David Majnemer 16e21309bf [SimplifyCFG] Do not blindly remove unreachable blocks ...

DeleteDeadBlock was called indiscriminately, leading to cleanuprets with
undef cleanuppad references.

Instead, try to drain the BB of most of it's instructions if it is
unreachable.  We can then remove the BB if it solely consists of a
terminator (and maybe some phis).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261731 91177308-0d34-0410-b5e6-96231b3b80d8

2016-02-24 10:02:16 +00:00

..

AArch64

[AArch64] add overrides for isCheapToSpeculateCttz() and isCheapToSpeculateCtlz()

2015-11-10 18:11:37 +00:00

AMDGPU

AMDGPU: Fix some places missed in rename

2015-06-19 17:39:03 +00:00

ARM

[ARM] add overrides for isCheapToSpeculateCttz() and isCheapToSpeculateCtlz()

2015-11-10 19:24:31 +00:00

Mips

[MIPS] add overrides for isCheapToSpeculateCttz() and isCheapToSpeculateCtlz()

2015-11-11 17:24:56 +00:00

PowerPC

[CodeGenPrepare] Removed duplicate logic. SimplifyCFG already knows how to speculate calls to cttz/ctlz.

2015-02-13 14:15:48 +00:00

SPARC

Reduce verbiage of lit.local.cfg files

2014-06-09 22:42:55 +00:00

X86

[SimplifyCFG] limit recursion depth when speculating instructions (PR26308)

2016-01-27 19:22:45 +00:00

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

Move the personality function from LandingPadInst to Function

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

2003-08-17-BranchFold.ll

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2003-08-17-BranchFoldOrdering.ll

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2003-08-17-FoldSwitch-dbg.ll

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

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

2003-08-17-FoldSwitch.ll

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2004-12-10-SimplifyCFGCrash.ll

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2005-06-16-PHICrash.ll

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

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

2005-08-01-PHIUpdateFail.ll

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

2015-02-27 19:29:02 +00:00

2005-10-02-InvokeSimplify.ll

Move the personality function from LandingPadInst to Function

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

2005-12-03-IncorrectPHIFold.ll

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

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

2006-02-17-InfiniteUnroll.ll

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2006-06-12-InfLoop.ll

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2006-08-03-Crash.ll

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

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

2006-10-19-UncondDiv.ll

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

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

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

2007-11-22-InvokeNoUnwind.ll

Move the personality function from LandingPadInst to Function

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

2007-12-21-Crash.ll

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

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

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

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

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

2008-05-16-PHIBlockMerge.ll

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2008-07-13-InfLoopMiscompile.ll

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

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

2008-09-08-MultiplePred.ll

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

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

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

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

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

2009-01-18-PHIPropCrash.ll

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2009-01-19-UnconditionalTrappingConstantExpr.ll

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

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

2009-05-12-externweak.ll

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

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

2010-03-30-InvokeCrash.ll

Move the personality function from LandingPadInst to Function

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

2011-03-08-UnreachableUse.ll

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2011-09-05-TrivialLPad.ll

Move the personality function from LandingPadInst to Function

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

assume.ll

Add @llvm.assume, lowering, and some basic properties

2014-07-25 21:13:35 +00:00

attr-convergent.ll

[SimplifyCFG] Don't fold conditional branches that contain calls to convergent functions.

2016-02-12 21:01:36 +00:00

attr-noduplicate.ll

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

2015-02-27 19:29:02 +00:00

basictest.ll

DI: Require subprogram definitions to be distinct

2015-08-28 20:26:49 +00:00

branch-cond-merge.ll

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branch-cond-prop.ll

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branch-fold-dbg.ll

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

branch-fold-test.ll

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branch-fold-threshold.ll

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

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

branch-fold.ll

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branch-phi-thread.ll

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

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

BrUnwind.ll

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bug-25299.ll

[SimplifyCFG] Extend SimplifyResume to handle phi of trivial landing pad.

2016-01-10 05:48:01 +00:00

clamp.ll

[SimplifyCFG] Add test for r229099

2015-02-13 11:08:40 +00:00

common-dest-folding.ll

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

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

CoveredLookupTable.ll

Teach simplify-cfg how to correctly create covered lookup tables for switches on iN with N >= 3.

2013-10-20 07:04:37 +00:00

dbginfo.ll

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

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

dce-cond-after-folding-terminator.ll

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

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

DeadSetCC.ll

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duplicate-landingpad.ll

Move the personality function from LandingPadInst to Function

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

duplicate-phis.ll

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empty-catchpad.ll

[WinEH] Simplify unreachable catchpads

2016-01-05 02:37:41 +00:00

empty-cleanuppad.ll

[IR] Remove terminatepad

2015-12-14 18:34:23 +00:00

EmptyBlockMerge.ll

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

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

EqualPHIEdgeBlockMerge.ll

TryToSimplifyUncondBranchFromEmptyBlock was checking that any common

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

extract-cost.ll

Add ExtractValue instruction to SimplifyCFG's ComputeSpeculationCost

2014-05-09 17:02:46 +00:00

ForwardSwitchConditionToPHI.ll

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hoist-common-code.ll

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

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

hoist-dbgvalue.ll

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

hoist-with-range.ll

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

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

HoistCode.ll

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implied-cond.ll

[SimplifyCFG] Constant fold a branch implied by it's incoming edge

2015-10-29 03:11:49 +00:00

indirectbr.ll

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

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

InfLoop.ll

[SimplifyCFG] Fix for "endless" loop after dead code removal (Alternative to

2016-02-03 23:54:25 +00:00

invoke_unwind.ll

[SimplifyCFG] Extend SimplifyResume to handle phi of trivial landing pad.

