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llvm-6502/test/Analysis/ScalarEvolution
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Sanjoy Das 1af442e572 Bugfix: ScalarEvolution incorrectly assumes that the start of certain 
add recurrences don't overflow.

This change makes the optimization more restrictive.  It still assumes
that an overflowing `add nsw` is undefined behavior; and this change
will need revisiting once we have a consistent semantics for poison
values.

Differential Revision: http://reviews.llvm.org/D7331



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228552 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-08 22:52:17 +00:00
..
2007-07-15-NegativeStride.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
2007-08-06-MisinterpretBranch.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2007-08-06-Unsigned.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2007-09-27-LargeStepping.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2007-11-14-SignedAddRec.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2007-11-18-OrInstruction.ll
…
2008-02-11-ReversedCondition.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-02-12-SMAXTripCount.ll
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2008-02-15-UMax.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-05-25-NegativeStepToZero.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-06-12-BinomialInt64.ll
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2008-07-12-UnneededSelect1.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-07-12-UnneededSelect2.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-07-19-InfiniteLoop.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-07-19-WrappingIV.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-07-29-SGTTripCount.ll
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2008-07-29-SMinExpr.ll
…
2008-08-04-IVOverflow.ll
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2008-08-04-LongAddRec.ll
…
2008-11-02-QuadraticCrash.ll
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2008-11-15-CubicOOM.ll
…
2008-11-18-LessThanOrEqual.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-11-18-Stride1.ll
Rewrite SCEV's backedge taken count computation.
2013-11-06 02:08:26 +00:00
2008-11-18-Stride2.ll
Rewrite SCEV's backedge taken count computation.
2013-11-06 02:08:26 +00:00
2008-12-08-FiniteSGE.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-12-11-SMaxOverflow.ll
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2008-12-14-StrideAndSigned.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2008-12-15-DontUseSDiv.ll
Rewrite SCEV's backedge taken count computation.
2013-11-06 02:08:26 +00:00
2009-01-02-SignedNegativeStride.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +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
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
2009-07-04-GroupConstantsWidthMismatch.ll
…
2010-09-03-RequiredTransitive.ll
Add a check to the test Analysis/ScalarEvolution/2010-09-03-RequiredTransitive.ll
2012-12-30 01:42:34 +00:00
2011-03-09-ExactNoMaxBECount.ll
Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID
2012-12-30 02:33:22 +00:00
2011-04-26-FoldAddRec.ll
Add newlines at end of test files, no functionality change
2013-07-13 22:00:58 +00:00
2011-10-04-ConstEvolve.ll
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2012-03-26-LoadConstant.ll
Actually call FileCheck in tests
2014-02-16 13:27:39 +00:00
2012-05-18-LoopPredRecurse.ll
Fix known typos
2014-01-24 17:20:08 +00:00
2012-05-29-MulAddRec.ll
Fix broken check lines.
2012-08-17 12:28:26 +00:00
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
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avoid-infinite-recursion-1.ll
…
avoid-smax-0.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
avoid-smax-1.ll
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div-overflow.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
do-loop.ll
FileCheck-ize tests.
2013-08-22 00:51:19 +00:00
fold.ll
Fix crasher introduced in r200203 and caught by a libc++ buildbot. Don't assume that getMulExpr returns a SCEVMulExpr, it may have simplified it to something else!
2014-01-27 10:47:44 +00:00
how-far-to-zero.ll
If the step value is a constant zero, the loop isn't going to terminate. Fixes
2012-06-28 23:44:57 +00:00
load-with-range-metadata.ll
IR: Make metadata typeless in assembly
2014-12-15 19:07:53 +00:00
load.ll
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max-trip-count-address-space.ll
Teach ScalarEvolution about pointer address spaces
2013-09-10 19:55:24 +00:00
max-trip-count.ll
Adding testcase for PR18886.
2014-05-27 06:44:25 +00:00
nsw-offset-assume.ll
Make use @llvm.assume for loop guards in ScalarEvolution
2014-09-07 21:37:59 +00:00
nsw-offset.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
nsw.ll
[SCEV] Improve Scalar Evolution's use of no {un,}signed wrap flags
2014-10-31 11:40:32 +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
Fix PR22179.
2015-01-10 23:41:24 +00:00
scev-aa.ll
Convert the uses of '|&' to use '2>&1 |' instead, which works on old
2012-07-02 18:37:59 +00:00
scev-invalid.ll
Fix SCEV forgetMemoizedResults should search and destroy backedge exprs.
2013-03-26 03:14:53 +00:00
scev-prestart-nowrap.ll
Bugfix: ScalarEvolution incorrectly assumes that the start of certain
2015-02-08 22:52:17 +00:00
sext-inreg.ll
Convert all tests using TCL-style quoting to use shell-style quoting.
2012-07-02 12:47:22 +00:00
sext-iv-0.ll
…
sext-iv-1.ll
Use FileCheck in a few tests.
2014-11-06 15:05:51 +00:00
sext-iv-2.ll
…
sle.ll
…
smax.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
SolveQuadraticEquation.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
trip-count2.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
trip-count3.ll
Rewrite SCEV's backedge taken count computation.
2013-11-06 02:08:26 +00:00
trip-count4.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
trip-count5.ll
Convert all tests using TCL-style quoting to use shell-style quoting.
2012-07-02 12:47:22 +00:00
trip-count6.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
trip-count7.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
trip-count8.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
trip-count9.ll
Rewrite SCEV's backedge taken count computation.
2013-11-06 02:08:26 +00:00
trip-count10.ll
Unit test for SCEV fix r182989, PR16130.
2013-05-31 16:42:41 +00:00
trip-count11.ll
Fix creating bitcasts between address spaces in SCEV.
2013-10-21 18:41:10 +00:00
trip-count12.ll
…
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
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00
undefined.ll
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unreachable-code.ll
…
unsimplified-loop.ll
…
zext-signed-addrec.ll
Fixed old typo in ScalarEvolution, that caused wrong SCEVs zext operation.
2014-01-09 12:26:12 +00:00
zext-wrap.ll
FileCheckize some of the testcases.
2013-08-05 23:43:18 +00:00