llvm dev - Sep 2012 - [LLVMdev] [Questions] clang cross compilation and SimpleScalar simulation

Hello,

I want to compile MiBench by clang, and the target-ISA is armv4. The code
generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version
2.95.2), simulator is sim-panalyzer 2.0.3 .

I use these commends:

$ clang -O3 -o hello.ll -c -emit-llvm hello.c
$ llc -O3 -o hello.s -march=arm -mcpu=strongarm1100 hello.ll
$ arm-linux-gcc -O3 -march=armv4 -mcpu=strongarm1100 -static
-mfloat-abi=soft hello.s -o hello

Unfortunately, I get some error messages:

hello.s: Assembler messages:
hello.s:1: Error: Unknown pseudo-op:  `.syntax'
hello.s:2: Error: Unknown pseudo-op:  `.eabi_attribute'
hello.s:3: Error: Unknown pseudo-op:  `.eabi_attribute'
hello.s:4: Error: Unknown pseudo-op:  `.eabi_attribute'
hello.s:5: Error: Unknown pseudo-op:  `.eabi_attribute'
hello.s:6: Error: Unknown pseudo-op:  `.eabi_attribute'
make: *** [all] Error 1

I want to know my cross-compiling commends is right?
Is there any open source ARM simulator (can emulate power consumption) that
I can use with clang?

P.S. Because I got error when I use arm-linux-gcc (gcc version 3.X or 4.X),
I use officially recommended version 2.95,2 .

Best regards, :)

Yi-Mei Chen
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> generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version
2.95.2),
> simulator is sim-panalyzer 2.0.3 .
  LLVM/Clang 2.9 is too old. Please use LLVM/Clang 3.1 release or svn.

Regards,
chenwj

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj

I tried llvm/clang-3.1 previously. It was not work, so I use version 2.9
now.

Best regards,

Yi Mei Chen

2012/9/25 陳韋任 (Wei-Ren Chen) <chenwj at iis.sinica.edu.tw>
> > generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version
> 2.95.2),
> > simulator is sim-panalyzer 2.0.3 .
>
>   LLVM/Clang 2.9 is too old. Please use LLVM/Clang 3.1 release or svn.
>
> Regards,
> chenwj
>
> --
> Wei-Ren Chen (陳韋任)
> Computer Systems Lab, Institute of Information Science,
> Academia Sinica, Taiwan (R.O.C.)
> Tel:886-2-2788-3799 #1667
> Homepage: http://people.cs.nctu.edu.tw/~chenwj
>
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These errors are from the assembler, not LLVM. Specifically, your binutils is
too old. Given that it doesn't even recognize the ".syntax"
directive, they're *very* much too old. You need to upgrade.
-Jim


On Sep 24, 2012, at 3:31 AM, 陳奕梅 <ymchen at sslab5.cs.nctu.edu.tw> wrote:
> Hello,
> 
> I want to compile MiBench by clang, and the target-ISA is armv4. The code
generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version 2.95.2),
simulator is sim-panalyzer 2.0.3 .
> 
> I use these commends:
> 
> $ clang -O3 -o hello.ll -c -emit-llvm hello.c
> $ llc -O3 -o hello.s -march=arm -mcpu=strongarm1100 hello.ll
> $ arm-linux-gcc -O3 -march=armv4 -mcpu=strongarm1100 -static
-mfloat-abi=soft hello.s -o hello
> 
> Unfortunately, I get some error messages:
> 
> hello.s: Assembler messages:
> hello.s:1: Error: Unknown pseudo-op:  `.syntax'
> hello.s:2: Error: Unknown pseudo-op:  `.eabi_attribute'
> hello.s:3: Error: Unknown pseudo-op:  `.eabi_attribute'
> hello.s:4: Error: Unknown pseudo-op:  `.eabi_attribute'
> hello.s:5: Error: Unknown pseudo-op:  `.eabi_attribute'
> hello.s:6: Error: Unknown pseudo-op:  `.eabi_attribute'
> make: *** [all] Error 1
> 
> I want to know my cross-compiling commends is right?
> Is there any open source ARM simulator (can emulate power consumption) that
I can use with clang?
> 
> P.S. Because I got error when I use arm-linux-gcc (gcc version 3.X or 4.X),
I use officially recommended version 2.95,2 .
> 
> Best regards, :)
> 
> Yi-Mei Chen 
> 
> _______________________________________________
> 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,

On Tue, Sep 25, 2012 at 10:52:58AM -0700, Jim Grosbach
wrote:
> These errors are from the assembler, not LLVM. Specifically, your binutils
is
> too old. Given that it doesn't even recognize the ".syntax"
directive, they're
> *very* much too old. You need to upgrade.
> -Jim
  She said in her previous mail,

    P.S. Because I got error when I use arm-linux-gcc (gcc version 3.X or 4.X),
    I use officially recommended version 2.95,2.

  I don't know what's her problem while using newer toolchain. :/

  奕梅，you should use latest toolchain if possible, and post your problem here
to see if it comes from LLVM/Clang or other place. Also, where do you read that
version is recommended?

Regards,
chenwj

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj