Sanjoy Das b864c1f76f [SCEV] Look at backedge dominating conditions (re-land r233447). ...

Summary:
This change teaches ScalarEvolution::isLoopBackedgeGuardedByCond to look
at edges within the loop body that dominate the latch.  We don't do an
exhaustive search for all possible edges, but only a quick walk up the
dom tree.

This re-lands r233447.  r233447 was reverted because it caused massive
compile-time regressions.  This change has a fix for the same issue.

llvm-svn: 233829

2015-04-01 18:24:06 +00:00

..

2007-07-15-NegativeStride.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

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

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

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

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

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

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2009-04-22-TruncCast.ll

Actually call FileCheck in tests

2014-02-16 13:27:39 +00:00

2009-05-09-PointerEdgeCount.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2009-07-04-GroupConstantsWidthMismatch.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

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

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

2012-05-18-LoopPredRecurse.ll

Fix known typos

2014-01-24 17:20:08 +00:00

2012-05-29-MulAddRec.ll

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and-xor.ll

Teach SCEV to handle more cases of 'and X, CST', specifically where CST is any number of contiguous 1 bits in a row, with any number of leading and trailing 0 bits.

2014-01-27 10:04:03 +00:00

avoid-infinite-recursion-0.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

avoid-infinite-recursion-1.ll

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avoid-smax-0.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

avoid-smax-1.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

div-overflow.ll

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do-loop.ll

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ext-antecedent.ll

[SCEV] Revert bailout added in r75511.

2015-03-26 17:28:26 +00:00

fold.ll

When simplifying a SCEV truncate by distributing, consider it a simplification to replace a cast, even if we end up with a trunc around the term. Fixes PR22960!

2015-03-20 02:25:00 +00:00

how-far-to-zero.ll

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incorrect-nsw.ll

Bugfix: SCEV incorrectly marks certain add recurrences as nsw

2015-02-09 18:34:55 +00:00

infer-prestart-no-wrap.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

infer-via-ranges.ll

[SCEV] Make isImpliedCond smarter.

2015-03-18 00:41:29 +00:00

latch-dominating-conditions.ll

[SCEV] Look at backedge dominating conditions (re-land r233447).

2015-04-01 18:24:06 +00:00

load-with-range-metadata.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

load.ll

[SCEV] Add a `scalar-evolution-print-constant-ranges' option

2015-03-09 21:43:39 +00:00

max-trip-count-address-space.ll

[SCEV] Add a `scalar-evolution-print-constant-ranges' option

2015-03-09 21:43:39 +00:00

max-trip-count.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

min-max-exprs.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

nowrap-preinc-limits.ll

[SCEV] make SCEV smarter about proving no-wrap.

2015-03-04 22:24:17 +00:00

nsw-offset-assume.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

nsw-offset.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

nsw.ll

[SCEV] Add a `scalar-evolution-print-constant-ranges' option

2015-03-09 21:43:39 +00:00

nw-sub-is-not-nw-add.ll

Make ScalarEvolution less aggressive with respect to no-wrap flags.

2015-01-22 00:48:47 +00:00

pointer-sign-bits.ll

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pr3909.ll

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pr22179.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

pr22641.ll

Fix bug 22641

2015-02-24 01:02:42 +00:00

pr22674.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

pr22856.ll

[SCEV] Fix PR22856.

2015-03-13 18:31:19 +00:00

range-signedness.ll

[SCEV] Unify getUnsignedRange and getSignedRange

2015-03-09 21:43:43 +00:00

scev-aa.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

scev-expander-incorrect-nowrap.ll

Bugfix: SCEVExpander incorrectly marks increment operations as no-wrap

2015-02-25 20:02:59 +00:00

scev-invalid.ll

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scev-prestart-nowrap.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

sext-inreg.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

sext-iv-0.ll

[SCEV] Add a `scalar-evolution-print-constant-ranges' option

2015-03-09 21:43:39 +00:00

sext-iv-1.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

sext-iv-2.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

sle.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

smax.ll

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SolveQuadraticEquation.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

trip-count2.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

trip-count3.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

trip-count4.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

trip-count5.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

trip-count6.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

trip-count7.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

trip-count8.ll

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trip-count9.ll

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trip-count10.ll

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trip-count11.ll

[SCEV] Add a `scalar-evolution-print-constant-ranges' option

2015-03-09 21:43:39 +00:00

trip-count12.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

trip-count-pow2.ll

ScalarEvolution: HowFarToZero was wrongly using signed division

2014-11-16 07:30:35 +00:00

trip-count-switch.ll

ScalarEvolution: Analyze trip count of loops with a switch guarding the exit.

2014-02-11 15:44:32 +00:00

trip-count.ll

When forming an addrec out of a phi don't just look at the last computation and steal its flags for our own, there may be other computations in the middle. Check whether the LHS of the computation is the phi itself and then we know it's safe to steal the flags. Fixes PR22795.

2015-03-13 01:37:52 +00:00

undefined.ll

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unreachable-code.ll

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unsimplified-loop.ll

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zext-signed-addrec.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

zext-wrap.ll

[SCEV] Add a `scalar-evolution-print-constant-ranges' option

2015-03-09 21:43:39 +00:00