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Sanjoy Das 32fd32bc6f [SCEV] Check the cache in get{S|U}MaxExpr before doing any work 
Summary:
This lets us avoid e.g. checking if A >=s B in getSMaxExpr(A, B) if we've
already established that (A smax B) is the best we can do.

Fixes PR41225.

Reviewers: asbirlea

Subscribers: mcrosier, jlebar, bixia, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60010

llvm-svn: 357320
2019-03-29 22:00:12 +00:00
..
2007-07-15-NegativeStride.ll
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2007-08-06-MisinterpretBranch.ll
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2007-08-06-Unsigned.ll
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2007-09-27-LargeStepping.ll
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2007-11-14-SignedAddRec.ll
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2007-11-18-OrInstruction.ll
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2008-02-11-ReversedCondition.ll
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2008-02-12-SMAXTripCount.ll
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2008-02-15-UMax.ll
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2008-05-25-NegativeStepToZero.ll
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2008-06-12-BinomialInt64.ll
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2008-07-12-UnneededSelect1.ll
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2008-07-12-UnneededSelect2.ll
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2008-07-19-InfiniteLoop.ll
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2008-07-19-WrappingIV.ll
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2008-07-29-SGTTripCount.ll
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2008-07-29-SMinExpr.ll
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2008-08-04-IVOverflow.ll
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2008-08-04-LongAddRec.ll
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2008-11-02-QuadraticCrash.ll
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2008-11-15-CubicOOM.ll
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2008-11-18-LessThanOrEqual.ll
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2008-11-18-Stride1.ll
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2008-11-18-Stride2.ll
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2008-12-08-FiniteSGE.ll
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2008-12-11-SMaxOverflow.ll
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2008-12-14-StrideAndSigned.ll
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2008-12-15-DontUseSDiv.ll
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2009-01-02-SignedNegativeStride.ll
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2009-04-22-TruncCast.ll
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2009-05-09-PointerEdgeCount.ll
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2009-07-04-GroupConstantsWidthMismatch.ll
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2010-09-03-RequiredTransitive.ll
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2011-03-09-ExactNoMaxBECount.ll
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2011-04-26-FoldAddRec.ll
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2011-10-04-ConstEvolve.ll
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2012-03-26-LoadConstant.ll
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2012-05-18-LoopPredRecurse.ll
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2012-05-29-MulAddRec.ll
[SimplifyIndVars] Ignore dead users
2018-06-13 02:25:32 +00:00
and-xor.ll
[SCEV] Simplify zext/trunc idiom that appears when handling bitmasks.
2018-06-14 17:13:48 +00:00
avoid-assume-hang.ll
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avoid-infinite-recursion-0.ll
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avoid-infinite-recursion-1.ll
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avoid-smax-0.ll
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avoid-smax-1.ll
…
binomial-explision.ll
[SCEV] Avoid redundant computations when doing AddRec merge
2018-11-01 06:18:27 +00:00
cache_loop_exit_limit.ll
…
constant_condition.ll
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different-loops-recs.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
div-overflow.ll
…
do-loop.ll
…
exact_iter_count.ll
Re-enable "[SCEV] Make computeExitLimit more simple and more powerful"
2018-05-03 02:37:55 +00:00
exact-exit-count-more-precise.ll
[SCEV] Handle case where MaxBECount is less precise than ExactBECount for OR.
2019-03-02 02:31:44 +00:00
exhaustive-trip-counts.ll
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expander-replace-congruent-ivs.ll
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exponential-behavior.ll
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ext-antecedent.ll
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extract-highbits-sameconstmask.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
extract-highbits-variablemask.ll
[NFC][SCEV] Add tests related to bit masking (PR37793)
2018-06-20 07:54:11 +00:00
extract-lowbits-sameconstmask.ll
[NFC][SCEV] Add tests related to bit masking (PR37793)
2018-06-20 07:54:11 +00:00
extract-lowbits-variablemask.ll
[NFC][SCEV] Add tests related to bit masking (PR37793)
2018-06-20 07:54:11 +00:00
flags-from-poison-dbg.ll
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.
2018-05-09 02:40:45 +00:00
flags-from-poison.ll
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flattened-0.ll
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fold.ll
Fix incorrect CHECK-LABEL
2018-06-11 19:56:12 +00:00
guards.ll
[SimplifyIndVars] Ignore dead users
2018-06-13 02:25:32 +00:00
how-far-to-zero.ll
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huge_expression_limit.ll
[SCEV] Prohibit SCEV transformations for huge SCEVs
2019-01-31 06:19:25 +00:00
implied-via-addition.ll
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implied-via-division.ll
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incorrect-nsw.ll
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increasing-or-decreasing-iv.ll
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infer-prestart-no-wrap.ll
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infer-via-ranges.ll
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inner-loop-by-latch-cond-unknown.ll
[SCEV] Re-land: Fix isKnownPredicate
2018-03-19 06:35:30 +00:00
invalidation.ll
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latch-dominating-conditions.ll
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limit-depth.ll
[SCEV] Use depth limit for trunc analysis
2019-03-12 18:28:05 +00:00
load-with-range-metadata.ll
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load.ll
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lshr-shl-differentconstmask.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
max-addops-inline.ll
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max-addrec-size.ll
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max-be-count-not-constant.ll
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max-expr-cache.ll
[SCEV] Check the cache in get{S|U}MaxExpr before doing any work
2019-03-29 22:00:12 +00:00
max-mulops-inline.ll
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max-trip-count-address-space.ll
[SCEV] Simplify trunc-of-add/mul to add/mul-of-trunc under more circumstances.
2018-06-14 17:13:35 +00:00
max-trip-count.ll
[SCEV] Make exact taken count calculation more optimistic
2018-03-27 07:30:38 +00:00
merge-add-rec-many-inputs.ll
Fix overconfident assert in ScalarEvolution::isImpliedViaMerge
2018-06-29 11:46:30 +00:00
min-max-exprs.ll
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no-wrap-add-exprs.ll
[SCEV] Add zext(C + x + ...) -> D + zext(C-D + x + ...)<nuw><nsw> transform
2018-07-24 21:48:56 +00:00
no-wrap-unknown-becount.ll
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non-IV-phi.ll
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nowrap-preinc-limits.ll
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nsw-offset-assume.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
nsw-offset.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
nsw.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
nw-sub-is-not-nw-add.ll
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overflow-intrinsics.ll
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pointer-sign-bits.ll
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pr3909.ll
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pr18606-min-zeros.ll
Fixed typos in tests: s/CEHCK/CHECK/
2019-02-25 13:12:33 +00:00
pr18606.ll
Fixed typos in tests: s/CEHCK/CHECK/
2019-02-25 13:12:33 +00:00
pr22179.ll
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pr22641.ll
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pr22674.ll
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pr22856.ll
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pr24757.ll
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pr25369.ll
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pr27315.ll
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pr28705.ll
Return "[IndVars] Smart hard uses detection"
2018-11-08 11:54:35 +00:00
pr34538.ll
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pr35890.ll
[SCEV] Make getPostIncExpr guaranteed to return AddRec
2018-02-12 05:09:38 +00:00
pr40420.ll
[SCEV] Take correct loop in AddRec simplification. PR40420
2019-01-29 05:37:59 +00:00
predicated-trip-count.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
range-signedness.ll
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returned.ll
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scev-aa.ll
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scev-canonical-mode.ll
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scev-dispositions.ll
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scev-expander-existing-value-offset.ll
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scev-expander-incorrect-nowrap.ll
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scev-expander-reuse-gep.ll
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scev-expander-reuse-unroll.ll
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scev-expander-reuse-vect.ll
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scev-invalid.ll
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scev-prestart-nowrap.ll
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sext-inreg.ll
[SCEV] Simplify trunc-of-add/mul to add/mul-of-trunc under more circumstances.
2018-06-14 17:13:35 +00:00
sext-iv-0.ll
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sext-iv-1.ll
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sext-iv-2.ll
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sext-mul.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
sext-to-zext.ll
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sext-zero.ll
Revert "[SCEV] Add nuw/nsw to mul ops in StrengthenNoWrapFlags"
2018-06-19 04:09:44 +00:00
shift-op.ll
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shl-lshr-differentconstmask.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
sle.ll
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smax-br-phi-idioms.ll
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smax.ll
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solve-quadratic-i1.ll
[SCEV] Properly solve quadratic equations
2018-08-02 19:13:35 +00:00
solve-quadratic-overflow.ll
[SCEV] Properly solve quadratic equations
2018-08-02 19:13:35 +00:00
solve-quadratic.ll
[test] Fix ScalarEvolution test to allow __func__ with prototype
2018-12-02 16:49:28 +00:00
SolveQuadraticEquation.ll
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strip-injective-zext.ll
[SCEV] Simplify trunc-of-add/mul to add/mul-of-trunc under more circumstances.
2018-06-14 17:13:35 +00:00
trip-count2.ll
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trip-count3.ll
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trip-count4.ll
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trip-count5.ll
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trip-count6.ll
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trip-count7.ll
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trip-count8.ll
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trip-count9.ll
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trip-count10.ll
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trip-count11.ll
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trip-count12.ll
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trip-count13.ll
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trip-count14.ll
[SCEV] Make exact taken count calculation more optimistic
2018-03-27 07:30:38 +00:00
trip-count-pow2.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
trip-count-switch.ll
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trip-count-unknown-stride.ll
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trip-count.ll
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tripmultiple_calculation.ll
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trunc-simplify.ll
[SCEV] Simplify trunc-of-add/mul to add/mul-of-trunc under more circumstances.
2018-06-14 17:13:35 +00:00
truncate.ll
[SCEV] Fix buggy behavior in getAddExpr with truncs
2018-07-19 01:46:21 +00:00
undefined.ll
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unknown_phis.ll
[SCEV] Smart range calculation for SCEVUnknown Phis
2018-03-01 06:56:48 +00:00
unreachable-code.ll
[SCEV] Do not bother creating separate SCEVUnknown for unreachable nodes
2019-02-04 05:04:19 +00:00
unsimplified-loop.ll
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urem-0.ll
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ZeroStep.ll
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zext-divrem.ll
[SCEV] Re-apply r335197 (with Polly fixes).
2018-06-21 21:29:54 +00:00
zext-mul.ll
Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."
2018-07-13 23:58:46 +00:00
zext-signed-addrec.ll
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zext-wrap.ll
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