On 12/18/2009 07:40 AM, malc wrote:
After fixing a bug (crop was done after reading the cr) i run some
openssl speed benchmarks, and, at least here on an MPC7447A, got a
speed degradation, tiny but consistent.
Well, you could try rendering the setcond with branches instead of
logical operation
On Thu, 17 Dec 2009, Richard Henderson wrote:
> On 12/17/2009 07:32 AM, malc wrote:
> > > These new opcodes are considered "required" by the backend,
> > > because expanding them at the tcg level breaks the basic block.
> > > There might be some way to emulate within tcg internals, but
> > > that
On 12/17/2009 09:47 AM, malc wrote:
Urgh.. I really hate implementing those 2 ops.
See for example this lovely thread:
http://www.archivum.info/qemu-devel@nongnu.org/2008-06/00306/%5BQemu-devel%5D_%5B4705%5D_Fix_div%5Bu%5D2.
Heh, that one's pretty nasty.
But fwiw, you can just call into y
On 12/17/2009 09:07 AM, Richard Henderson wrote:
+ case TCG_COND_NE:
+ if (const_arg2) {
+ if ((uint16_t) arg2 == arg2) {
+ tcg_out32 (s, XORI | RS (arg1) | RA (0) | arg2);
+ }
+ else {
+ tcg_out_movi (s, TCG_TYPE_I32, 0, arg2);
+ tcg_out32 (s, XOR | SAB (arg1, 0, 0));
+ }
+ }
+ else {
+ tcg_out3
On Thu, 17 Dec 2009, Richard Henderson wrote:
> On 12/17/2009 07:32 AM, malc wrote:
> > > These new opcodes are considered "required" by the backend,
> > > because expanding them at the tcg level breaks the basic block.
> > > There might be some way to emulate within tcg internals, but
> > > that
On 12/17/2009 07:32 AM, malc wrote:
These new opcodes are considered "required" by the backend,
because expanding them at the tcg level breaks the basic block.
There might be some way to emulate within tcg internals, but
that doesn't seem worthwhile, as essentially all hosts have
some form of sup
On Thu, Dec 17, 2009 at 4:32 PM, malc wrote:
[...]
>
> Some:
> a. It breaks tcg on PPC[1]:
>
> ...qemu/tcg/tcg.c:1378: tcg fatal error
What a surprise :-)
I can provide a similar patch for ARM (I already have one
for my own implementation of setcond), but I'll wait for this
patch series to s
On Wed, 16 Dec 2009, Richard Henderson wrote:
> This patch series adds support for setcond (aka setcc) and
> movcond (aka cmov) opcodes to TCG.
>
> These new opcodes are considered "required" by the backend,
> because expanding them at the tcg level breaks the basic block.
> There might be some w
This patch series adds support for setcond (aka setcc) and
movcond (aka cmov) opcodes to TCG.
These new opcodes are considered "required" by the backend,
because expanding them at the tcg level breaks the basic block.
There might be some way to emulate within tcg internals, but
that doesn't seem w
