Krzysztof Parzyszek via llvm-dev
2016-Jul-28 21:21 UTC
[llvm-dev] Liveness of virtual registers
On 7/28/2016 4:10 PM, Matthias Braun wrote:> > I re-checked the RegisterPressure.cpp code as well and it does not rely on dead-flags either (if there is no dead flag it queries the liveinterval for it). So it seems you are right with the statement of dead flags being optional.Cool. Thanks for double-checking. -Krzysztof -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
Quentin Colombet via llvm-dev
2016-Aug-11 19:36 UTC
[llvm-dev] Liveness of virtual registers
My recollection is unlike kill flags, the dead flags are required for something that is dead. Given it is not enforced in the verifier, this is possible we drifted from that goal or simply I misremember :).> On Jul 28, 2016, at 2:21 PM, Krzysztof Parzyszek via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > On 7/28/2016 4:10 PM, Matthias Braun wrote: >> >> I re-checked the RegisterPressure.cpp code as well and it does not rely on dead-flags either (if there is no dead flag it queries the liveinterval for it). So it seems you are right with the statement of dead flags being optional. > > Cool. Thanks for double-checking. > > -Krzysztof > > > -- > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev