avx
>>> -mcpu=corei7-avx libengine.bc
>>
>> I updated my program looking at lli.cpp and it also gave the same error
as
>> above. The info from lli --version is below:
>>
>>> $lli --version
>>> LLVM (http://llvm.org/):
>>>    LLVM version 3.2svn
>>>    Optimized build with assertions.
>>>    Built May  7 2012 (10:54:43).
>>>    Default target: x86_64-unknown-linux-gnu
>>>    Host CPU: corei7-avx
>>
>> Any pointers? I saw another thread "Trouble using the MCJIT:
"Target does
>> not support MC emission" error" but that didnt seem to have
positive
>> ending.
>>
>
> Sorry, I'm not familiar with these parts (ASM parsing in MC). Perhaps
someone else could help here. I wonder, though, did you manage to get some code
running without inline ASM?
> Eli
I tried the attached program, compiled with clang and used lli to run it:
clang -cc1 -O0 -g -emit-llvm test.c
lli -use-mcjit test.ll

The lli prints out what looks like binary data. If I remove the inline 
asm from the program, it works fine.

TIA,
Ashok
-------------- next part --------------
//#include <stdio.h>

/*
void f(void)
{
}
*/

int main(void)
{
        int foo = 10, bar = 15;
        __asm__ __volatile__("addl  %%ebx,%%eax"
                             :"=a"(foo)
                             :"a"(foo), "b"(bar)
                             );
        //printf("foo+bar=%d\n", foo);
        return 0;
}