[cfe-dev] powerpc & double-double size

[James Gregurich]

After digging through llvm source code all day and finding

    if (getTriple().getOS() == llvm::Triple::FreeBSD ||
        getTriple().getVendor() == llvm::Triple::ELLCC) {
      LongDoubleWidth = LongDoubleAlign = 64;
      LongDoubleFormat = &llvm::APFloat::IEEEdouble;
    }


I believe the answer to my question is to build my own llvm 3.4 rather than using Apple’s clang which is based on llvm 3.3 and probably doesn’t have this code in it.





On Nov 15, 2013, at 1:28 PM, James Gregurich <bayoubengal at mac.com> wrote:

> I’m going through the documentation to look for how to do this, but I’m having a harding time finding the useful info. How do you configure the clang/llvm build to use a ‘double double’ size of 8 bytes (as opposed to the excepted 16) on powerPC?
> 
> gcc has a configure parameter of '--with-long-double-64’ to do this, but I don’t see that flag in the llvm configure script.
> 
> -James
> 
>  
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