Re: [024/nnn] poly_int: ira subreg liveness tracking

2017-12-05 Thread Richard Sandiford
Jeff Law writes: > On 10/23/2017 11:09 AM, Richard Sandiford wrote: >> Normmaly the IRA-reload interface tries to track the liveness of >> individual bytes of an allocno if the allocno is sometimes written >> to as a SUBREG. This isn't possible for variable-sized allocnos, >>

Re: [024/nnn] poly_int: ira subreg liveness tracking

2017-11-28 Thread Jeff Law
On 10/23/2017 11:09 AM, Richard Sandiford wrote: > Normmaly the IRA-reload interface tries to track the liveness of > individual bytes of an allocno if the allocno is sometimes written > to as a SUBREG. This isn't possible for variable-sized allocnos, > but it doesn't matter because targets with

[024/nnn] poly_int: ira subreg liveness tracking

2017-10-23 Thread Richard Sandiford
Normmaly the IRA-reload interface tries to track the liveness of individual bytes of an allocno if the allocno is sometimes written to as a SUBREG. This isn't possible for variable-sized allocnos, but it doesn't matter because targets with variable-sized registers should use LRA instead. This