Joseph Tremoulet c446570fee [Mem2Reg] Fix nondeterministic corner case ...

Summary:
When mem2reg inserts phi nodes in blocks with unreachable predecessors,
it adds undef operands for those incoming edges.  When there are
multiple such predecessors, the order is currently based on the address
of the BasicBlocks.  This change fixes that by using the BBNumbers in
the sort/search predicates, as is done elsewhere in mem2reg to ensure
determinism.

Also adds a testcase with a bunch of unreachable preds, which
(nodeterministically) fails without the fix.


Reviewers: majnemer

Reviewed By: majnemer

Subscribers: mgrang, llvm-commits

Differential Revision: https://reviews.llvm.org/D55077

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@348024 91177308-0d34-0410-b5e6-96231b3b80d8

2018-11-30 19:20:02 +00:00

..

2002-03-28-UninitializedVal.ll

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

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

2002-05-01-ShouldNotPromoteThisAlloca.ll

…

2003-04-10-DFNotFound.ll

…

2003-04-18-DeadBlockProblem.ll

…

2003-04-24-MultipleIdenticalSuccessors.ll

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

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

2003-06-26-IterativePromote.ll

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

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

2003-10-05-DeadPHIInsertion.ll

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

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

2005-06-30-ReadBeforeWrite.ll

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

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

2005-11-28-Crash.ll

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

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

2007-08-27-VolatileLoadsStores.ll

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

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

atomic.ll

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

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

ConvertDebugInfo2.ll

[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.

2016-04-15 15:57:41 +00:00

ConvertDebugInfo.ll

Remove the obsolete offset parameter from @llvm.dbg.value

2017-07-28 20:21:02 +00:00

crash.ll

Move the personality function from LandingPadInst to Function

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

dbg-addr-inline-dse.ll

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

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

dbg-addr.ll

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

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

dbg-inline-scope-for-phi.ll

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

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

debug-alloca-phi-2.ll

Re-apply "[DebugInfo] Check size of variable in ConvertDebugDeclareToDebugValue"

2018-06-15 13:48:55 +00:00

debug-alloca-phi.ll

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

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

debug-alloca-vla-1.ll

Improve ConvertDebugDeclareToDebugValue

2018-06-26 06:17:00 +00:00

debug-alloca-vla-2.ll

Improve ConvertDebugDeclareToDebugValue

2018-06-26 06:17:00 +00:00

ignore-lifetime.ll

Add address space mangling to lifetime intrinsics

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

optnone.ll

[Mem2Reg] Respect optnone

2015-12-11 13:36:59 +00:00

pr24179.ll

[PM] Port Mem2Reg to the new pass manager.

2016-06-14 03:22:22 +00:00

pr37632-unreachable-list-of-stores.ll

[Mem2Reg] Avoid replacing load with itself in promoteSingleBlockAlloca.

2018-06-07 11:09:05 +00:00

preserve-nonnull-load-metadata.ll

Preserve nonnull metadata on Loads through SROA & mem2reg.

2017-03-22 19:16:39 +00:00

PromoteMemToRegister.ll

[Debugify] Avoid printing unnecessary square braces, NFC

2018-05-24 23:00:22 +00:00

undef-order.ll

[Mem2Reg] Fix nondeterministic corner case

2018-11-30 19:20:02 +00:00

UndefValuesMerge.ll

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

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