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llvm-6502/test/Transforms
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Erik Eckstein 6cfbf12d77 reinstate r222872: Peephole optimization in switch table lookup: reuse the guarding table comparison if possible. 
Fixed missing dominance check.
Original commit message:

This optimization tries to reuse the generated compare instruction, if there is a comparison against the default value after the switch.
Example:
   if (idx < tablesize)
      r = table[idx]; // table does not contain default_value
   else
      r = default_value;
   if (r != default_value)
      ...
Is optimized to:
   cond = idx < tablesize;
   if (cond)
      r = table[idx];
   else
      r = default_value;
   if (cond)
      ...
Jump threading will then eliminate the second if(cond).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222891 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-27 15:13:14 +00:00
..
ADCE
AddDiscriminators Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
AlignmentFromAssumptions [AlignmentFromAssumptions] Don't crash just because the target is 32-bit 2014-09-11 08:40:17 +00:00
ArgumentPromotion Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +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
BranchFolding Delete -std-compile-opts. 2014-10-16 20:00:02 +00:00
CodeExtractor
CodeGenPrepare [CodeGenPrepare][AArch64] Fix a TLI legality check on iPTR to use a lowered instead. 2014-11-12 22:16:55 +00:00
ConstantHoisting
ConstantMerge
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 DebugInfo+DeadArgElimination: Ensure llvm::Function*s from debug info are updated even when DAE removes both varargs and non-varargs arguments on the same function. 2014-10-07 15:10:23 +00:00
DeadStoreElimination [DSE] Remove no-data-layout-only type-based overlap checking 2014-10-17 11:56:00 +00:00
DebugIR Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +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 Relax the gcov version.ll test to check '.' instead of '\*' 2014-11-13 23:07:55 +00:00
GlobalDCE GlobalDCE: Don't drop any COMDAT members 2014-10-07 07:07:19 +00:00
GlobalOpt GlobalOpt: Don't drop unused memberes of a Comdat 2014-10-08 07:23:31 +00:00
GVN Revert r222039 because of bot failure. 2014-11-19 00:13:26 +00:00
IndVarSimplify IndVarSimplify: Allow LFTR to fire more often 2014-11-18 02:20:58 +00:00
Inline Revert "Transforms: reapply SVN r219899" 2014-11-04 02:02:14 +00:00
InstCombine Use FileCheck instead of grep. Change by Ankur Garg. 2014-11-27 11:22:49 +00:00
InstMerge Use Alias Analysis to hoist 2 loads from diamond to the common predecessor basic block. 2014-11-02 08:03:05 +00:00
InstSimplify InstSimplify: Restore optimizations lost in r210006 2014-11-27 06:32:46 +00:00
Internalize
IPConstantProp
JumpThreading LazyValueInfo: Actually re-visit partially solved block-values in solveBlockValue() 2014-11-25 17:23:05 +00:00
LCSSA
LICM AliasSetTracker: UnknownInsts should contribute to the refcount 2014-11-19 09:41:05 +00:00
LoadCombine Use AA in LoadCombine 2014-11-03 23:19:16 +00:00
LoopDeletion
LoopIdiom Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
LoopReroll
LoopRotate llvm/test/Transforms/LoopRotate/nosimplifylatch.ll: Fix possibly mis-repeatedly-pasted test. 2014-10-29 23:05:12 +00:00
LoopSimplify FileCheckize. NFC. 2014-09-12 17:55:16 +00:00
LoopStrengthReduce Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
LoopUnroll Fix a trip-count overflow issue in LoopUnroll. 2014-11-20 20:19:55 +00:00
LoopUnswitch
LoopVectorize Bug 21610: Canonicalize min/max fcmp selects to use ordered comparisons 2014-11-24 23:15:18 +00:00
LowerAtomic
LowerExpectIntrinsic
LowerInvoke
LowerSwitch
Mem2Reg Delete -std-compile-opts. 2014-10-16 20:00:02 +00:00
MemCpyOpt Allow call-slop optzn for destinations with a suitable dereferenceable attribute 2014-10-16 19:43:08 +00:00
MergeFunc Fix crash when looking up the addrspace of GEPs with vector types 2014-09-02 18:47:54 +00:00
MetaRenamer
ObjCARC Add back r222061 with a fix. 2014-11-17 02:28:27 +00:00
PartiallyInlineLibCalls
PhaseOrdering
PruneEH
Reassociate Revert "[Reassociate] As the expression tree is rewritten make sure the operands are" 2014-11-19 23:21:20 +00:00
Reg2Mem
SampleProfile llvm/test/Transforms/SampleProfile/syntax.ll: Relax MISSING-FILE not to 2014-10-30 22:28:46 +00:00
Scalarizer Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
ScalarRepl Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +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 reinstate r222872: Peephole optimization in switch table lookup: reuse the guarding table comparison if possible. 2014-11-27 15:13:14 +00:00
Sink
SLPVectorizer Vectorize a reduction chain feeding into a 'return' statement. 2014-11-19 16:07:38 +00:00
SROA SROA: The alloca type isn't a candidate promotion type for vectors 2014-11-21 02:34:55 +00:00
StripSymbols Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
StructurizeCFG
TailCallElim Fix tail recursion elimination 2014-11-19 13:32:51 +00:00
TailDup
Util [SwitchLowering] Fix the "fixPhis" function. 2014-11-10 21:05:27 +00:00