Matthew Voss f257d99f7a [GVN] Avoid casting a vector of size less than 8 bits to i8 ...

Summary:
A reprise of D25849.

This crash was found through fuzzing some time ago and was documented in PR28879.

No check for load size has been added due to the following tests:
  - Transforms/GVN/invariant.group.ll
  - Transforms/GVN/pr10820.ll

These tests expect load sizes that are not a multiple of eight.

Thanks to @davide for the original patch.

Reviewers: nlopes, davide, RKSimon, reames, efriedma

Reviewed By: efriedma

Subscribers: davide, llvm-commits, Prazek

Differential Revision: https://reviews.llvm.org/D48330

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335294 91177308-0d34-0410-b5e6-96231b3b80d8

2018-06-21 21:43:20 +00:00

..

PRE

[Debugify] Move debug value intrinsics closer to their operand defs

2018-06-06 19:05:42 +00:00

2007-07-25-DominatedLoop.ll

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

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

2007-07-25-InfiniteLoop.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

2007-07-25-Loop.ll

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

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

2007-07-25-NestedLoop.ll

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

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

2007-07-25-SinglePredecessor.ll

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

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

2007-07-26-InterlockingLoops.ll

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

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

2007-07-26-NonRedundant.ll

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

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

2007-07-26-PhiErasure.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

2007-07-30-PredIDom.ll

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

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

2007-07-31-NoDomInherit.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

2007-07-31-RedundantPhi.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

2008-02-12-UndefLoad.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

2008-02-13-NewPHI.ll

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

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

2008-07-02-Unreachable.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

2008-12-09-SelfRemove.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

2008-12-12-RLE-Crash.ll

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

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

2008-12-14-rle-reanalyze.ll

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

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

2008-12-15-CacheVisited.ll

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

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

2009-01-21-SortInvalidation.ll

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

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

2009-01-22-SortInvalidation.ll

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

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

2009-03-10-PREOnVoid.ll

[opaque pointer type] Add textual IR support for explicit type parameter for global aliases

2015-09-11 03:22:04 +00:00

2009-07-13-MemDepSortFail.ll

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

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

2009-11-12-MemDepMallocBitCast.ll

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

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

2010-03-31-RedundantPHIs.ll

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

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

2010-05-08-OneBit.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

2010-11-13-Simplify.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

2011-04-27-phioperands.ll

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

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

2011-07-07-MatchIntrinsicExtract.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

2011-09-07-TypeIdFor.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

2012-05-22-PreCrash.ll

Fix PR12858, a crash due to GVN's PRE not fully removing an instruction from the

2012-05-22 14:17:53 +00:00

2016-08-30-MaskedScatterGather.ll

Support arbitrary address space pointers in masked gather/scatter intrinsics.

2017-05-03 12:28:54 +00:00

assume-equal.ll

[Devirtualization] MemDep returns non-local !invariant.group dependencies

2017-01-12 11:33:58 +00:00

basic-undef-test.ll

Update BasicAliasAnalysis to understand that nothing aliases with undef values.

2015-05-05 18:10:49 +00:00

basic.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

big-endian.ll

Do not widen load for different variable in GVN.

2016-09-09 18:42:35 +00:00

bitcast-of-call.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

br-identical.ll

GVN: If a branch has two identical successors, we cannot declare either dead.

2015-06-25 18:32:02 +00:00

calloc-load-removal.ll

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

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

calls-nonlocal.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

calls-readonly.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

commute.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

cond_br2.ll

Add address space mangling to lifetime intrinsics

2017-04-10 20:18:21 +00:00

cond_br.ll

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

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

condprop.ll

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

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

crash-no-aa.ll

[PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible

2015-09-09 17:55:00 +00:00

crash.ll

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

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

dbg-redundant-load.ll

[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.

