Eli Friedman 2adc5b6a17 PR9420; an instruction before an unreachable is guaranteed not to have any ... reachable uses, but there still might be uses in dead blocks. Use the standard solution of replacing all the uses with undef. This is a rare case because it's very sensitive to phase ordering in SimplifyCFG. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127299 91177308-0d34-0410-b5e6-96231b3b80d8		2011-03-09 00:48:33 +00:00
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2002-05-05-EmptyBlockMerge.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2002-05-21-PHIElimination.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2002-06-24-PHINode.ll	fix a bunch of spurious failures for people whose home directory	2009-09-11 17:02:12 +00:00
2002-09-24-PHIAssertion.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2003-03-07-DominateProblem.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2003-08-05-InvokeCrash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2003-08-05-MishandleInvoke.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2003-08-17-BranchFold.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2003-08-17-BranchFoldOrdering.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2003-08-17-FoldSwitch-dbg.ll	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
2003-08-17-FoldSwitch.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2004-12-10-SimplifyCFGCrash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2005-06-16-PHICrash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2005-08-01-PHIUpdateFail.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2005-08-03-PHIFactorCrash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2005-10-02-InvokeSimplify.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2005-12-03-IncorrectPHIFold.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2006-02-17-InfiniteUnroll.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2006-06-12-InfLoop.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2006-08-03-Crash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2006-10-19-UncondDiv.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2006-10-29-InvokeCrash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2006-12-08-Ptr-ICmp-Branch.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2007-11-22-InvokeNoUnwind.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2007-12-21-Crash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-01-02-hoist-fp-add.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-04-23-MergeMultipleResultRet.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-04-27-MultipleReturnCrash.ll	Correct bogus module triple specifications.	2010-08-30 10:48:29 +00:00
2008-05-16-PHIBlockMerge.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-07-13-InfLoopMiscompile.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-09-08-MultiplePred.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-09-17-SpeculativeHoist.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-10-03-SpeculativelyExecuteBeforePHI.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-12-06-SingleEntryPhi.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-12-16-DCECond.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2009-01-18-PHIPropCrash.ll	Optimize test more.	2009-11-10 21:02:18 +00:00
2009-01-19-UnconditionalTrappingConstantExpr.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2009-03-05-Speculative-Hoist-Dbg.ll	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
2009-05-12-externweak.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2009-06-15-InvokeCrash.ll	Floating-point add, sub, and mul are now spelled fadd, fsub, and fmul,	2010-03-02 01:11:08 +00:00
2010-03-30-InvokeCrash.ll	testcase for r99914, provided by baldrick!	2010-03-31 20:37:13 +00:00
2010-10-24-OnlyUnwindInEntry.ll	Fix PR8445: a block with no predecessors may be the entry block, in which case	2010-10-24 12:23:30 +00:00
2011-03-08-UnreachableUse.ll	PR9420; an instruction before an unreachable is guaranteed not to have any	2011-03-09 00:48:33 +00:00
basictest.ll	Re-apply r124518 with fix. Watch out for invalidated iterator.	2011-01-29 04:46:23 +00:00
branch_fold_dbg.ll	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
branch-branch-dbginfo.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
branch-cond-merge.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
branch-cond-prop.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
branch-fold-test.ll	Use opt -S instead of piping bitcode output through llvm-dis.	2009-09-08 22:34:10 +00:00
branch-fold.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
branch-phi-thread.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
BrUnwind.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
dbginfo.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
DeadSetCC.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
dg.exp
duplicate-phis.ll	fix two bogus tests that the asmparser now rejects.	2009-12-30 05:54:51 +00:00
EqualPHIEdgeBlockMerge.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
hoist-common-code.dbg.ll	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
hoist-common-code.ll	fix a bunch of spurious failures for people whose home directory	2009-09-11 17:02:12 +00:00
HoistCode.ll	fix a bunch of spurious failures for people whose home directory	2009-09-11 17:02:12 +00:00
indirectbr.ll	Teach SimplifyCFG to turn	2010-12-05 18:29:03 +00:00
invoke_unwind.ll	make these tests a bit less fragile	2010-12-13 05:10:30 +00:00
iterative-simplify.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
MagicPointer.ll	Re-apply r124518 with fix. Watch out for invalidated iterator.	2011-01-29 04:46:23 +00:00
noreturn-call.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
PhiBlockMerge2.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
PhiBlockMerge.ll	fix two significant issues with FoldTwoEntryPHINode:	2010-12-14 08:01:53 +00:00
PhiEliminate2.ll	fix a bunch of spurious failures for people whose home directory	2009-09-11 17:02:12 +00:00
PhiEliminate.ll	- Insert new instructions before DomBlock's terminator,	2010-12-14 08:46:09 +00:00
PhiNoEliminate.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
return-merge.ll	fix a bunch of spurious failures for people whose home directory	2009-09-11 17:02:12 +00:00
select-gep.ll	Revert "SimplifyCFG: GEPs with just one non-constant index are also cheap."	2011-02-25 10:33:33 +00:00
speculate-with-offset.ll	Factor out Instruction::isSafeToSpeculativelyExecute's code for	2010-11-11 21:23:25 +00:00
SpeculativeExec.ll	fix a bunch of spurious failures for people whose home directory	2009-09-11 17:02:12 +00:00
switch_create.ll	SimplifyCFG: Track the number of used icmps when turning a icmp chain into a switch. If we used only one icmp, don't turn it into a switch.	2011-02-07 22:37:28 +00:00
switch_formation.dbg.ll	SimplifyCFG: Track the number of used icmps when turning a icmp chain into a switch. If we used only one icmp, don't turn it into a switch.	2011-02-07 22:37:28 +00:00
switch_switch_fold_dbginfo.ll	Use opt -S instead of piping bitcode output through llvm-dis.	2009-09-08 22:34:10 +00:00
switch_switch_fold.ll	Use opt -S instead of piping bitcode output through llvm-dis.	2009-09-08 22:34:10 +00:00
switch_thread.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
switch-on-const-select.ll	Teach SimplifyCFG that (switch (select cond, X, Y)) is better expressed as a branch.	2011-02-28 09:44:07 +00:00
switch-simplify-crash.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
switch-to-icmp.ll	SimplifyCFG: Track the number of used icmps when turning a icmp chain into a switch. If we used only one icmp, don't turn it into a switch.	2011-02-07 22:37:28 +00:00
trapping-load-unreachable.ll	Test case for r105914.	2010-06-13 16:16:54 +00:00
two-entry-phi-return.dbg.ll	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
two-entry-phi-return.ll	fix a bunch of spurious failures for people whose home directory	2009-09-11 17:02:12 +00:00
UncondBranchToReturn.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
UnreachableEliminate.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00