llvm dev - Sep 2013 - [LLVMdev] ARM integrated assembler - unknown directive errors

Hiya

I am trying to compile a test case with latest LLVM 3.3 release using integrated
assembler. I have looked through previous mailing discussion on this subject and
it appears that perhaps by now the appropriate changes are checked-in however my
test case is failing. Maybe I am missing something and not specifying
appropriate options on the commandline.

My setup:

Host operating System: Ubuntu 12
Cross toolchain: built latest release 3.3

If I need to provide more info please let me know


Cheers


test.c: 
void main {return;}

commandline:
arm-linux-clang
-Iarm-2013.05-24-arm-none-linux/arm-none-linux-gnueabi/libc/usr/include
-integrated-as -msoft-float -save-temps -O3 -mcpu=cortex-a8 -c -o test.o test.c

Errors:
ffconf.rmzKnl5U.s:2:2: error: unknown directive
        .cpu cortex-a8
        ^
ffconf.rmzKnl5U.s:3:2: error: unknown directive
        .eabi_attribute 6, 10
        ^
  
 		 	   		  
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Hi,
> arm-linux-clang
> -Iarm-2013.05-24-arm-none-linux/arm-none-linux-gnueabi/libc/usr/include
> -integrated-as -msoft-float -save-temps -O3 -mcpu=cortex-a8 -c -o test.o
> test.c
Hmm. It looks like save-temps is interfering with integrated-as.
What's happening is that Clang is quite capable of taking those
directives from CodeGen and putting them in an object file (the normal
integrated-as route) but can't parse them from a .s file.

When both integrated-as and keep-temps are specified Clang outputs a
real .s file and then (because it's been told to use itself as the
assembler) tries to reparse it. And fails.

We seem to have a bug for the .eabi_attribute one
(http://llvm.org/bugs/show_bug.cgi?id=15172), but not the .cpu one.

Cheers.

Tim.

On 9 September 2013 12:15, Tim Northover <t.p.northover at gmail.com>
wrote:
> We seem to have a bug for the .eabi_attribute one
> (http://llvm.org/bugs/show_bug.cgi?id=15172), but not the .cpu one.
>
I changed the title to include all EABI attributes (to cover all that are
missing).

I also added Rehman's email as an easy way to reproduce the problem.

Thanks!
--renato
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