[llvm-commits] [llvm-gcc-4.0] r43134 - in /llvm-gcc-4.0/trunk/gcc/config/rs6000: darwin-ldouble.c darwin-libgcc.10.4.ver darwin-libgcc.10.5.ver darwin.h

[Chris Lattner]

On Oct 18, 2007, at 2:09 PM, Dale Johannesen wrote:

>
> On Oct 18, 2007, at 1:04 PM, Chris Lattner wrote:
>>>    /* Use fused multiply-add to get low part of a * c.  */
>>> -/* APPLE LOCAL begin LLVM */
>>> -#ifndef __llvm__  /* FIXME: no long double support! */
>>>    asm ("fmsub %0,%1,%2,%3" : "=f"(tau) : "f"(a), "f"(c), "f"(t));
>>> -#endif
>>
>> Have you tested to see if long double works with inline asm?
>
> No; there are no long double instructions, so I'm not sure how you
> would write such a thing in inline asm.
> (The asm in the fix above breaks the long double into two doubles
> explicitly, and I'd expect that to be the common practice).

Yep, tha'ts what I mean: when the above gets broken into the two  
component registers, do they come through correctly in the .s file?

-Chris