[Bug rtl-optimization/48181] [4.8/4.9 Regression] wrong code with -O -fgcse --param ira-max-conflict-table-size=0

[steven at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48181

Steven Bosscher <steven at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.8/4.9/5 Regression]      |[4.8/4.9 Regression] wrong
                   |wrong code with -O -fgcse   |code with -O -fgcse --param
                   |--param                     |ira-max-conflict-table-size
                   |ira-max-conflict-table-size |=0
                   |=0                          |

--- Comment #10 from Steven Bosscher <steven at gcc dot gnu.org> ---
Not a GCC5 regression. Disabling LRA isn't possible.
Anyway, if disabling LRA would make this bug resurface then it's more likely a
reload (or reload<->IRA interaction) issue than something in IRA.