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llvm-project/llvm/test/Transforms/CorrelatedValuePropagation
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Roman Lebedev 69ce2ae990
[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
 		2019-11-07 16:18:03 +03:00
..
2010-09-02-Trunc.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2010-09-26-MergeConstantRange.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
add.ll [CorrelatedValuePropagation] Mark subs that we know not to wrap with nuw/nsw. 2019-04-20 13:14:18 +00:00
alloca.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
and.ll [CVP] Remove a masking operation if range information implies it's a noop 2019-10-11 03:48:56 +00:00
ashr.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
basic.ll [CVP] Reenable nowrap flag inference 2019-06-24 20:13:13 +00:00
conflict.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
crash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
deopt.ll [CVP] Reenable nowrap flag inference 2019-06-24 20:13:13 +00:00
guards.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
icmp.ll [ConstantRange][LVI] Use overflow flags from `sub` to constrain the range 2019-11-07 16:18:03 +03:00
mul.ll [CVP] Deduce no-wrap on `mul` 2019-10-21 08:21:44 +00:00
non-null.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
overflow_predicate.ll [LVI][CVP] Calculate with.overflow result range 2019-05-25 09:53:45 +00:00
overflows.ll [CVP] After proving that @llvm.with.overflow()/@llvm.sat() don't overflow, also try to prove other no-wrap 2019-10-18 19:32:47 +00:00
phi-common-val.ll [CVP] prevent propagating poison when substituting edge values into a phi (PR43802) 2019-10-28 08:58:28 -04:00
pointer.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
pr35807.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
profmd.ll Resubmit "[CorrelatedValuePropagation] Fix prof branch_weights metadata handling for SwitchInst" 2019-06-05 05:46:40 +00:00
range.ll [CVP] Remove a masking operation if range information implies it's a noop 2019-10-11 03:48:56 +00:00
sdiv.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
select.ll [JT][CVP] Regenerate test checks, again 2019-11-01 22:27:48 +01:00
sext.ll [CVP} Replace SExt with ZExt if the input is known-non-negative 2019-10-08 20:29:48 +00:00
shl.ll [CVP] No-wrap deduction for `shl` 2019-10-21 21:31:19 +00:00
srem.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
sub.ll [CorrelatedValuePropagation] Mark subs that we know not to wrap with nuw/nsw. 2019-04-20 13:14:18 +00:00
udiv.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
urem.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00