2016-01-10 05:48:01 +00:00

invoke.ll

Move the personality function from LandingPadInst to Function

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

iterative-simplify.ll

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

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

lifetime.ll

SimplifyCFG: Avoid miscompilations due to removed lifetime intrinsics.

2014-07-30 21:04:00 +00:00

MagicPointer.ll

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

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

merge-cleanuppads.ll

[SimplifyCFG] Merge together cleanuppads

2016-02-20 01:07:45 +00:00

merge-cond-stores-2.ll

Tweak unnamed label syntax in textual IR for easier matching in tests.

2016-01-27 21:53:08 +00:00

merge-cond-stores.ll

Revert "Don't create unnecessary PHIs"

2015-12-14 22:36:57 +00:00

multiple-phis.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

[asan] Disabling speculative loads under asan. Patch by Mike Aizatsky

2015-10-14 00:21:05 +00:00

no_speculative_loads_with_tsan.ll

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

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

noreturn-call.ll

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phi-undef-loadstore.ll

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

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

PhiBlockMerge2.ll

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PhiBlockMerge.ll

[SimplifyCFG] Swap to using TargetTransformInfo for cost

2015-02-11 12:15:41 +00:00

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

PR17073.ll

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

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

PR25267.ll

[SimplifyCFG] Don't use-after-free an SSA value

2015-10-21 18:22:24 +00:00

preserve-branchweights-partial.ll

IR: Make metadata typeless in assembly

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

preserve-branchweights-switch-create.ll

IR: Make metadata typeless in assembly

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

preserve-branchweights.ll

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

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

preserve-load-metadata-2.ll

Preserve load alignment and dereferenceable metadata during some transformations

2015-11-02 17:53:51 +00:00

preserve-load-metadata-3.ll

Preserve load alignment and dereferenceable metadata during some transformations

2015-11-02 17:53:51 +00:00

preserve-load-metadata.ll

Preserve load alignment and dereferenceable metadata during some transformations

2015-11-02 17:53:51 +00:00

preserve-make-implicit-on-switch-to-br.ll

[ConstantFoldTerminator] Preserve make.implicit metadata when converting SwitchInst to BranchInst

2015-08-07 19:30:12 +00:00

return-merge.ll

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seh-nounwind.ll

Move the personality function from LandingPadInst to Function

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

select-gep.ll

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

2015-02-27 19:29:02 +00:00

sink-common-code.ll

[SimplifyCFG] Revise common code sinking

2014-12-23 08:26:55 +00:00

speculate-math.ll

Revert "Revert "[SimplifyCFG] allow speculation of exactly one expensive instruction (PR24818)""

2016-01-27 02:59:41 +00:00

speculate-store.ll

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

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

speculate-vector-ops.ll

Make bitcast, extractelement, and insertelement considered cheap for speculation.

2014-05-30 18:34:43 +00:00

speculate-with-offset.ll

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

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

SpeculativeExec.ll

Revert "Revert "Strip metadata when speculatively hoisting instructions (r252604)"

2015-11-18 14:50:18 +00:00

statepoint-invoke-unwind.ll

[gc.statepoint] Change gc.statepoint intrinsic's return type to token type instead of i32 type

2015-12-26 07:54:32 +00:00

switch_create.ll

[SimplifyCFG] Don't mistake icmp of and for a tree of comparisons

2016-01-27 02:43:28 +00:00

switch_switch_fold.ll

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switch_thread.ll

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switch-dead-default.ll

[SimplifyCFG] Use known bits to eliminate dead switch defaults

2015-09-10 17:44:47 +00:00

switch-masked-bits.ll

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

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

switch-on-const-select.ll

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

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

switch-range-to-icmp.ll

SimplifyCFG: don't remove unreachable default switch destinations

2015-01-26 19:52:32 +00:00

switch-simplify-crash.ll

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switch-to-br.ll

Add some tests for SimplifyCFG's ConstantFoldTerminator(). NFC.

2014-12-04 22:19:25 +00:00

switch-to-icmp.ll

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

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

switch-to-select-multiple-edge-per-block-phi.ll

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

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

switch-to-select-two-case.ll

SimplifyCFG: don't remove unreachable default switch destinations

2015-01-26 19:52:32 +00:00

trap-debugloc.ll

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

trapping-load-unreachable.ll

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

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

two-entry-phi-return.ll

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UncondBranchToReturn.ll

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unreachable-blocks.ll

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

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

unreachable-cleanuppad.ll

[SimplifyCFG] Do not blindly remove unreachable blocks

2016-02-24 10:02:16 +00:00

UnreachableEliminate.ll

Move the personality function from LandingPadInst to Function

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

volatile-phioper.ll

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

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

wineh-unreachable.ll

[SimplifyCFG] Further improve our ability to remove redundant catchpads

2016-01-05 07:42:17 +00:00