Chris Lattner 60d410d7bb fix two significant issues with FoldTwoEntryPHINode: ...

first, it can kick in on blocks whose conditions have been
folded to a constant, even though one of the edges will be
trivially folded.

second, it doesn't clean up the "if diamond" that it just 
eliminated away.  This is a problem because other simplifycfg
xforms kick in depending on the order of block visitation,
causing pointless work.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121762 91177308-0d34-0410-b5e6-96231b3b80d8

2010-12-14 08:01:53 +00:00

..

ADCE

…

ArgumentPromotion

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

BlockPlacement

…

BranchFolding

…

CodeExtractor

…

CodeGenPrepare

Add a test for CodeGenPrepare's ability to look through PHI nodes when performing

2010-11-19 22:34:53 +00:00

ConstantMerge

fix PR8144, a bug where constant merge would merge globals marked

2010-09-15 00:30:11 +00:00

ConstProp

Teach ConstantFoldInstruction() how to fold insertvalue and extractvalue.

2010-11-29 20:36:52 +00:00

CorrelatedValuePropagation

Update testcase since we're no longer doing the constant forwarding inline with correlated value propagation.

2010-10-29 21:18:23 +00:00

DeadArgElim

Preserve debug info attached with call instruction while eliminating dead argument.

2010-04-30 20:23:54 +00:00

DeadStoreElimination

Fix PR8728, a miscompilation I recently introduced. When optimizing

2010-12-06 01:48:06 +00:00

FunctionAttrs

Make ModRefBehavior a lattice. Use this to clean up AliasAnalysis

2010-11-10 01:02:18 +00:00

GlobalDCE

…

GlobalOpt

reapply r121100 with a tweak to constant fold ConstExprs with TargetData

2010-12-07 04:33:29 +00:00

GVN

Completely rework the datastructure GVN uses to represent the value number to leader mapping. Previously,

2010-11-18 18:32:40 +00:00

IndVarSimplify

Remove LoopIndexSplit pass. It is neither maintained nor used by anyone.

2010-10-07 23:29:37 +00:00

Inline

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

InstCombine

Generalize the and-icmp-select instcombine further by allowing selects of the form

2010-12-11 10:49:22 +00:00

Internalize

…

IPConstantProp

more test cleanup

2010-09-02 22:38:56 +00:00

JumpThreading

Implement jump threading of 'indirectbr' by keeping track of whether we're looking for ConstantInt*s or BlockAddress*s.

2010-12-06 23:36:56 +00:00

LCSSA

Avoid depending on LCSSA implicitly pulling in LoopSimplify.

2010-07-26 18:00:43 +00:00

LICM

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

LoopDeletion

…

LoopRotate

Teach loop rotate to hoist trivially invariant instructions

2010-09-06 01:10:22 +00:00

LoopSimplify

Fix LoopSimplify to notify ScalarEvolution when splitting a loop backedge

2010-09-04 02:42:48 +00:00

LoopStrengthReduce

Correct bogus module triple specifications.

2010-08-30 10:48:29 +00:00

LoopUnroll

Revert r113439, which relaxed the requirement that loops containing calls cannot be unrolled. After some discussion,

2010-09-09 20:02:23 +00:00

LoopUnswitch

Factor code for testing whether replacing one value with another

2010-11-18 19:59:41 +00:00

LowerAtomic

Add an atomic lowering pass

2010-08-03 16:19:16 +00:00

LowerInvoke

…

LowerSetJmp

…

LowerSwitch

…

Mem2Reg

Copy location info for current function argument from dbg.declare if respective store instruction does not have any location info.

2010-06-04 22:27:30 +00:00

MemCpyOpt

enhance memcpyopt to zap memcpy's that have the same src/dst.

2010-12-09 07:45:45 +00:00

MergeFunc

Arrays and vectors with different numbers of elements are not equivalent.

2010-07-16 06:31:12 +00:00

PartialSpecialize

Now using a variant of the existing inlining heuristics to decide whether to create a given specialization of a function in PartialSpecialization. If the total performance bonus across all callsites passing the same constant exceeds the specialization cost, we create the specialization.

2010-10-09 22:06:36 +00:00

PruneEH

fix some failures my callgraph dump format change broke.

2010-04-23 18:38:40 +00:00

Reassociate

fix a nice subtle reassociate bug which would only occur

2010-03-05 07:18:54 +00:00

ScalarRepl

Treat a call of function pointer like a load of the pointer when considering

2010-11-24 22:04:20 +00:00

SCCP

fix PR7876: If ipsccp decides that a function's address is taken

2010-08-12 22:25:23 +00:00

SimplifyCFG

fix two significant issues with FoldTwoEntryPHINode:

2010-12-14 08:01:53 +00:00

SimplifyLibCalls

Add a puts optimization that converts puts() to putchar('\n').

2010-11-30 06:19:18 +00:00

Sink

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

SRETPromotion

…

StripSymbols

DIGlobalVariable can be used to encode debug info for globals that are directly folded into a constant by FE.

2010-08-25 18:52:02 +00:00

TailCallElim

merge two tests.

2010-08-31 18:44:03 +00:00

TailDup

The output of opt -stats must be sent to stderr. Patch by NAKAMURA Takumi!

2010-09-01 18:32:56 +00:00