[clang] [clang] Better bitfield access units (PR #65742)
Nathan Sidwell via cfe-commits
cfe-commits at lists.llvm.org
Mon Sep 11 04:10:15 PDT 2023
urnathan wrote:
> Also, please have a look at the existing `-ffine-grained-bitfield-accesses` flag and the discussions around it and IPO.
That flag's behaviour is unchanged here -- it continues to not merge access units. My contention here is that (a) merging units can be advantageous, but (b) the existing algorithm has some deficiencies.
https://github.com/llvm/llvm-project/pull/65742
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