llvm dev - Oct 2013 - [LLVMdev] Feature request for include llvm-mc in llvm.org/builds

2013/10/19 Rafael Espíndola <rafael.espindola at
gmail.com>:
> On 19 October 2013 06:01, 罗勇刚(Yonggang Luo) <luoyonggang at
gmail.com> wrote:
>> I found that access llvm-mc from clang driver is impossible, and I
>> want to use llvm-mc to compile assembly files, how to do that?
>
> Try "clang -integrated-as -c test.s"
Thank you very much, I use the following command compiled successfully:
clang  -integrated-as -c -v --target=i686-pc-mingw sqrt.s


The output format is file format ELF32-i386, i wanna to know
is there a way to output COFF format along with target=i686-pc-mingw.
because I want to compile to following asm file for both linux/gcc and
windows/visual C++.

.global sqrt
.type sqrt, at function
sqrt: fldl 4(%esp)
fsqrt
fstsw %ax
sub $12,%esp
fld %st(0)
fstpt (%esp)
mov (%esp),%ecx
and $0x7ff,%ecx
cmp $0x400,%ecx
jnz 1f
and $0x200,%eax
sub $0x100,%eax
sub %eax,(%esp)
fstp %st(0)
fldt (%esp)
1: add $12,%esp
fstpl 4(%esp)
fldl 4(%esp)
ret
>
> Cheers,
> Rafael


-- 
         此致
礼
罗勇刚
Yours
    sincerely,
Yonggang Luo

I can confirm I get the same behavior, and that's a real bug.  If you use
--target=i686-pc-win32, you get COFF, and that should be a good workaround
for now.  There must be a conditional somewhere that isn't handling mingw
correctly.


On Sat, Oct 19, 2013 at 7:58 AM, 罗勇刚(Yonggang Luo) <luoyonggang at
gmail.com>wrote:
> 2013/10/19 Rafael Espíndola <rafael.espindola at gmail.com>:
> > On 19 October 2013 06:01, 罗勇刚(Yonggang Luo) <luoyonggang at
gmail.com>
> wrote:
> >> I found that access llvm-mc from clang driver is impossible, and I
> >> want to use llvm-mc to compile assembly files, how to do that?
> >
> > Try "clang -integrated-as -c test.s"
>
> Thank you very much, I use the following command compiled successfully:
> clang  -integrated-as -c -v --target=i686-pc-mingw sqrt.s
>
>
> The output format is file format ELF32-i386, i wanna to know
> is there a way to output COFF format along with target=i686-pc-mingw.
> because I want to compile to following asm file for both linux/gcc and
> windows/visual C++.
>
> .global sqrt
> .type sqrt, at function
> sqrt: fldl 4(%esp)
> fsqrt
> fstsw %ax
> sub $12,%esp
> fld %st(0)
> fstpt (%esp)
> mov (%esp),%ecx
> and $0x7ff,%ecx
> cmp $0x400,%ecx
> jnz 1f
> and $0x200,%eax
> sub $0x100,%eax
> sub %eax,(%esp)
> fstp %st(0)
> fldt (%esp)
> 1: add $12,%esp
> fstpl 4(%esp)
> fldl 4(%esp)
> ret
>
> >
> > Cheers,
> > Rafael
>
>
>
> --
>          此致
> 礼
> 罗勇刚
> Yours
>     sincerely,
> Yonggang Luo
>
> _______________________________________________
> 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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Ah, so clang only understands the spelling mingw32, not mingw.  That'll
give you COFF.  :)


On Mon, Oct 21, 2013 at 11:23 AM, Reid Kleckner <rnk at google.com> wrote:
> I can confirm I get the same behavior, and that's a real bug.  If you
use
> --target=i686-pc-win32, you get COFF, and that should be a good workaround
> for now.  There must be a conditional somewhere that isn't handling
mingw
> correctly.
>
>
> On Sat, Oct 19, 2013 at 7:58 AM, 罗勇刚(Yonggang Luo) <luoyonggang at
gmail.com>wrote:
>
>> 2013/10/19 Rafael Espíndola <rafael.espindola at gmail.com>:
>> > On 19 October 2013 06:01, 罗勇刚(Yonggang Luo) <luoyonggang at
gmail.com>
>> wrote:
>> >> I found that access llvm-mc from clang driver is impossible,
and I
>> >> want to use llvm-mc to compile assembly files, how to do that?
>> >
>> > Try "clang -integrated-as -c test.s"
>>
>> Thank you very much, I use the following command compiled successfully:
>> clang  -integrated-as -c -v --target=i686-pc-mingw sqrt.s
>>
>>
>> The output format is file format ELF32-i386, i wanna to know
>> is there a way to output COFF format along with target=i686-pc-mingw.
>> because I want to compile to following asm file for both linux/gcc and
>> windows/visual C++.
>>
>> .global sqrt
>> .type sqrt, at function
>> sqrt: fldl 4(%esp)
>> fsqrt
>> fstsw %ax
>> sub $12,%esp
>> fld %st(0)
>> fstpt (%esp)
>> mov (%esp),%ecx
>> and $0x7ff,%ecx
>> cmp $0x400,%ecx
>> jnz 1f
>> and $0x200,%eax
>> sub $0x100,%eax
>> sub %eax,(%esp)
>> fstp %st(0)
>> fldt (%esp)
>> 1: add $12,%esp
>> fstpl 4(%esp)
>> fldl 4(%esp)
>> ret
>>
>> >
>> > Cheers,
>> > Rafael
>>
>>
>>
>> --
>>          此致
>> 礼
>> 罗勇刚
>> Yours
>>     sincerely,
>> Yonggang Luo
>>
>> _______________________________________________
>> 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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