[LLVMdev] How to pick default floating point ABI?

[Weitian Leung]

On 06/16/2015 06:21 PM, Daniel Sanders wrote:
>
> > > the best I can suggest is to target mips2 and O32
>
> > > It's not work for all, still get Assembler messages error on some 
> source files
> >
>
> > Warning: float register should be even, was 7
>
> Could you add –save-temps to the compiler command and send me the 
> command along with the .i and .s file the compiler produces?
>
> This warning is usually related to something called FPXX. FPXX is an 
> extension to the O32 ABI that causes the compiler to generate objects 
> that can be used on both a 32-bit and 64-bit FPU. In recent compilers 
> it is enabled by default. The most likely cause of the warning is some 
> inline assembly that doesn't obey the small restrictions that FPXX 
> enforces. Assuming, this is the cause –mfp32/-mfp64 should provide a 
> work around but I'd recommend updating the inline assembly since this 
> will make it easier to port to newer Mips processors.
>
> //

Just tested with xercesc v3, got these warnings (sorry I said error 
message in last reply)
> DOMNodeIDMap.s:134: Warning: float register should be even, was 1
> DOMNodeIDMap.s:134: Warning: float register should be even, was 1
> DOMNodeIDMap.s:136: Warning: float register should be even, was 1
> DOMNodeIDMap.s:141: Warning: float register should be even, was 1
> DOMNodeIDMap.s:148: Warning: float register should be even, was 1
> DOMNodeIDMap.s:758: Warning: float register should be even, was 1
> DOMNodeIDMap.s:758: Warning: float register should be even, was 1
> DOMNodeIDMap.s:759: Warning: float register should be even, was 1
> DOMNodeIDMap.s:764: Warning: float register should be even, was 1
> DOMNodeIDMap.s:771: Warning: float register should be even, was 1
Hope this helps.

-- 
/Regards/
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