Dan Gohman 010ee2d955 When LSR is replacing an instruction, call ...

ScalarEvolution::deleteValueFromRecords on it before doing the
replaceAllUsesWith, because ScalarEvolution looks at the instruction's
users to find SCEV references to the instruction's SCEV object in its
internal maps.

Move all of LSR's loop-related state clearing after processing the loop
and before cleaning up dead PHI nodes. This eliminates all of LSR's SCEV
references just before the calls to ScalarEvolution::deleteValueFromRecords
so that when ScalarEvolution drops its own SCEV references, the reference
counts will reach zero and the SCEVs will be deleted immediately.

These changes fix some compiler aborts involving ScalarEvolution holding
onto and reusing SCEV objects for instructions that have been deleted.
No regression test unfortunately; because the symptoms were due to
dangling pointers, reduced testcases ended up being fairly arbitrary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51359 91177308-0d34-0410-b5e6-96231b3b80d8

2008-05-21 00:54:12 +00:00

..

ADCE.cpp

Remove ADCE's ability to delete loops. This ability is now implemented in a

2008-05-16 04:34:51 +00:00

BasicBlockPlacement.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

CodeGenPrepare.cpp

API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)

2008-05-16 19:29:10 +00:00

CondPropagate.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

ConstantProp.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

DCE.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

DeadStoreElimination.cpp

80 col / tabs fixes

2008-05-13 01:48:26 +00:00

GCSE.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

GVN.cpp

Teach GVN to not assert on vector comparisons

2008-05-18 19:49:05 +00:00

GVNPRE.cpp

API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)

2008-05-16 19:29:10 +00:00

IndVarSimplify.cpp

API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)

2008-05-16 19:29:10 +00:00

InstructionCombining.cpp

Port SelectionDAG's ComputeNumSignBits-using code to instcombine,

2008-05-20 21:01:12 +00:00

JumpThreading.cpp

Fix typo.

2008-05-20 07:26:45 +00:00

LICM.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

LoopDeletion.cpp

Clean ups for loop deletion based on Chris' feedback.

2008-05-16 04:32:45 +00:00

LoopIndexSplit.cpp

Do not erase induction variable increment if it is used outside the loop.

2008-05-19 22:23:55 +00:00

LoopRotation.cpp

Fix a bunch of 80col violations that arose from the Create API change. Tweak makefile targets to find these better.

2008-05-15 10:04:30 +00:00

LoopStrengthReduce.cpp

When LSR is replacing an instruction, call

2008-05-21 00:54:12 +00:00

LoopUnroll.cpp

Bill pointed out that system headers should be

2008-05-16 09:30:00 +00:00

LoopUnswitch.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

Makefile

…

MemCpyOptimizer.cpp

API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)

2008-05-16 19:29:10 +00:00

PredicateSimplifier.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

Reassociate.cpp

API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)

2008-05-16 19:29:10 +00:00

Reg2Mem.cpp

API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)

2008-05-16 19:29:10 +00:00

Scalar.cpp

C and Objective Caml bindings for mem2reg and reg2mem.

2008-03-20 17:16:03 +00:00

ScalarReplAggregates.cpp

API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)

2008-05-16 19:29:10 +00:00

SCCP.cpp

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

SimplifyCFGPass.cpp

rename SimplifyCFG.cpp -> SimplifyCFGPass.cpp

2008-05-14 20:38:44 +00:00

SimplifyLibCalls.cpp

Fix PR2341 - when the length is 4 use an i32 not

2008-05-19 09:27:24 +00:00

TailDuplication.cpp

Do not dup malloc, vector instructions, etc. Throttle the default theshold way down.

2008-05-16 07:55:50 +00:00

TailRecursionElimination.cpp

Fix a bunch of 80col violations that arose from the Create API change. Tweak makefile targets to find these better.

2008-05-15 10:04:30 +00:00