Sanjoy Das 17e08f50b9 [SCEV] Strengthen SCEVExpander::isHighCostExpansion. ...

Summary:

Teach `isHighCostExpansion` to consider divisions by power-of-two
constants as cheap and add a test case.  This change is needed for a new
user of `isHighCostExpansion` that will be added in a subsequent change.

Depends on D8995.

Reviewers: atrick

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8993

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234845 91177308-0d34-0410-b5e6-96231b3b80d8

2015-04-14 03:20:32 +00:00

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NVPTX

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

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2002-09-09-PointerIndVar.ll

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2003-04-16-ExprAnalysis.ll

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2003-09-23-NotAtTop.ll

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2003-12-10-RemoveInstrCrash.ll

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2003-12-15-Crash.ll

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2004-03-10-PHIInsertionBug.ll

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2004-04-05-InvokeCastCrash.ll

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2004-04-07-ScalarEvolutionCrash.ll

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2005-02-11-InvokeCrash.ll

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2005-02-17-TruncateExprCrash.ll

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2005-02-26-ExitValueCompute.ll

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2005-06-15-InstMoveCrash.ll

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2005-11-18-Crash.ll

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2006-03-31-NegativeStride.ll

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2006-06-16-Indvar-LCSSA-Crash.ll

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2006-09-20-LFTR-Crash.ll

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2006-12-10-BitCast.ll

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2007-01-06-TripCount.ll

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2007-06-06-DeleteDanglesPtr.ll

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2007-11-23-BitcastCrash.ll

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2008-06-15-SCEVExpanderBug.ll

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2008-09-02-IVType.ll

Make DataLayout Non-Optional in the Module

2015-03-04 18:43:29 +00:00

2008-10-03-CouldNotCompute.ll

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2008-11-25-APFloatAssert.ll

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2009-04-14-shorten_iv_vars.ll

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2009-04-15-shorten-iv-vars-2.ll

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2009-04-22-IndvarCrash.ll

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2009-04-27-Floating.ll

Make DataLayout Non-Optional in the Module

2015-03-04 18:43:29 +00:00

2009-05-24-useafterfree.ll

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2011-09-10-widen-nsw.ll

This patch teaches IndVarSimplify to add nuw and nsw to certain kinds

2015-01-06 19:02:56 +00:00

2011-09-19-vectoriv.ll

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2011-09-27-hoistsext.ll

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2011-10-27-lftrnull.ll

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2011-11-01-lftrptr.ll

Verifier: Call verifyModule() from llc and opt

2015-03-27 22:04:28 +00:00

2011-11-15-multiexit.ll

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2011-11-17-selfphi.ll

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2012-07-17-lftr-undef.ll

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2012-10-19-congruent-constant.ll

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2014-06-21-congruent-constant.ll

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ada-loops.ll

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ashr-tripcount.ll

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avoid-i0.ll

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backedge-on-min-max.ll

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casted-argument.ll

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crash.ll

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dangling-use.ll

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

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divide-pointer.ll

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dont-recompute.ll

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elim-extend.ll

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

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eliminate-comparison.ll

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eliminate-max.ll

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eliminate-rem.ll

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exit_value_tests.ll

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floating-point-iv.ll

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indirectbr.ll

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interesting-invoke-use.ll

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iterationCount_zext_or_trunc.ll

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iv-fold.ll

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iv-sext.ll

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iv-widen.ll

Make DataLayout Non-Optional in the Module

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iv-zext.ll

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lcssa-preservation.ll

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lftr_simple.ll

Make DataLayout Non-Optional in the Module

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lftr-address-space-pointers.ll

Revert some changes that were made to fix PR20680.

2015-03-02 21:41:07 +00:00

lftr-extend-const.ll

Make DataLayout Non-Optional in the Module

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lftr-other-uses.ll

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lftr-promote.ll

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lftr-reuse.ll

Revert some changes that were made to fix PR20680.

2015-03-02 21:41:07 +00:00

lftr-udiv-tripcount.ll

[SCEV] Strengthen SCEVExpander::isHighCostExpansion.

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lftr-zext.ll

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loop_evaluate7.ll

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loop_evaluate8.ll

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loop_evaluate9.ll

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loop_evaluate10.ll

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loop_evaluate11.ll

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loop_evaluate_1.ll

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loop_evaluate_2.ll

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loop_evaluate_3.ll

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loop_evaluate_4.ll

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loop_evaluate_5.ll

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loop_evaluate_6.ll

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masked-iv.ll

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no-iv-rewrite.ll

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overflowcheck.ll

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phi-uses-value-multiple-times.ll

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polynomial-expand.ll

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pr18223.ll

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pr20680.ll

Make DataLayout Non-Optional in the Module

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pr22222.ll

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preserve-signed-wrap.ll

Make DataLayout Non-Optional in the Module

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promote-iv-to-eliminate-casts.ll

Make DataLayout Non-Optional in the Module

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sharpen-range.ll

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shrunk-constant.ll

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signed-trip-count.ll

Make DataLayout Non-Optional in the Module

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single-element-range.ll

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sink-alloca.ll

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sink-trapping.ll

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strengthen-overflow.ll

Fix PR22222

2015-01-15 01:46:09 +00:00

tripcount_compute.ll

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tripcount_infinite.ll

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udiv-invariant-but-traps.ll

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udiv.ll

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uglygep.ll

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ult-sub-to-eq.ll

Make DataLayout Non-Optional in the Module

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use-range-metadata.ll

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variable-stride-ivs-0.ll

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variable-stride-ivs-1.ll

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verify-scev.ll

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widen-loop-comp.ll

Make DataLayout Non-Optional in the Module

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widen-nsw.ll

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

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