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| author | Roman Lebedev <lebedev.ri@gmail.com> | 2019-11-07 16:18:03 +0300 |
|---|---|---|
| committer | Roman Lebedev <lebedev.ri@gmail.com> | 2019-11-07 16:18:03 +0300 |
| commit | 69ce2ae990e7fffb4d0ed7a851ec072ad4e32c33 (patch) | |
| tree | e901e99c14752df235f711e22ead09981d5c51f8 /lldb/packages/Python/lldbsuite/test/commands/expression/context-object-objc/TestContextObjectObjc.py | |
| parent | 6fc73f63660b1fbe3a1af7b3f14d6fe441e0e938 (diff) | |
| download | bcm5719-llvm-69ce2ae990e7fffb4d0ed7a851ec072ad4e32c33.tar.gz bcm5719-llvm-69ce2ae990e7fffb4d0ed7a851ec072ad4e32c33.zip | |
[ConstantRange][LVI] Use overflow flags from `sub` to constrain the range
Summary:
This notably improves non-negativity deduction:
```
| statistic | old | new | delta | % change |
| correlated-value-propagation.NumAShrs | 209 | 227 | 18 | 8.6124% |
| correlated-value-propagation.NumAddNSW | 4972 | 4988 | 16 | 0.3218% |
| correlated-value-propagation.NumAddNUW | 7141 | 7148 | 7 | 0.0980% |
| correlated-value-propagation.NumAddNW | 12113 | 12136 | 23 | 0.1899% |
| correlated-value-propagation.NumAnd | 442 | 445 | 3 | 0.6787% |
| correlated-value-propagation.NumNSW | 7160 | 7176 | 16 | 0.2235% |
| correlated-value-propagation.NumNUW | 13306 | 13316 | 10 | 0.0752% |
| correlated-value-propagation.NumNW | 20466 | 20492 | 26 | 0.1270% |
| correlated-value-propagation.NumSDivs | 207 | 212 | 5 | 2.4155% |
| correlated-value-propagation.NumSExt | 6279 | 6679 | 400 | 6.3704% |
| correlated-value-propagation.NumSRems | 28 | 29 | 1 | 3.5714% |
| correlated-value-propagation.NumShlNUW | 2793 | 2796 | 3 | 0.1074% |
| correlated-value-propagation.NumShlNW | 3964 | 3967 | 3 | 0.0757% |
| correlated-value-propagation.NumUDivs | 353 | 358 | 5 | 1.4164% |
| instcount.NumAShrInst | 13763 | 13741 | -22 | -0.1598% |
| instcount.NumAddInst | 277349 | 277348 | -1 | -0.0004% |
| instcount.NumLShrInst | 27437 | 27463 | 26 | 0.0948% |
| instcount.NumOrInst | 102677 | 102678 | 1 | 0.0010% |
| instcount.NumSDivInst | 8732 | 8727 | -5 | -0.0573% |
| instcount.NumSExtInst | 80872 | 80468 | -404 | -0.4996% |
| instcount.NumSRemInst | 1679 | 1678 | -1 | -0.0596% |
| instcount.NumTruncInst | 62154 | 62153 | -1 | -0.0016% |
| instcount.NumUDivInst | 2526 | 2527 | 1 | 0.0396% |
| instcount.NumURemInst | 1589 | 1590 | 1 | 0.0629% |
| instcount.NumZExtInst | 69405 | 69809 | 404 | 0.5821% |
| instcount.TotalInsts | 7439575 | 7439574 | -1 | 0.0000% |
```
Reviewers: nikic, reames, spatel
Reviewed By: nikic
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69942
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/commands/expression/context-object-objc/TestContextObjectObjc.py')
0 files changed, 0 insertions, 0 deletions
