llvm dev - Jun 2011 - [LLVMdev] [PATCH]: PowerPC64 register/instruction fixes

Hi there!

The attached patch fixes a few places where 32bit register classes
or instructions are used on PowerPC64.

This lets me compile a working "vim" at -O0 on PowerPC64/FreeBSD.
Previously
it would crash the compiler with 

        llvm_unreachable("Impossible reg-to-reg copy");


As it was mixing 64 bit registers with 32bit ones. Vim compiled with -O2
still crashes.


OK to commit?

roman

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On Jun 16, 2011, at 8:27 AM, Roman Divacky wrote:
> Hi there!
> 
> The attached patch fixes a few places where 32bit register classes
> or instructions are used on PowerPC64.
> 
> This lets me compile a working "vim" at -O0 on PowerPC64/FreeBSD.
Previously
> it would crash the compiler with 
> 
>        llvm_unreachable("Impossible reg-to-reg copy");
> 
> 
> As it was mixing 64 bit registers with 32bit ones. Vim compiled with -O2
> still crashes.
> 
> 
> OK to commit?
Looks good, but please include testcases.

/jakob