Frits van Bommel 5649ba70fb Add a parameter to ConstantFoldTerminator() that callers can use to ask it to also clean up the condition of any conditional terminator it folds to be unconditional, if that turns the condition into dead code. This just means it calls RecursivelyDeleteTriviallyDeadInstructions() in strategic spots. It defaults to the old behavior. ... I also changed -simplifycfg, -jump-threading and -codegenprepare to use this to produce slightly better code without any extra cleanup passes (AFAICT this was the only place in -simplifycfg where now-dead conditions of replaced terminators weren't being cleaned up). The only other user of this function is -sccp, but I didn't read that thoroughly enough to figure out whether it might be holding pointers to instructions that could be deleted by this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131855 91177308-0d34-0410-b5e6-96231b3b80d8		2011-05-22 16:24:18 +00:00
..
2002-05-05-EmptyBlockMerge.ll
2002-05-21-PHIElimination.ll
2002-06-24-PHINode.ll
2002-09-24-PHIAssertion.ll
2003-03-07-DominateProblem.ll
2003-08-05-InvokeCrash.ll
2003-08-05-MishandleInvoke.ll
2003-08-17-BranchFold.ll
2003-08-17-BranchFoldOrdering.ll
2003-08-17-FoldSwitch-dbg.ll
2003-08-17-FoldSwitch.ll
2004-12-10-SimplifyCFGCrash.ll
2005-06-16-PHICrash.ll
2005-08-01-PHIUpdateFail.ll
2005-08-03-PHIFactorCrash.ll
2005-10-02-InvokeSimplify.ll
2005-12-03-IncorrectPHIFold.ll
2006-02-17-InfiniteUnroll.ll
2006-06-12-InfLoop.ll
2006-08-03-Crash.ll	Improve the bail-out predicate to really only kick in when phi	2011-04-26 17:41:02 +00:00
2006-10-19-UncondDiv.ll
2006-10-29-InvokeCrash.ll
2006-12-08-Ptr-ICmp-Branch.ll
2007-11-22-InvokeNoUnwind.ll
2007-12-21-Crash.ll
2008-01-02-hoist-fp-add.ll
2008-04-23-MergeMultipleResultRet.ll
2008-04-27-MultipleReturnCrash.ll
2008-05-16-PHIBlockMerge.ll	Fix mistyped CHECK lines.	2011-03-09 22:07:31 +00:00
2008-07-13-InfLoopMiscompile.ll
2008-09-08-MultiplePred.ll
2008-09-17-SpeculativeHoist.ll
2008-10-03-SpeculativelyExecuteBeforePHI.ll
2008-12-06-SingleEntryPhi.ll
2008-12-16-DCECond.ll
2009-01-18-PHIPropCrash.ll
2009-01-19-UnconditionalTrappingConstantExpr.ll
2009-03-05-Speculative-Hoist-Dbg.ll
2009-05-12-externweak.ll
2009-06-15-InvokeCrash.ll
2010-03-30-InvokeCrash.ll
2010-10-24-OnlyUnwindInEntry.ll
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
branch-branch-dbginfo.ll
branch-cond-merge.ll
branch-cond-prop.ll
branch-fold-dbg.ll	Do not let debug info interfer with branch folding.	2011-04-07 23:11:25 +00:00
branch-fold-test.ll
branch-fold.ll
branch-phi-thread.ll
BrUnwind.ll
dbginfo.ll
dce-cond-after-folding-terminator.ll	Add a parameter to ConstantFoldTerminator() that callers can use to ask it to also clean up the condition of any conditional terminator it folds to be unconditional, if that turns the condition into dead code. This just means it calls RecursivelyDeleteTriviallyDeadInstructions() in strategic spots. It defaults to the old behavior.	2011-05-22 16:24:18 +00:00
DeadSetCC.ll
dg.exp
duplicate-phis.ll
EqualPHIEdgeBlockMerge.ll
hoist-common-code.dbg.ll
hoist-common-code.ll
hoist-dbgvalue.ll	While hoisting common code from if/else, hoist debug info intrinsics if they match.	2011-04-07 17:27:36 +00:00
HoistCode.ll
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
MagicPointer.ll	Re-apply r124518 with fix. Watch out for invalidated iterator.	2011-01-29 04:46:23 +00:00
noreturn-call.ll
PhiBlockMerge2.ll
PhiBlockMerge.ll	SimplifyCFG: Add CostRemaining parameter to DominatesMergePoint	2011-04-29 18:47:31 +00:00
PhiEliminate2.ll	SimplifyCFG: Add Trunc, ZExt and SExt to the list of cheap instructions for phi node folding	2011-04-29 18:47:25 +00:00
PhiEliminate3.ll	SimplifyCFG: Expose phi node folding cost threshold as command line parameter	2011-04-29 18:47:38 +00:00
PhiEliminate.ll	- Insert new instructions before DomBlock's terminator,	2010-12-14 08:46:09 +00:00
PhiNoEliminate.ll
PR9946.ll	Add test for PR9946.	2011-05-19 02:35:26 +00:00
return-merge.ll
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
SpeculativeExec.ll
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
switch_switch_fold.ll
switch_thread.ll
switch-masked-bits.ll	SimplifyCFG: Use ComputeMaskedBits to prune dead cases from switch instructions.	2011-05-14 15:57:25 +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
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
trap-debugloc.ll	Simplify cfg inserts a call to trap when unreachable code is detected. Assign DebugLoc to this new trap instruction.	2011-04-27 17:59:27 +00:00
trapping-load-unreachable.ll
two-entry-phi-return.dbg.ll
two-entry-phi-return.ll
UncondBranchToReturn.ll
UnreachableEliminate.ll	PR9450: Make switch optimization in SimplifyCFG not dependent on the ordering	2011-03-15 02:23:35 +00:00