Sanjoy Das cd5029d001 [SCEV] Unify getUnsignedRange and getSignedRange ... Summary: This removes some duplicated code, and also helps optimization: e.g. in the test case added, `%idx ULT 128` in `@x` is not currently optimized to `true` by `-indvars` but will be, after this change. The only functional change in ths commit is that for add recurrences, ScalarEvolution::getRange will be more aggressive -- computing the unsigned (resp. signed) range for a SCEVAddRecExpr will now look at the NSW (resp. NUW) bits and check for signed (resp. unsigned) overflow. This can be a strict improvement in some cases (such as the attached test case), and should be no worse in other cases. Reviewers: atrick, nlewycky Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8142 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231709 91177308-0d34-0410-b5e6-96231b3b80d8		2015-03-09 21:43:43 +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
2007-08-06-Unsigned.ll
2007-09-27-LargeStepping.ll
2007-11-14-SignedAddRec.ll
2007-11-18-OrInstruction.ll
2008-02-11-ReversedCondition.ll
2008-02-12-SMAXTripCount.ll
2008-02-15-UMax.ll
2008-05-25-NegativeStepToZero.ll
2008-06-12-BinomialInt64.ll
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
2008-07-19-InfiniteLoop.ll
2008-07-19-WrappingIV.ll
2008-07-29-SGTTripCount.ll
2008-07-29-SMinExpr.ll
2008-08-04-IVOverflow.ll
2008-08-04-LongAddRec.ll
2008-11-02-QuadraticCrash.ll
2008-11-15-CubicOOM.ll
2008-11-18-LessThanOrEqual.ll
2008-11-18-Stride1.ll
2008-11-18-Stride2.ll
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
2008-12-14-StrideAndSigned.ll
2008-12-15-DontUseSDiv.ll
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
2011-03-09-ExactNoMaxBECount.ll
2011-04-26-FoldAddRec.ll
2011-10-04-ConstEvolve.ll
2012-03-26-LoadConstant.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
2012-05-18-LoopPredRecurse.ll
2012-05-29-MulAddRec.ll
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
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
do-loop.ll
fold.ll	[SCEV] Add a `scalar-evolution-print-constant-ranges' option	2015-03-09 21:43:39 +00:00
how-far-to-zero.ll
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
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	Make DataLayout Non-Optional in the Module	2015-03-04 18:43:29 +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
pr3909.ll
pr22179.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +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
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
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	[SCEV] Add a `scalar-evolution-print-constant-ranges' option	2015-03-09 21:43:39 +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
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
trip-count9.ll
trip-count10.ll
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	[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction	2015-02-27 19:29:02 +00:00
undefined.ll
unreachable-code.ll
unsimplified-loop.ll
zext-signed-addrec.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
zext-wrap.ll	[SCEV] Add a `scalar-evolution-print-constant-ranges' option	2015-03-09 21:43:39 +00:00