recent troubles with float vectors & bitwise ops

[Paolo Bonzini]

> Apparently enough for a small vendor like Intel to propose such things 
> as orps, andps, andnps, and xorps.

I think you're running too far with your sarcasm. SSE's instructions do 
not go so far as to specify integer vs. floating point.  To me, "ps" 
means "32-bit SIMD", independent of integerness.

> So, that's what i feared... it was intentional. And now i guess the only 
> sanctioned access to those ops is via builtins/intrinsics.

No, you can do so with casts.  Floating-point to integer vector casts 
preserve the bit pattern.  For example, you can do

vector float f = { 5, 5, 5, 5 };
vector int g = { 0x80000000, 0, 0x80000000, 0 };
vector int f_int = (vector int) f;
f = (vector float) (f_int ^ g);

For Altivec, I get exactly

         addis r2,r10,ha16(LC0-"gibberish")
         la r2,lo16(LC0-"gibberish")(r2)
         lvx v0,0,r2
         vxor v2,v2,v0
	...
     LC0:
         .long   -2147483648
         .long   0
         .long   -2147483648
         .long   0

Paolo