summaryrefslogtreecommitdiffstats
path: root/llvm/test/Transforms/CorrelatedValuePropagation/icmp.ll
Commit message (Collapse)AuthorAgeFilesLines
* [ConstantRange][LVI] Use overflow flags from `sub` to constrain the rangeRoman Lebedev2019-11-071-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* [NFC][CVP] Add some tests for `sub` with preexisting no-wrap flagsRoman Lebedev2019-11-071-0/+216
| | | | We can use those to further limit the ranges in LVI.
* [JT][CVP] Regenerate test checks, againNikita Popov2019-11-011-12/+12
| | | | | The changes to update_test_checks format have been disabled again, so regenerate these tests. Also regenerate select.ll.
* [CVP] Add tests for icmp on local ranges; NFCNikita Popov2019-10-311-10/+43
| | | | | We currently don't simplify these, because getPredicateAt() does not use block values.
* [LVI][CVP] LazyValueInfoImpl::solveBlockValueBinaryOp(): use no-wrap flags ↵Roman Lebedev2019-10-231-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | from `add` op Summary: This was suggested in https://reviews.llvm.org/D69277#1717210 In this form (this is what was suggested, right?), the results aren't staggering (especially since given LVI cross-block focus) this does catch some things (as per test-suite), but not too much: | statistic | old | new | delta | % change | | correlated-value-propagation.NumAddNSW | 4981 | 4982 | 1 | 0.0201% | | correlated-value-propagation.NumAddNW | 12125 | 12126 | 1 | 0.0082% | | correlated-value-propagation.NumCmps | 1199 | 1202 | 3 | 0.2502% | | correlated-value-propagation.NumDeadCases | 112 | 111 | -1 | -0.8929% | | correlated-value-propagation.NumMulNSW | 275 | 278 | 3 | 1.0909% | | correlated-value-propagation.NumMulNUW | 1323 | 1326 | 3 | 0.2268% | | correlated-value-propagation.NumMulNW | 1598 | 1604 | 6 | 0.3755% | | correlated-value-propagation.NumNSW | 7158 | 7167 | 9 | 0.1257% | | correlated-value-propagation.NumNUW | 13304 | 13310 | 6 | 0.0451% | | correlated-value-propagation.NumNW | 20462 | 20477 | 15 | 0.0733% | | correlated-value-propagation.NumOverflows | 4 | 7 | 3 | 75.0000% | | correlated-value-propagation.NumPhis | 15366 | 15381 | 15 | 0.0976% | | correlated-value-propagation.NumSExt | 6273 | 6277 | 4 | 0.0638% | | correlated-value-propagation.NumShlNSW | 1172 | 1171 | -1 | -0.0853% | | correlated-value-propagation.NumShlNUW | 2793 | 2794 | 1 | 0.0358% | | correlated-value-propagation.NumSubNSW | 730 | 736 | 6 | 0.8219% | | correlated-value-propagation.NumSubNUW | 2044 | 2046 | 2 | 0.0978% | | correlated-value-propagation.NumSubNW | 2774 | 2782 | 8 | 0.2884% | | instcount.NumAddInst | 277586 | 277569 | -17 | -0.0061% | | instcount.NumAndInst | 66056 | 66054 | -2 | -0.0030% | | instcount.NumBrInst | 709147 | 709146 | -1 | -0.0001% | | instcount.NumCallInst | 528579 | 528576 | -3 | -0.0006% | | instcount.NumExtractValueInst | 18307 | 18301 | -6 | -0.0328% | | instcount.NumOrInst | 102660 | 102665 | 5 | 0.0049% | | instcount.NumPHIInst | 318008 | 318007 | -1 | -0.0003% | | instcount.NumSelectInst | 46373 | 46370 | -3 | -0.0065% | | instcount.NumSExtInst | 79496 | 79488 | -8 | -0.0101% | | instcount.NumShlInst | 40654 | 40657 | 3 | 0.0074% | | instcount.NumTruncInst | 62251 | 62249 | -2 | -0.0032% | | instcount.NumZExtInst | 68211 | 68221 | 10 | 0.0147% | | instcount.TotalBlocks | 843910 | 843909 | -1 | -0.0001% | | instcount.TotalInsts | 7387448 | 7387423 | -25 | -0.0003% | Reviewers: nikic, reames Reviewed By: nikic Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69321
* [NFC][LVI][CVP] Tests where pre-specified `add` no-wrap flags could be used ↵Roman Lebedev2019-10-221-0/+136
| | | | | | | by LVI There's `ConstantRange::addWithNoWrap()`, LVI could use it to further constrain the range, if an `add` already has some no-wrap flags specified.
