llvm dev - Nov 2012 - [LLVMdev] Unable to Run Inline Asm with MCJIT

Hi,

I am first year PhD student at Stony Brook University. For one of my projects I
am trying to JIT compile and run a C program containing inline assembly using
MCJIT but I am not able to.

I have cloned and build LLVM-3.1. Below are more details.

Arch : x86
OS :  Linux ubuntu 2.6.35-22-generic

Sample program : test_inline_asm.c
-------------------
#include <stdio.h>
int main(){
    int a=0;
    __asm __volatile("movl $5,%%eax\t"
    "\n movl
%%eax,%0":"=r"(a)::"cc","memory"
    );
    printf("a= %d\n",a);
}

Commands
-------------
clang -emit-llvm -S test_inline_asm.c
lli -use-mcjit test_inline_asm.s

throws,

LLVM ERROR: Inline asm not supported by this streamer because we don't have
an asm parser for this target

Any pointers to what mistake I have been doing.Any help would be much
appreciated.

Thanks & Regards,
Amit Arya
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Hi Amit,

You're not doing anything wrong. This is an error in 'lli' not
properly initializing the native target libraries. Fixed in SVN trunk r167392.

-Jim

On Nov 4, 2012, at 4:09 PM, Amit Arya <aarya at cs.stonybrook.edu> wrote:
> Hi,
> 
> I am first year PhD student at Stony Brook University. For one of my
projects I am trying to JIT compile and run a C program containing inline
assembly using MCJIT but I am not able to.
> 
> I have cloned and build LLVM-3.1. Below are more details.
> 
> Arch : x86 
> OS :  Linux ubuntu 2.6.35-22-generic
> 
> Sample program : test_inline_asm.c
> -------------------
> #include <stdio.h>
> int main(){
>     int a=0;
>     __asm __volatile("movl $5,%%eax\t"
>     "\n movl
%%eax,%0":"=r"(a)::"cc","memory"
>     );
>     printf("a= %d\n",a);
> }
> 
> Commands 
> -------------
> clang -emit-llvm -S test_inline_asm.c
> lli -use-mcjit test_inline_asm.s
> 
> throws,
> 
> LLVM ERROR: Inline asm not supported by this streamer because we don't
have an asm parser for this target
> 
> Any pointers to what mistake I have been doing.Any help would be much
appreciated.
> 
> Thanks & Regards,
> Amit Arya
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
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Hi Jim,

Thanks for the reply. I was able to figure out the problem in 'lli'.
InitializeNativeTargetAsmParser() was missing in lli.
I should have replied back saying that the problem was resolved. Hope I
didn't waste your time.

Regards,
Amit
________________________________
From: Jim Grosbach [grosbach at apple.com]
Sent: Monday, November 05, 2012 2:07 PM
To: Amit Arya
Cc: LLVM Developers Mailing List; Varinder Singh
Subject: Re: [LLVMdev] Unable to Run Inline Asm with MCJIT

Hi Amit,

You're not doing anything wrong. This is an error in 'lli' not
properly initializing the native target libraries. Fixed in SVN trunk r167392.

-Jim

On Nov 4, 2012, at 4:09 PM, Amit Arya <aarya at
cs.stonybrook.edu<mailto:aarya at cs.stonybrook.edu>> wrote:

Hi,

I am first year PhD student at Stony Brook University. For one of my projects I
am trying to JIT compile and run a C program containing inline assembly using
MCJIT but I am not able to.

I have cloned and build LLVM-3.1. Below are more details.

Arch : x86
OS :  Linux ubuntu 2.6.35-22-generic

Sample program : test_inline_asm.c
-------------------
#include <stdio.h>
int main(){
    int a=0;
    __asm __volatile("movl $5,%%eax\t"
    "\n movl
%%eax,%0":"=r"(a)::"cc","memory"
    );
    printf("a= %d\n",a);
}

Commands
-------------
clang -emit-llvm -S test_inline_asm.c
lli -use-mcjit test_inline_asm.s

throws,

LLVM ERROR: Inline asm not supported by this streamer because we don't have
an asm parser for this target

Any pointers to what mistake I have been doing.Any help would be much
appreciated.

Thanks & Regards,
Amit Arya
_______________________________________________
LLVM Developers mailing list
LLVMdev at cs.uiuc.edu<mailto:LLVMdev at cs.uiuc.edu>        
http://llvm.cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

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