2018-05-09 02:40:45 +00:00

debugloc.ll

Do not propagate DebugLoc across basic blocks

2017-01-31 20:57:13 +00:00

edge.ll

only propagate equality comparisons of FP values that we are certain are non-zero

2015-02-25 22:46:08 +00:00

fence.ll

[Debugify] Move debug value intrinsics closer to their operand defs

2018-06-06 19:05:42 +00:00

flags.ll

[GVN] Respect fast-math-flags on fcmps

2016-04-22 06:37:51 +00:00

fold-const-expr.ll

Fix some DOS-style line endings that I suspect snuck in from one of the

2016-12-23 02:02:26 +00:00

fpmath.ll

IR: Make metadata typeless in assembly

2014-12-15 19:07:53 +00:00

funclet.ll

[IR] Reformulate LLVM's EH funclet IR

2015-12-12 05:38:55 +00:00

int_sideeffect.ll

Add an @llvm.sideeffect intrinsic

2017-11-08 21:59:51 +00:00

invariant.group.ll

Dissallow non-empty metadata for invariant.group

2018-05-18 23:53:46 +00:00

invariant.start.ll

[AliasAnalysis] Treat invariant.start as read-memory

2016-08-09 17:18:05 +00:00

lifetime-simple.ll

Add address space mangling to lifetime intrinsics

2017-04-10 20:18:21 +00:00

load-constant-mem.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

load-from-unreachable-predecessor.ll

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

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

malloc-load-removal.ll

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

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

MemdepMiscompile.ll

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

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

no_speculative_loads_with_asan.ll

Hardware-assisted AddressSanitizer (llvm part).

2017-12-09 00:21:41 +00:00

noalias.ll

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

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

non-integral-pointers.ll

[GVN] Don't coerce non-integral pointers to integers or vice versa

2017-04-19 18:21:09 +00:00

non-local-offset.ll

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

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

nonescaping-malloc.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

null-aliases-nothing.ll

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

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

opt-remarks.ll

[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.

2018-05-09 02:40:45 +00:00

phi-translate-partial-alias.ll

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

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

pr10820.ll

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

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

pr12979.ll

[GVN] Intersect the IR flags when CSE'ing two instructions

2015-06-24 21:52:25 +00:00

pr14166.ll

[InstSimplify] Cast folding can be made more generic

2016-07-26 17:58:05 +00:00

pr17732.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

pr17852.ll

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

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

pr24397.ll

[PHITransAddr] Don't assume that instruction operands are translatable

2015-08-09 15:43:02 +00:00

pr24426.ll

Preserve CFG in MergedLoadStoreMotion. This fixes PR24426.

2015-10-18 19:34:10 +00:00

pr25440.ll

Do not widen load for different variable in GVN.

2016-09-09 18:42:35 +00:00

pr28562.ll

[IR] andIRFlags and copyIRFlags needs to handle GEP

2016-07-15 05:02:31 +00:00

pr28879.ll

[GVN] Avoid casting a vector of size less than 8 bits to i8

2018-06-21 21:43:20 +00:00

pr32314.ll

[BasicAA] Add test case that goes with r305481.

2017-06-15 17:27:56 +00:00

pr34908.ll

[GVN] Don't replace constants with constants.

2017-10-11 04:21:51 +00:00

pr36063.ll

Mark MergedLoadStoreMotion as not preserving MemDep results

2018-02-23 10:41:57 +00:00

pre-compare.ll

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

2015-04-16 23:24:18 +00:00

pre-new-inst.ll

GVN: tolerate an instruction being replaced without existing in the leaderboard

2015-07-14 21:03:18 +00:00

propagate-ir-flags.ll

Fixed the lost FastMathFlags in GVN(Global Value Numbering).

2016-11-22 20:52:53 +00:00

range.ll

[GVN] Make a test case more robust

2015-10-28 03:20:05 +00:00

readattrs.ll

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

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

rle-must-alias.ll

[GVN] Use FileCheck instead of grep for tests.

2016-07-17 23:21:26 +00:00

rle-no-phi-translate.ll

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

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

rle-nonlocal.ll

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

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

stale-loop-info.ll

[GVN] When merging blocks update LoopInfo if it's available

2016-12-01 03:56:43 +00:00

tbaa.ll

[Analysis] Generate more precise TBAA tags when one access encloses the other

2017-12-18 20:05:20 +00:00

unreachable_block_infinite_loop.ll

[PHITransAddr] Don't translate unreachable values

2015-06-01 00:15:08 +00:00

volatile-nonvolatile.ll

More detailed dependence test between volatile and non-volatile accesses

2016-02-22 23:07:43 +00:00