* [CVP] No-wrap deduction for `shl`Roman Lebedev2019-10-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This is the last `OverflowingBinaryOperator` for which we don't deduce flags. D69217 taught `ConstantRange::makeGuaranteedNoWrapRegion()` about it. The effect is better than of the `mul` patch (D69203): | statistic | old | new | delta | % change | | correlated-value-propagation.NumAddNUW | 7145 | 7144 | -1 | -0.0140% | | correlated-value-propagation.NumAddNW | 12126 | 12125 | -1 | -0.0082% | | correlated-value-propagation.NumAnd | 443 | 446 | 3 | 0.6772% | | correlated-value-propagation.NumNSW | 5986 | 7158 | 1172 | 19.5790% | | correlated-value-propagation.NumNUW | 10512 | 13304 | 2792 | 26.5601% | | correlated-value-propagation.NumNW | 16498 | 20462 | 3964 | 24.0272% | | correlated-value-propagation.NumShlNSW | 0 | 1172 | 1172 | | | correlated-value-propagation.NumShlNUW | 0 | 2793 | 2793 | | | correlated-value-propagation.NumShlNW | 0 | 3965 | 3965 | | | instcount.NumAShrInst | 13824 | 13790 | -34 | -0.2459% | | instcount.NumAddInst | 277584 | 277586 | 2 | 0.0007% | | instcount.NumAndInst | 66061 | 66056 | -5 | -0.0076% | | instcount.NumBrInst | 709153 | 709147 | -6 | -0.0008% | | instcount.NumICmpInst | 483709 | 483708 | -1 | -0.0002% | | instcount.NumSExtInst | 79497 | 79496 | -1 | -0.0013% | | instcount.NumShlInst | 40691 | 40654 | -37 | -0.0909% | | instcount.NumSubInst | 61997 | 61996 | -1 | -0.0016% | | instcount.NumZExtInst | 68208 | 68211 | 3 | 0.0044% | | instcount.TotalBlocks | 843916 | 843910 | -6 | -0.0007% | | instcount.TotalInsts | 7387528 | 7387448 | -80 | -0.0011% | Reviewers: nikic, reames, sanjoy, timshen Reviewed By: nikic Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69277 llvm-svn: 375455
* [CVP] Reenable nowrap flag inferenceNikita Popov2019-06-241-2/+2
| | | | | | | | | | | Inference of nowrap flags in CVP has been disabled, because it triggered a bug in LFTR (https://bugs.llvm.org/show_bug.cgi?id=31181). This issue has been fixed in D60935, so we should be able to reenable nowrap flag inference now. Differential Revision: https://reviews.llvm.org/D62776 llvm-svn: 364228
* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+245
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-245/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [CVP] auto-generate complete test checks; NFCSanjay Patel2018-11-291-18/+99
| | | | llvm-svn: 347866
* [LVI] run transfer function for binary operator even when the RHS isn't a ↵John Regehr2018-11-211-0/+100
| | | | | | | | | | | | | constant LVI was symbolically executing binary operators only when the RHS was constant, missing the case where we have a ConstantRange for the RHS, but not an actual constant. Tested using check-all and by bootstrapping. Compile time is not impacted measurably. Differential Revision: https://reviews.llvm.org/D19859 llvm-svn: 347379
* [PM] Port CorrelatedValuePropagationSean Silva2016-07-061-0/+1
| | | | llvm-svn: 274705
* LazyValueInfo: Actually re-visit partially solved block-values in ↵Hans Wennborg2014-11-251-0/+63
solveBlockValue() If solveBlockValue() needs results from predecessors that are not already computed, it returns false with the intention of resuming when the dependencies have been resolved. However, the computation would never be resumed since an 'overdefined' result had been placed in the cache, preventing any further computation. The point of placing the 'overdefined' result in the cache seems to have been to break cycles, but we can check for that when inserting work items in the BlockValue stack instead. This makes the "stop and resume" mechanism of solveBlockValue() work as intended, unlocking more analysis. Using this patch shaves 120 KB off a 64-bit Chromium build on Linux. I benchmarked compiling bzip2.c at -O2 but couldn't measure any difference in compile time. Tests by Jiangning Liu from r215343 / PR21238, Pete Cooper, and me. Differential Revision: http://reviews.llvm.org/D6397 llvm-svn: 222768
OpenPOWER on IntegriCloud