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| author | Florian Hahn <flo@fhahn.com> | 2023-03-07 17:10:34 +0100 |
|---|---|---|
| committer | Florian Hahn <flo@fhahn.com> | 2023-03-07 17:10:34 +0100 |
| commit | 7019624ee124c0560567923ecd808c2d36c40f14 (patch) | |
| tree | 2e44b34da8d9e91341331468884f8f3657a6160a /flang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 38b9fb5a129db3e086610d53b534833273c5b4d0 (diff) | |
| download | llvm-7019624ee124c0560567923ecd808c2d36c40f14.zip llvm-7019624ee124c0560567923ecd808c2d36c40f14.tar.gz llvm-7019624ee124c0560567923ecd808c2d36c40f14.tar.bz2 | |
[SCEV] Strengthen nowrap flags via ranges for ARs on construction.
At the moment, proveNoWrapViaConstantRanges is only used when creating
SCEV[Zero,Sign]ExtendExprs. We can get significant improvements by
strengthening flags after creating the AddRec.
I'll also share a follow-up patch that removes the code to strengthen
flags when creating SCEV[Zero,Sign]ExtendExprs. Modifying AddRecs while
creating those can lead to surprising changes.
Compile-time looks neutral:
https://llvm-compile-time-tracker.com/compare.php?from=94676cf8a13c511a9acfc24ed53c98964a87bde3&to=aced434e8b103109104882776824c4136c90030d&stat=instructions:u
Reviewed By: mkazantsev, nikic
Differential Revision: https://reviews.llvm.org/D144050
Diffstat (limited to 'flang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions