Benjamin Kramer 1e21db6e83 SimplifyCFG: Enhance the "remove CFG edge that leads to null pointer dereference" optimization to also handle instructions with multiple uses. ... We conservatively only check the first use to avoid walking long use chains. This catches the common case of having both a load and a store to a pointer supplied by a PHI node. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165232 91177308-0d34-0410-b5e6-96231b3b80d8		2012-10-04 16:11:49 +00:00
..
2002-05-05-EmptyBlockMerge.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +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
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	Update tests to new EH model. Add landingpad instructions to landing pads.	2011-08-29 20:39:23 +00:00
2003-08-17-BranchFold.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
2003-08-17-BranchFoldOrdering.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +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
2005-10-02-InvokeSimplify.ll	Update tests to new EH model. Add landingpad instructions to landing pads.	2011-08-29 20:39:23 +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	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	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	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2008-05-16-PHIBlockMerge.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2008-07-13-InfLoopMiscompile.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +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	Fix SpeculativelyExecuteBB to either speculate all or none of the phis	2012-01-05 23:58:56 +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
2010-03-30-InvokeCrash.ll	Try to eliminate the use of the 'unwind' instruction.	2011-09-02 22:41:11 +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
2011-09-05-TrivialLPad.ll	Delete trivial landing pads that just continue unwinding the caught	2011-09-05 12:57:57 +00:00
basictest.ll	Re-apply r124518 with fix. Watch out for invalidated iterator.	2011-01-29 04:46:23 +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-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	Remove dyn_cast + dereference pattern by replacing it with a cast and changing	2012-06-24 10:15:42 +00:00
branch-phi-thread.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
BrUnwind.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +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
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	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
duplicate-phis.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +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
ForwardSwitchConditionToPHI.ll	Fix PR10103: Less code for enum type translation.	2011-06-18 10:28:47 +00:00
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	If the block that we're threading through is jumped to by an indirect branch,	2011-06-04 09:42:04 +00:00
invoke_unwind.ll	Replace more uses of 'unwind' in the tests with calls to landingpad and	2011-09-19 22:11:35 +00:00
invoke.ll	fix PR13339 (remove the predecessor from the unwind BB when removing an invoke)	2012-07-16 22:49:40 +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
lifetime.ll	Add r134057 back, but splice the predecessor after the successors phi	2011-06-30 20:14:24 +00:00
lit.local.cfg	Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.	2012-02-16 06:28:33 +00:00
MagicPointer.ll	Re-apply r124518 with fix. Watch out for invalidated iterator.	2011-01-29 04:46:23 +00:00
multiple-phis.ll	Fix SpeculativelyExecuteBB to either speculate all or none of the phis	2012-01-05 23:58:56 +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
phi-undef-loadstore.ll	SimplifyCFG: Enhance the "remove CFG edge that leads to null pointer dereference" optimization to also handle instructions with multiple uses.	2012-10-04 16:11:49 +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	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	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
PR9946.ll	Add test for PR9946.	2011-05-19 02:35:26 +00:00
preserve-branchweights-partial.ll	Remove an incorrect assert during branch weight propagation.	2012-09-08 00:07:26 +00:00
preserve-branchweights-switch-create.ll	PGO: preserve branch-weight metadata when merging two switches where	2012-09-14 17:29:56 +00:00
preserve-branchweights.ll	PGO: preserve branch-weight metadata when simplifying Switch to a sub, an icmp	2012-09-18 00:47:33 +00:00
return-merge.ll
select-gep.ll	Fix SpeculativelyExecuteBB to either speculate all or none of the phis	2012-01-05 23:58:56 +00:00
sink-common-code.ll	SimplifyCFG: sink common codes from IF, ELSE blocks down to END block.	2012-09-20 22:37:36 +00:00
speculate-with-offset.ll	Factor out Instruction::isSafeToSpeculativelyExecute's code for	2010-11-11 21:23:25 +00:00
SpeculativeExec.ll	Revert r56315. When the instruction to speculate is a load, this	2012-01-05 22:54:35 +00:00
switch_create.ll	Build lookup tables for switches (PR884)	2012-09-06 09:43:28 +00:00
switch_switch_fold.ll
switch_thread.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
switch_to_lookup_table.ll	SimplifyCFG: Don't crash when forming a switch bitmap with an undef default value.	2012-10-01 11:31:48 +00:00
switch-masked-bits.ll	Fix SpeculativelyExecuteBB to either speculate all or none of the phis	2012-01-05 23:58:56 +00:00
switch-on-const-select.ll	Fix SpeculativelyExecuteBB to either speculate all or none of the phis	2012-01-05 23:58:56 +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
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	Update SimplifyCFG for atomic operations.	2011-08-15 23:59:28 +00:00
two-entry-phi-return.ll
UncondBranchToReturn.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
unreachable-blocks.ll	Make Value::isDereferenceablePointer() handle unreachable code blocks. (This	2012-01-23 00:05:17 +00:00
UnreachableEliminate.ll	PR9450: Make switch optimization in SimplifyCFG not dependent on the ordering	2011-03-15 02:23:35 +00:00