search for: d62341

...posted these two patches: > > [X86][CodeGen][NFC] Delay `combineIncDecVector()` from DAGCombine to > X86DAGToDAGISel > https://reviews.llvm.org/D62327 > > [DAGCombine][X86][AArch64][AMDGPU][MIPS][PPC] (sub x, c) -> (add x, > -c) vector edition. > https://reviews.llvm.org/D62341 > > While they got stuck since i wasn't really interested in them > (i'm mostly interested in scalars, not vectors...), > i don't think there was any fatal roadblocks there, > so i guess i should rebase them and see what's the status now. > > Roman. > > On...

I think DAGToDAG is too late because the build_vector has already been turned into a constant pool load by then so it’s a little difficult to get back. Maybe we can delay it to !DCI.isBeforeLegalizeOps()? That would at least let the first DAG combine and the post type legalization DAG combine see the add, 1. +Sanjay as well From: Amaury Séchet <deadalnix at gmail.com> Sent: Monday, August

Hi all, As you knwo already, I'm trying to change DAGCombiner so that it process the nodes in topological order. Doing so is not difficult per se, but this creates various improvements and regression to the existing test suite. I'd like to work through as many of the regressions as possible ahead of time. One source of such regressions is combineIncDecVector in the X86 backend. It