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author | Roman Lebedev <lebedev.ri@gmail.com> | 2019-10-21 08:21:44 +0000 |
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committer | Roman Lebedev <lebedev.ri@gmail.com> | 2019-10-21 08:21:44 +0000 |
commit | 292771627735a0d23ba3e82b04f9571def812917 (patch) | |
tree | 53cc6ea4e0589acc3b83cb42547c9f5fd595b357 /lldb/packages/Python/lldbsuite/test/python_api/frame/TestFrames.py | |
parent | a861c9aef926f963ea31581bebbd197356323928 (diff) | |
download | bcm5719-llvm-292771627735a0d23ba3e82b04f9571def812917.tar.gz bcm5719-llvm-292771627735a0d23ba3e82b04f9571def812917.zip |
[CVP] Deduce no-wrap on `mul`
Summary:
`ConstantRange::makeGuaranteedNoWrapRegion()` knows how to deal with `mul`
since rL335646, there is exhaustive test coverage.
This is already used by CVP's `processOverflowIntrinsic()`,
and by SCEV's `StrengthenNoWrapFlags()`
That being said, currently, this doesn't help much in the end:
| statistic | old | new | delta | percentage |
| correlated-value-propagation.NumMulNSW | 4 | 275 | 271 | 6775.00% |
| correlated-value-propagation.NumMulNUW | 4 | 1323 | 1319 | 32975.00% |
| correlated-value-propagation.NumMulNW | 8 | 1598 | 1590 | 19875.00% |
| correlated-value-propagation.NumNSW | 5715 | 5986 | 271 | 4.74% |
| correlated-value-propagation.NumNUW | 9193 | 10512 | 1319 | 14.35% |
| correlated-value-propagation.NumNW | 14908 | 16498 | 1590 | 10.67% |
| instcount.NumAddInst | 275871 | 275869 | -2 | 0.00% |
| instcount.NumBrInst | 708234 | 708232 | -2 | 0.00% |
| instcount.NumMulInst | 43812 | 43810 | -2 | 0.00% |
| instcount.NumPHIInst | 316786 | 316784 | -2 | 0.00% |
| instcount.NumTruncInst | 62165 | 62167 | 2 | 0.00% |
| instcount.NumUDivInst | 2528 | 2526 | -2 | -0.08% |
| instcount.TotalBlocks | 842995 | 842993 | -2 | 0.00% |
| instcount.TotalInsts | 7376486 | 7376478 | -8 | 0.00% |
(^ test-suite plain, tests still pass)
Reviewers: nikic, reames, luqmana, sanjoy, timshen
Reviewed By: reames
Subscribers: hiraditya, javed.absar, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69203
llvm-svn: 375396
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/python_api/frame/TestFrames.py')
0 files changed, 0 insertions, 0 deletions