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| author | Nikita Popov <nikita.ppv@gmail.com> | 2020-10-25 17:13:38 +0100 |
|---|---|---|
| committer | Nikita Popov <nikita.ppv@gmail.com> | 2020-10-25 18:00:22 +0100 |
| commit | 0dda6333175c1749f12be660456ecedade3bcf21 (patch) | |
| tree | 039b57ab9473906505098c64448e4811613c9b65 /clang/lib/CodeGen/CodeGenFunction.cpp | |
| parent | c5718253c9383bc02b384109743de30792c2b122 (diff) | |
| download | llvm-0dda6333175c1749f12be660456ecedade3bcf21.zip llvm-0dda6333175c1749f12be660456ecedade3bcf21.tar.gz llvm-0dda6333175c1749f12be660456ecedade3bcf21.tar.bz2 | |
[SCEV] Strength nowrap flags after constant folding
We should first try to constant fold the add expression and only
strengthen nowrap flags afterwards. This allows us to determine
stronger flags if e.g. only two operands are left after constant
folding (and thus "guaranteed no wrap region" code applies) or the
resulting operands are non-negative and thus nsw->nuw strengthening
applies.
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
0 files changed, 0 insertions, 0 deletions