[dmd-internals] [D-Programming-Language/dmd] a6fbb4: first stab at using XMM regs

[Walter Bright]

On 10/28/2011 2:17 PM, David Simcha wrote:
> Does this mean that DMD will generate SSE code in 64-bit mode?
>

That's the plan. I've been wanting to get this done for a long time. 64 bit will 
be the test bed.

(64 bit code gen already has the necessary 64 bit stack alignment for this to 
work, also 100% of the 64 bit CPUs have XMM registers. This is not so for 32 bit 
CPUs other than OS X targets. I figure 32 bit OS X would be the next target.)

Because of its potential disruptiveness, I want to do this at the beginning of a 
release cycle.