Alexandros Lamprineas a9702ef6e8 [GVN] Don't perform scalar PRE on GEPs ...

Partial Redundancy Elimination of GEPs prevents CodeGenPrepare from
sinking the addressing mode computation of memory instructions back
to its uses. The problem comes from the insertion of PHIs, which
confuse CGP and make it bail.

I've autogenerated the check lines of an existing test and added a
store instruction to demonstrate the motivation behind this change.
The store is now using the gep instead of a phi.

Differential Revision: https://reviews.llvm.org/D55009

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@348496 91177308-0d34-0410-b5e6-96231b3b80d8

2018-12-06 16:11:58 +00:00

..

PRE

[GVN] Don't perform scalar PRE on GEPs

2018-12-06 16:11:58 +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

…

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

…

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

…

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

…

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

[GVN] Invalidate cached info for values replaced by equality propagation

2018-09-10 12:23:05 +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

Implement strip.invariant.group

2018-07-02 04:49:30 +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

no-mem-dep-info.ll

[GVN] Assign new value number to calls reading memory, if there is no MemDep info.

2018-08-21 19:11:27 +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

Make YAML quote forward slashes.

2018-10-12 16:31:20 +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

[Local] Keep K's range if K does not move when combining metadata.

2018-10-27 16:53:45 +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

unreachable-predecessor.ll

[GVN] Invalidate cached info for phis when setting dead predecessors to undef

2018-08-23 12:48:17 +00:00

volatile-nonvolatile.ll

More detailed dependence test between volatile and non-volatile accesses

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