[Gc] Uses of SSE registers?
qinsoon at gmail.com
Wed Oct 16 23:35:27 PDT 2013
I tried in my program to use one SSE register to store a C global
variable (gcc has support for this). But the value from that register
variable was not as intended sometimes. I am trying to figure out the
reason, and one of my guesses is that the GC uses those registers. I
will try use -mno-sse for building the GC and see what happens then.
Thanks very much.
On 17/10/2013 4:12 PM, Bruce Hoult wrote:
> I could be wrong, but I don't *think* there is anything explicitly
> about SSE in the GC, except for adjusting the exception mask when
> pushing callee-save registers.
> It could well be that your build flags are such that your compiler
> uses SSE instructions for some things written in C.
> I'm also not entirely sure why you believe that you'd want or need to
> prevent the GC from using SSE?
> On Thu, Oct 17, 2013 at 5:02 PM, Yi Lin <qinsoon at gmail.com
> <mailto:qinsoon at gmail.com>> wrote:
> Hi all,
> It seems the GC uses SSE registers. If I want to use those
> registers in my program, is there a way to turn it off for the GC?
> Thanks very much.
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