On Thu, Dec 13, 2018 at 04:40:06PM +, Edward Cree wrote:
> On 13/12/18 10:52, Jiong Wang wrote:
> > Because there is inter-procedure register allocation support in LLVM
> > (-enable-ipra), which could effectively eliminate register save/restore for
> > one caller-saved register across function
On 13/12/18 10:52, Jiong Wang wrote:
> Because there is inter-procedure register allocation support in LLVM
> (-enable-ipra), which could effectively eliminate register save/restore for
> one caller-saved register across function call if the compiler can prove
> callee or any other childs on the ca
Jakub Kicinski writes:
>> Is that just an optimisation that we can do because we know caller's
>> r1-r5 were scratched by the call?
(resent, got a bounce back from netdev mailing list for previous email)
I had been pondering whether it is really necessary to mark caller saved
registers as sc
On Wed, 12 Dec 2018 20:28:07 +, Edward Cree wrote:
> On 10/12/18 19:35, Jakub Kicinski wrote:
> > Currently for liveness and state pruning the register parentage
> > chains don't include states of the callee. This makes some sense
> > as the callee can't access those registers. However, this
On 10/12/18 19:35, Jakub Kicinski wrote:
> Currently for liveness and state pruning the register parentage
> chains don't include states of the callee. This makes some sense
> as the callee can't access those registers. However, this means
> that READs done after the callee returns will not propa
On Mon, Dec 10, 2018 at 11:35:12AM -0800, Jakub Kicinski wrote:
> Currently for liveness and state pruning the register parentage
> chains don't include states of the callee. This makes some sense
> as the callee can't access those registers. However, this means
> that READs done after the callee
On Mon, 10 Dec 2018 11:35:12 -0800, Jakub Kicinski wrote:
> Currently for liveness and state pruning the register parentage
> chains don't include states of the callee. This makes some sense
> as the callee can't access those registers. However, this means
> that READs done after the callee retur
Currently for liveness and state pruning the register parentage
chains don't include states of the callee. This makes some sense
as the callee can't access those registers. However, this means
that READs done after the callee returns will not propagate into
the states of the callee. Callee will
