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| author | Sanjoy Das <sanjoy@playingwithpointers.com> | 2017-10-13 05:50:52 +0000 |
|---|---|---|
| committer | Sanjoy Das <sanjoy@playingwithpointers.com> | 2017-10-13 05:50:52 +0000 |
| commit | e6b995f2b2bf639c63c34a33ab5325645ec8bd36 (patch) | |
| tree | 6a480c66b7d7ef14a3af1c243fa27403ea7bc975 /llvm/lib/Bitcode | |
| parent | 6794eb8ba15e9be367626774af20cc6c19dda8d7 (diff) | |
| download | bcm5719-llvm-e6b995f2b2bf639c63c34a33ab5325645ec8bd36.tar.gz bcm5719-llvm-e6b995f2b2bf639c63c34a33ab5325645ec8bd36.zip | |
[SCEV] Maintain loop use lists, and use them in forgetLoop
Summary:
Currently we do not correctly invalidate memoized results for add recurrences
that were created directly (i.e. they were not created from a `Value`). This
change fixes this by keeping loop use lists and using the loop use lists to
determine which SCEV expressions to invalidate.
Here are some statistics on the number of uses of in the use lists of all loops
on a clang bootstrap (config: release, no asserts):
Count: 731310
Min: 1
Mean: 8.555150
50th %time: 4
95th %tile: 25
99th %tile: 53
Max: 433
Reviewers: atrick, sunfish, mkazantsev
Subscribers: mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D38434
llvm-svn: 315672
Diffstat (limited to 'llvm/lib/Bitcode')
0 files changed, 0 insertions, 0 deletions
