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llvm-project/llvm/test/Transforms
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Andrea Di Biagio 30d471f6aa [InstCombine] Fix regression introduced at r227197. 
This patch fixes a problem I accidentally introduced in an instruction combine
on select instructions added at r227197. That revision taught the instruction
combiner how to fold a cttz/ctlz followed by a icmp plus select into a single
cttz/ctlz with flag 'is_zero_undef' cleared.

However, the new rule added at r227197 would have produced wrong results in the
case where a cttz/ctlz with flag 'is_zero_undef' cleared was follwed by a
zero-extend or truncate. In that case, the folded instruction would have
been inserted in a wrong location thus leaving the CFG in an inconsistent
state.

This patch fixes the problem and add two reproducible test cases to
existing test 'InstCombine/select-cmp-cttz-ctlz.ll'.

llvm-svn: 229124
 		2015-02-13 16:33:34 +00:00
..
ADCE
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AddDiscriminators IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
AlignmentFromAssumptions [AlignmentFromAssumptions] Don't crash just because the target is 32-bit 2014-09-11 08:40:17 +00:00
ArgumentPromotion IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
AtomicExpand/ARM Use target-dependent emitLeading/TrailingFence instead of the target-independent insertLeading/TrailingFence (in AtomicExpandPass) 2014-09-03 21:01:03 +00:00
BBVectorize This patch teaches IndVarSimplify to add nuw and nsw to certain kinds 2015-01-06 19:02:56 +00:00
BranchFolding Delete -std-compile-opts. 2014-10-16 20:00:02 +00:00
CodeExtractor
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CodeGenPrepare [GC] CodeGenPrep transform: simplify offsetable relocate 2015-01-14 23:27:07 +00:00
ConstProp Fix a bug around truncating vector in const prop. 2014-08-21 02:12:35 +00:00
ConstantHoisting [ConstantHoisting][X86] Improve the cost model for small constants with large types (i64 and above). 2014-06-10 00:32:29 +00:00
ConstantMerge Remove the linker_private and linker_private_weak linkages. 2014-03-13 23:18:37 +00:00
CorrelatedValuePropagation LazyValueInfo: Actually re-visit partially solved block-values in solveBlockValue() 2014-11-25 17:23:05 +00:00
DeadArgElim DeadArgElim: aggregate Return assessment properly. 2015-02-11 23:13:11 +00:00
DeadStoreElimination IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
EarlyCSE EarlyCSE: Add check lines for test added in r228760 2015-02-10 23:11:02 +00:00
FunctionAttrs Normally an 'optnone' function goes through fast-isel, which does not 2014-11-03 18:19:26 +00:00
GCOVProfiling IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
GVN Allow PRE to insert no-cost phi nodes 2015-02-03 20:37:08 +00:00
GlobalDCE Change the .ll syntax for comdats and add a syntactic sugar. 2015-01-06 22:55:16 +00:00
GlobalOpt IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
IPConstantProp No need for those tests to go thru llvm-as and/or llvm-dis. 2014-05-27 22:03:28 +00:00
IRCE Teach IRCE to look at branch weights when recognizing range checks 2015-01-27 21:38:12 +00:00
IndVarSimplify Fix PR22222 2015-01-15 01:46:09 +00:00
Inline Fix a crash in the assumption cache when inlining indirect function calls 2015-02-12 21:04:22 +00:00
InstCombine [InstCombine] Fix regression introduced at r227197. 2015-02-13 16:33:34 +00:00
InstMerge Added 5 more tests related to sink store revision 224247 2014-12-17 08:12:59 +00:00
InstSimplify Fold fcmp in cases where value is provably non-negative. By Arch Robison. 2015-01-28 08:03:58 +00:00
Internalize Use "weak alias" instead of "alias weak" 2014-07-30 22:51:54 +00:00
