On 10/28/2021 7:47 AM, Andrew MacLeod wrote:
On 10/28/21 9:38 AM, Jeff Law wrote:
On 10/25/2021 6:03 PM, Andrew MacLeod via Gcc-patches wrote:
This patch changes the ranger VRP pass to simplify all statements,
not just the ones with ranges. I believe Jeff had mentioned we were
no longer doing this a while back. Now we need it when running as
the VRP2 pass to satisfy the testcase: gcc.dg/wrapped-binop-simplify.c
I did :-) The lack of folding in [E]VRP caused a critical function
in perl to be ever-so-slightly larger and not be inlined leading to a
measurable performance regression in spec when compiled with gcc-11.
I never bothered upstreaming our internal version of this as other
(non-VRP) changes on the trunk addressed the problem.
Jeff
so does this resolve the situation then? It should, in theory.
I would expect so. It's quite similar to what we're doing internally
with our gcc-11 tree.
jeff
