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Hans Wennborg d5c2318adc SimplifyCFG: don't remove unreachable default switch destinations 
An unreachable default destination can be exploited by other optimizations and
allows for more efficient lowering. Both the SDag switch lowering and
LowerSwitch can exploit unreachable defaults.

Also make TurnSwitchRangeICmp handle switches with unreachable default.
This is kind of separate change, but it cannot be tested without the change
above, and I don't want to land the change above without this since that would
regress other tests.

Differential Revision: http://reviews.llvm.org/D6471

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227125 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-26 19:52:32 +00:00
..
ADCE [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
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 [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
CodeGenPrepare [GC] CodeGenPrep transform: simplify offsetable relocate 2015-01-14 23:27:07 +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
ConstProp Fix a bug around truncating vector in const prop. 2014-08-21 02:12:35 +00:00
CorrelatedValuePropagation LazyValueInfo: Actually re-visit partially solved block-values in solveBlockValue() 2014-11-25 17:23:05 +00:00
DeadArgElim IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
DeadStoreElimination IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
EarlyCSE Tweak EarlyCSE to recognize series of dead stores 2014-11-18 17:46:32 +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
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
GVN Refine memory dependence's notion of volatile semantics 2015-01-26 18:54:27 +00:00
IndVarSimplify Fix PR22222 2015-01-15 01:46:09 +00:00
Inline DebugInfo: Use distinct inlinedAt MDLocations to avoid separate inlined calls being coalesced 2015-01-21 22:57:29 +00:00
InstCombine [PM] Port instcombine to the new pass manager! 2015-01-24 04:19:17 +00:00
InstMerge Added 5 more tests related to sink store revision 224247 2014-12-17 08:12:59 +00:00
InstSimplify InstSimplify: Optimize away pointless comparisons 2014-12-20 03:04:38 +00:00
Internalize Use "weak alias" instead of "alias weak" 2014-07-30 22:51:54 +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 Fix crashes in IRCE caused by mismatched types 2015-01-22 08:29:18 +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 IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
LoadCombine Use AA in LoadCombine 2014-11-03 23:19:16 +00:00
LoopDeletion [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
LoopIdiom IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
LoopReroll Fix loop rerolling pass failure with non-consant loop lower bound 2014-01-03 17:20:01 +00:00
LoopRotate IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
LoopSimplify FileCheckize. NFC. 2014-09-12 17:55:16 +00:00
LoopStrengthReduce IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
LoopUnroll Use a smaller pragma unroll threshold to reduce test execution time. 2015-01-21 13:52:02 +00:00
LoopUnswitch [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
LoopVectorize Fixed a bug in masked load/store in reversed loop. 2015-01-22 08:20:06 +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 Allow call-slop optzn for destinations with a suitable dereferenceable attribute 2014-10-16 19:43:08 +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 [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
PruneEH [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
Reassociate Fix Reassociate handling of constant in presence of undef float 2015-01-16 03:00:58 +00:00
Reg2Mem [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
SampleProfile 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
ScalarRepl IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
SCCP SCCP: overdefined calls cannot become constant 2014-11-07 08:54:19 +00:00
SeparateConstOffsetFromGEP/NVPTX [SeparateConstOffsetFromGEP] Fixed a bug related to unsigned modulo 2014-10-25 18:34:03 +00:00
SimplifyCFG SimplifyCFG: don't remove unreachable default switch destinations 2015-01-26 19:52:32 +00:00
Sink Sink: Don't sink static allocas from the entry block 2014-03-21 15:51:51 +00:00
SLPVectorizer SLPVectorizer: fix wrong scheduling of atomic load/stores. 2015-01-26 09:07:04 +00:00
SROA [SROA] Apply a somewhat heavy and unpleasant hammer to fix PR22093, an 2015-01-05 04:17:53 +00:00
StripSymbols IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
StructurizeCFG StructurizeCFG: Use LoopInfo analysis for better loop detection 2014-12-03 04:28:32 +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 [SwitchLowering] Handle destinations on multiple phi instructions 2014-12-02 18:31:53 +00:00