Re: [PATCH] Teach VRP about ABSU_EXPR (PR tree-optimization/89143)

2019-01-31 Thread Richard Biener
On February 1, 2019 12:00:26 AM GMT+01:00, Jakub Jelinek wrote: >Hi! > >As mentioned in the PR, with the introduction of ABSU_EXPR where we >were >previously using ABS_EXPR we've regressed various cases where VRP used >to be >able to determine ranges for ABS_EXPR, but as ABSU_EXPR is unknown, we

[PATCH] Teach VRP about ABSU_EXPR (PR tree-optimization/89143)

2019-01-31 Thread Jakub Jelinek
Hi! As mentioned in the PR, with the introduction of ABSU_EXPR where we were previously using ABS_EXPR we've regressed various cases where VRP used to be able to determine ranges for ABS_EXPR, but as ABSU_EXPR is unknown, we always defer to VARYING. ABSU_EXPR is actually much easier to handle tha