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llvm-mirror/test/Transforms/IndVarSimplify
Sanjoy Das 6649494805 [SCEV] Exploit A < B => (A+K) < (B+K) when possible
Summary:

This change teaches SCEV's `isImpliedCond` two new identities:

  A u< B u< -C          =>  (A + C) u< (B + C)
  A s< B s< INT_MIN - C =>  (A + C) s< (B + C)

While these are useful on their own, they're really intended to support
D12950.

Reviewers: atrick, reames, majnemer, nlewycky, hfinkel

Subscribers: aadg, sanjoy, llvm-commits

Differential Revision: http://reviews.llvm.org/D12948

llvm-svn: 248606
2015-09-25 19:59:49 +00:00
..
NVPTX
2002-09-09-PointerIndVar.ll
2003-04-16-ExprAnalysis.ll
2003-09-23-NotAtTop.ll
2003-12-10-RemoveInstrCrash.ll
2003-12-15-Crash.ll
2004-03-10-PHIInsertionBug.ll
2004-04-05-InvokeCastCrash.ll
2004-04-07-ScalarEvolutionCrash.ll
2005-02-11-InvokeCrash.ll
2005-02-17-TruncateExprCrash.ll
2005-02-26-ExitValueCompute.ll
2005-06-15-InstMoveCrash.ll
2005-11-18-Crash.ll
2006-03-31-NegativeStride.ll
2006-06-16-Indvar-LCSSA-Crash.ll
2006-09-20-LFTR-Crash.ll
2006-12-10-BitCast.ll
2007-01-06-TripCount.ll
2007-06-06-DeleteDanglesPtr.ll
2007-11-23-BitcastCrash.ll
2008-06-15-SCEVExpanderBug.ll
2008-09-02-IVType.ll
2008-10-03-CouldNotCompute.ll
2008-11-25-APFloatAssert.ll
2009-04-14-shorten_iv_vars.ll
2009-04-15-shorten-iv-vars-2.ll
2009-04-22-IndvarCrash.ll
2009-04-27-Floating.ll
2009-05-24-useafterfree.ll
2011-09-10-widen-nsw.ll
2011-09-19-vectoriv.ll
2011-09-27-hoistsext.ll
2011-10-27-lftrnull.ll
2011-11-01-lftrptr.ll
2011-11-15-multiexit.ll
2011-11-17-selfphi.ll
2012-07-17-lftr-undef.ll
2012-10-19-congruent-constant.ll
2014-06-21-congruent-constant.ll
ada-loops.ll
ashr-tripcount.ll
avoid-i0.ll
backedge-on-min-max.ll
bec-cmp.ll Make ScalarEvolution::isKnownPredicate a little smarter 2015-08-19 01:51:51 +00:00
casted-argument.ll
crash.ll
dangling-use.ll
divide-pointer.ll
dont-recompute.ll
elim-extend.ll
eliminate-comparison.ll [SCEV] Exploit A < B => (A+K) < (B+K) when possible 2015-09-25 19:59:49 +00:00
eliminate-max.ll
eliminate-rem.ll
exit_value_test2.ll
exit_value_test3.ll
exit_value_tests.ll
floating-point-iv.ll
indirectbr.ll
interesting-invoke-use.ll
iterationCount_zext_or_trunc.ll
iv-fold.ll
iv-sext.ll
iv-widen.ll
iv-zext.ll
lcssa-preservation.ll
lftr_simple.ll
lftr-address-space-pointers.ll
lftr-extend-const.ll
lftr-other-uses.ll
lftr-promote.ll
lftr-reuse.ll
lftr-udiv-tripcount.ll
lftr-zext.ll
loop_evaluate7.ll
loop_evaluate8.ll
loop_evaluate9.ll
loop_evaluate10.ll
loop_evaluate11.ll
loop_evaluate_1.ll
loop_evaluate_2.ll
loop_evaluate_3.ll
loop_evaluate_4.ll
loop_evaluate_5.ll
loop_evaluate_6.ll
loop-invariant-conditions.ll [IndVars] Make loop varying predicates loop invariant. 2015-07-27 21:42:49 +00:00
lrev-existing-umin.ll [IndVars] Try to use existing values in RewriteLoopExitValues. 2015-07-09 18:46:12 +00:00
masked-iv.ll
no-iv-rewrite.ll
overflowcheck.ll
phi-uses-value-multiple-times.ll
polynomial-expand.ll
pr18223.ll
pr20680.ll
pr22222.ll
pr24356.ll [IndVars] Fix PR24356. 2015-08-06 20:43:41 +00:00
pr24783.ll [IndVars] Fix PR24783. 2015-09-15 23:45:39 +00:00
preserve-signed-wrap.ll
promote-iv-to-eliminate-casts.ll
sharpen-range.ll
shrunk-constant.ll
signed-trip-count.ll
single-element-range.ll
sink-alloca.ll
sink-trapping.ll
strengthen-overflow.ll
tripcount_compute.ll
tripcount_infinite.ll FileCheck'ify some wc/grep based tests; NFCI. 2015-07-28 03:50:09 +00:00
udiv-invariant-but-traps.ll
udiv.ll
uglygep.ll
ult-sub-to-eq.ll
use-range-metadata.ll
variable-stride-ivs-0.ll
variable-stride-ivs-1.ll
verify-scev.ll
widen-loop-comp.ll [IndVars] Fix a bug in r248045. 2015-09-20 01:52:18 +00:00
widen-nsw.ll