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| author | Roman Lebedev <lebedev.ri@gmail.com> | 2021-08-30 12:27:41 +0300 |
|---|---|---|
| committer | Roman Lebedev <lebedev.ri@gmail.com> | 2021-08-30 12:28:24 +0300 |
| commit | 795d142d237e0a06c136886a6dd9c49235c37295 (patch) | |
| tree | 5573117a52fc18909ba0eb83886b3988c3d3be19 /llvm/lib/Support/SmallVector.cpp | |
| parent | b1b68b4c0190b7fc7f0ebe823277966056b39494 (diff) | |
| download | llvm-795d142d237e0a06c136886a6dd9c49235c37295.zip llvm-795d142d237e0a06c136886a6dd9c49235c37295.tar.gz llvm-795d142d237e0a06c136886a6dd9c49235c37295.tar.bz2 | |
[NFCI][IndVars] rewriteLoopExitValues(): don't expand SCEV's until needed
Previously, we'd expand *ALL* the SCEV's eagerly, because we needed to
check with `isValidRewrite()`, and discard bad rewrite candidates,
but now that we do not do that, we also don't need to always expand.
In particular, this avoids expanding potentially-huge SCEV's that we
would discard anyways because they are high-cost and we aren't
rewriting aggressively.
Diffstat (limited to 'llvm/lib/Support/SmallVector.cpp')
0 files changed, 0 insertions, 0 deletions