JumpThreading ValueTracking: ComputeNumSignBits should tolerate misshapen phi nodes 2015-01-04 07:06:53 +00:00
LCSSA [LCSSA] Handle PHI insertion in disjoint loops 2014-12-22 22:35:46 +00:00
LICM Teach isDereferenceablePointer() to look through bitcast constant expressions. 2015-02-05 09:15:37 +00:00
LoadCombine Use AA in LoadCombine 2014-11-03 23:19:16 +00:00
LoopDeletion
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LoopIdiom IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
LoopReroll [LoopRerolling] Be more forgiving with instruction order. 2015-02-12 15:54:14 +00:00
LoopRotate LoopRotate: Don't walk the uses of a Constant 2015-01-27 06:21:43 +00:00
LoopSimplify Teach SplitBlockPredecessors how to handle landingpad blocks. 2015-01-28 23:06:47 +00:00
LoopStrengthReduce Reverting VLD1/VST1 base-updating/post-incrementing combining 2015-02-04 10:11:59 +00:00
LoopUnroll [unroll] Concede defeat and disable the unroll analyzer for now. 2015-02-13 05:31:46 +00:00
LoopUnswitch
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LoopVectorize Check interleaving without relying on debug output. 2015-02-13 02:13:57 +00:00
LowerAtomic IR: add "cmpxchg weak" variant to support permitted failure. 2014-06-13 14:24:07 +00:00
LowerExpectIntrinsic [PM] Port LowerExpectIntrinsic to the new pass manager. 2015-01-24 11:13:02 +00:00
LowerInvoke Remove LowerInvoke's obsolete "-enable-correct-eh-support" option 2014-03-20 19:54:47 +00:00
LowerSwitch LowerSwitch: replace unreachable default with popular case destination 2015-01-23 20:43:51 +00:00
Mem2Reg IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
MemCpyOpt ValueTracking: Make isBytewiseValue simpler and more powerful at the same time. 2015-02-07 19:29:02 +00:00
MergeFunc IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
MetaRenamer Use "weak alias" instead of "alias weak" 2014-07-30 22:51:54 +00:00
ObjCARC IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
PartiallyInlineLibCalls PartiallyInlineLibCalls: Check sqrt result type before transforming it. 2014-08-01 23:21:21 +00:00
PhaseOrdering
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PlaceSafepoints PlaceSafepoints: modernize gc.result.* -> gc.result 2015-02-09 23:00:40 +00:00
PruneEH Fix invalid LLVM IR in PruneEH tests 2015-02-11 02:06:47 +00:00
Reassociate Reassociate: cannot negate a INT_MIN value 2015-02-11 19:54:44 +00:00
Reg2Mem
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SCCP SCCP: overdefined calls cannot become constant 2014-11-07 08:54:19 +00:00
SLPVectorizer [slp] Fix a nasty bug in the SLP vectorizer that Joerg pointed out. 2015-02-12 02:30:56 +00:00
SROA [SROA] Apply a somewhat heavy and unpleasant hammer to fix PR22093, an 2015-01-05 04:17:53 +00:00
SampleProfile IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
ScalarRepl IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
Scalarizer IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
SeparateConstOffsetFromGEP/NVPTX [SeparateConstOffsetFromGEP] Fixed a bug related to unsigned modulo 2014-10-25 18:34:03 +00:00
SimplifyCFG [CodeGenPrepare] Removed duplicate logic. SimplifyCFG already knows how to speculate calls to cttz/ctlz. 2015-02-13 14:15:48 +00:00
Sink Sink: Don't sink static allocas from the entry block 2014-03-21 15:51:51 +00:00
StraightLineStrengthReduce Add straight-line strength reduction to LLVM 2015-02-03 19:37:06 +00:00
StripSymbols IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
StructurizeCFG StructurizeCFG: Use a reverse post-order traversal 2015-02-04 20:49:44 +00:00
TailCallElim Fix tail recursion elimination 2014-11-19 13:32:51 +00:00
TailDup Reduce verbiage of lit.local.cfg files 2014-06-09 22:42:55 +00:00
Util Correctly combine alias.scope metadata by a union instead of intersecting 2015-02-08 17:07:14 +00:00