Duncan Sands c48b55a33d TryToSimplifyUncondBranchFromEmptyBlock was checking that any common ...

predecessors of the two blocks it is attempting to merge supply the
same incoming values to any phi in the successor block.  This change
allows merging in the case where there is one or more incoming values
that are undef.  The undef values are rewritten to match the non-undef
value that flows from the other edge.  Patch by Mark Lacey.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186069 91177308-0d34-0410-b5e6-96231b3b80d8

2013-07-11 08:28:20 +00:00

..

SPARC

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X86

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2002-05-21-PHIElimination.ll

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2002-09-24-PHIAssertion.ll

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2003-03-07-DominateProblem.ll

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2003-08-05-InvokeCrash.ll

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2003-08-17-BranchFold.ll

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2003-08-17-BranchFoldOrdering.ll

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2003-08-17-FoldSwitch-dbg.ll

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2003-08-17-FoldSwitch.ll

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2004-12-10-SimplifyCFGCrash.ll

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2005-06-16-PHICrash.ll

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2005-08-01-PHIUpdateFail.ll

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2005-10-02-InvokeSimplify.ll

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2005-12-03-IncorrectPHIFold.ll

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2006-02-17-InfiniteUnroll.ll

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2006-06-12-InfLoop.ll

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2006-08-03-Crash.ll

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2006-10-19-UncondDiv.ll

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2006-12-08-Ptr-ICmp-Branch.ll

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2007-11-22-InvokeNoUnwind.ll

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2007-12-21-Crash.ll

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2008-01-02-hoist-fp-add.ll

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2008-05-16-PHIBlockMerge.ll

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2008-07-13-InfLoopMiscompile.ll

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2008-09-08-MultiplePred.ll

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2008-09-17-SpeculativeHoist.ll

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2008-10-03-SpeculativelyExecuteBeforePHI.ll

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2008-12-06-SingleEntryPhi.ll

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2008-12-16-DCECond.ll

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2009-01-18-PHIPropCrash.ll

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2009-01-19-UnconditionalTrappingConstantExpr.ll

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2009-05-12-externweak.ll

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2010-03-30-InvokeCrash.ll

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2011-03-08-UnreachableUse.ll

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2011-09-05-TrivialLPad.ll

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basictest.ll

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branch-cond-merge.ll

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branch-cond-prop.ll

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branch-fold-dbg.ll

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branch-fold-test.ll

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branch-fold.ll

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branch-phi-thread.ll

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BrUnwind.ll

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dbginfo.ll

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dce-cond-after-folding-terminator.ll

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DeadSetCC.ll

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duplicate-phis.ll

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EmptyBlockMerge.ll

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EqualPHIEdgeBlockMerge.ll

TryToSimplifyUncondBranchFromEmptyBlock was checking that any common

2013-07-11 08:28:20 +00:00

ForwardSwitchConditionToPHI.ll

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hoist-common-code.ll

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hoist-dbgvalue.ll

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HoistCode.ll

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indirectbr.ll

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invoke_unwind.ll

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invoke.ll

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iterative-simplify.ll

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lifetime.ll

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lit.local.cfg

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MagicPointer.ll

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multiple-phis.ll

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noreturn-call.ll

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phi-undef-loadstore.ll

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PhiBlockMerge2.ll

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PhiBlockMerge.ll

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PhiEliminate2.ll

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PhiEliminate3.ll

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PhiEliminate.ll

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PHINode.ll

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PhiNoEliminate.ll

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PR9946.ll

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PR16069.ll

Second part of pr16069

2013-06-04 14:11:59 +00:00

preserve-branchweights-partial.ll

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preserve-branchweights-switch-create.ll

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preserve-branchweights.ll

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return-merge.ll

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select-gep.ll

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sink-common-code.ll

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speculate-store.ll

SimplifyCFG: If convert single conditional stores

2013-04-29 21:28:24 +00:00

speculate-with-offset.ll

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SpeculativeExec.ll

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switch_create.ll

SimplifyCFG: Teach switch generation some patterns that instcombine forms.

2013-07-04 14:22:02 +00:00

switch_switch_fold.ll

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switch_thread.ll

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switch-masked-bits.ll

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switch-on-const-select.ll

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switch-simplify-crash.ll

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switch-to-icmp.ll

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trap-debugloc.ll

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trapping-load-unreachable.ll

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trivial-throw.ll

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two-entry-phi-return.ll

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UncondBranchToReturn.ll

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unreachable-blocks.ll

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UnreachableEliminate.ll

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volatile-phioper.ll

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