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Piotr Padlewski 9530883e8c [Devirtualization] MemDep returns non-local !invariant.group dependencies 
Summary:
Memory Dependence Analysis was limited to return only local dependencies
for invariant.group handling. Now it returns NonLocal when it finds it
and then by asking getNonLocalPointerDependency we get found dep.

Thanks to this we are able to devirtualize loops!

    void indirect(A &a, int n) {
      for (int i = 0 ; i < n; i++)
        a.foo();

    }
    void test(int n) {
      A a;
      indirect(a);
    }

After inlining a.foo() will be changed to direct call, even if foo and A::A()
is external (but only if vtable definition is be available).

Reviewers: nlewycky, dberlin, chandlerc, rsmith

Subscribers: mehdi_amini, davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D28137

llvm-svn: 291762
 		2017-01-12 11:33:58 +00:00
..
PRE [DWARF] Null out the debug locs of load instructions that have been moved by GVN 2017-01-04 23:58:26 +00:00
2007-07-25-DominatedLoop.ll
…
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
…
2007-07-25-NestedLoop.ll
…
2007-07-25-SinglePredecessor.ll
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2007-07-26-InterlockingLoops.ll
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2007-07-26-NonRedundant.ll
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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
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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
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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
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2008-12-14-rle-reanalyze.ll
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2008-12-15-CacheVisited.ll
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2009-01-21-SortInvalidation.ll
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2009-01-22-SortInvalidation.ll
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2009-03-10-PREOnVoid.ll
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2009-07-13-MemDepSortFail.ll
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2009-11-12-MemDepMallocBitCast.ll
…
2010-03-31-RedundantPHIs.ll
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2010-05-08-OneBit.ll
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2010-11-13-Simplify.ll
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2011-04-27-phioperands.ll
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2011-07-07-MatchIntrinsicExtract.ll
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2011-09-07-TypeIdFor.ll
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2012-05-22-PreCrash.ll
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2016-08-30-MaskedScatterGather.ll IntrArgMemOnly is only defined (and current AA machinery only sanely supports) pointer arguments, and these intrinsics have vector of pointer arguments. Remove ArgMemOnly until we either have the machinery, define a new attribute, or something similar 2016-08-30 19:58:48 +00:00
MemdepMiscompile.ll
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assume-equal.ll [Devirtualization] MemDep returns non-local !invariant.group dependencies 2017-01-12 11:33:58 +00:00
basic-undef-test.ll
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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
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calloc-load-removal.ll
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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
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cond_br.ll
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cond_br2.ll
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condprop.ll
…
crash-no-aa.ll
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crash.ll
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dbg-redundant-load.ll When GVN removes a redundant load, it should not modify the debug location of the dominating load. 2016-12-07 12:31:36 +00:00
edge.ll
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fence.ll Allow value forwarding past release fences in GVN 2016-03-25 22:40:35 +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
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funclet.ll
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invariant.group.ll [Devirtualization] MemDep returns non-local !invariant.group dependencies 2017-01-12 11:33:58 +00:00
invariant.start.ll [AliasAnalysis] Treat invariant.start as read-memory 2016-08-09 17:18:05 +00:00
lifetime-simple.ll
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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
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malloc-load-removal.ll
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no_speculative_loads_with_asan.ll Do not widen load for different variable in GVN. 2016-09-09 18:42:35 +00:00
noalias.ll
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non-local-offset.ll
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nonescaping-malloc.ll [GVN] Use FileCheck instead of grep for tests. 2016-07-17 23:21:26 +00:00
null-aliases-nothing.ll
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opt-remarks.ll [GVN, OptDiag] Print the interesting instructions involved in missed load-elimination 2016-12-01 17:34:50 +00:00
phi-translate-partial-alias.ll
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pr10820.ll
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pr12979.ll
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pr14166.ll [InstSimplify] Cast folding can be made more generic 2016-07-26 17:58:05 +00:00
pr17732.ll
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pr17852.ll
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pr24397.ll
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pr24426.ll
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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
pre-compare.ll
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pre-new-inst.ll
…
propagate-ir-flags.ll Fixed the lost FastMathFlags in GVN(Global Value Numbering). 2016-11-22 20:52:53 +00:00
range.ll
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readattrs.ll
…
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
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rle-nonlocal.ll
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stale-loop-info.ll [GVN] When merging blocks update LoopInfo if it's available 2016-12-01 03:56:43 +00:00
tbaa.ll [Verifier] Add verification for TBAA metadata 2016-12-11 20:07:15 +00:00
unreachable_block_infinite_loop.ll
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volatile-nonvolatile.ll
…