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Rong Xu 3573d8da36 [CodeGen] Peel off the dominant case in switch statement in lowering 
This patch peels off the top case in switch statement into a branch if the
probability exceeds a threshold. This will help the branch prediction and
avoids the extra compares when lowering into chain of branches.

Differential Revision: http://reviews.llvm.org/D39262

llvm-svn: 318202
2017-11-14 21:44:09 +00:00
..
2002-04-14-UnexpectedUnsignedType.ll
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2002-04-16-StackFrameSizeAlignment.ll
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2003-05-27-phifcmpd.ll
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2003-05-27-useboolinotherbb.ll
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2003-05-27-usefsubasbool.ll
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2003-05-28-ManyArgs.ll
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2003-05-30-BadFoldGEP.ll
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2003-05-30-BadPreselectPhi.ll
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2003-07-06-BadIntCmp.ll
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2003-07-07-BadLongConst.ll
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2003-07-08-BadCastToBool.ll
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2003-07-29-BadConstSbyte.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
2004-05-09-LiveVarPartialRegister.ll
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2005-01-18-SetUO-InfLoop.ll
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2005-04-09-GlobalInPHI.ll
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2005-10-18-ZeroSizeStackObject.ll
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2005-10-21-longlonggtu.ll
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2005-12-01-Crash.ll
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2005-12-12-ExpandSextInreg.ll
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2006-01-12-BadSetCCFold.ll
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2006-01-18-InvalidBranchOpcodeAssert.ll
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2006-02-12-InsertLibcall.ll
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2006-03-01-dagcombineinfloop.ll
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2006-04-26-SetCCAnd.ll
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2006-04-28-Sign-extend-bool.ll
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2006-05-06-GEP-Cast-Sink-Crash.ll
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2006-06-12-LowerSwitchCrash.ll
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2006-06-13-ComputeMaskedBitsCrash.ll
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2006-06-28-SimplifySetCCCrash.ll
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2006-07-03-schedulers.ll
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2006-08-30-CoalescerCrash.ll
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2006-09-02-LocalAllocCrash.ll
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2006-09-06-SwitchLowering.ll
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2006-10-27-CondFolding.ll
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2006-10-29-Crash.ll
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2006-11-20-DAGCombineCrash.ll
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2007-01-15-LoadSelectCycle.ll
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2007-02-25-invoke.ll
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2007-04-08-MultipleFrameIndices.ll
[AVR] XFAIL a set of failing CodeGen tests
2017-02-08 10:24:18 +00:00
2007-04-13-SwitchLowerBadPhi.ll
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2007-04-17-lsr-crash.ll
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2007-04-27-InlineAsm-X-Dest.ll
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2007-04-27-LargeMemObject.ll
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2007-04-30-LandingPadBranchFolding.ll
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2007-05-03-EHTypeInfo.ll
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2007-05-15-InfiniteRecursion.ll
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2007-12-17-InvokeAsm.ll
[AVR] XFAIL a set of failing CodeGen tests
2017-02-08 10:24:18 +00:00
2007-12-31-UnusedSelector.ll
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2008-01-25-dag-combine-mul.ll
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2008-01-30-LoadCrash.ll
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2008-02-04-Ctlz.ll
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2008-02-04-ExtractSubvector.ll
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2008-02-20-MatchingMem.ll
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2008-02-25-NegateZero.ll
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2008-02-26-NegatableCrash.ll
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2008-08-07-PtrToInt-SmallerInt.ll
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2009-03-17-LSR-APInt.ll
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2009-03-29-SoftFloatVectorExtract.ll
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2009-04-10-SinkCrash.ll
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2009-04-28-i128-cmp-crash.ll
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2009-11-16-BadKillsCrash.ll
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2010-07-27-DAGCombineCrash.ll
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2010-11-04-BigByval.ll
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2010-ZeroSizedArg.ll
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2011-01-06-BigNumberCrash.ll
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2011-07-07-ScheduleDAGCrash.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
2012-06-08-APIntCrash.ll
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2013-03-20-APFloatCrash.ll
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2014-02-05-OpaqueConstants.ll
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add-with-overflow-24.ll
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add-with-overflow-128.ll
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add-with-overflow.ll
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addr-label.ll
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annotate.ll
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APIntLoadStore.ll
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APIntParam.ll
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APIntSextParam.ll
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APIntZextParam.ll
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asm-large-immediate.ll
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assume.ll
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badarg6.ll
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badCallArgLRLLVM.ll
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badFoldGEP.ll
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BasicInstrs.ll
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bool-to-double.ll
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builtin-expect.ll
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call2-ret0.ll
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call-ret0.ll
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call-ret42.ll
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call-void.ll
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cast-fp.ll
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cfi-sections.ll
PR 31534: When emitting both DWARF unwind tables and debug information,
2017-01-05 20:55:28 +00:00
ConstantExprLowering.ll
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constindices.ll
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crash.ll
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dag-combine-crash.ll
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dbg_value.ll
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div-neg-power-2.ll
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donothing.ll
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dont-remove-empty-preheader.ll
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edge-bundles-blockIDs.ll
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empty-insertvalue.ll
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empty-load-store.ll
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empty-phi.ll
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exception-handling.ll
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expand-experimental-reductions.ll
Add a late IR expansion pass for the experimental reduction intrinsics.
2017-05-10 09:42:49 +00:00
externally_available.ll
Do not verify MachimeDominatorTree if it is not calculated
2017-03-02 12:00:10 +00:00
fastcall.ll
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fneg-fabs.ll
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ForceStackAlign.ll
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fp_to_int.ll
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fp-to-int-invalid.ll
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fpowi-promote.ll
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fwdtwice.ll
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global-ret0.ll
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hello.ll
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i128-addsub.ll
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i128-arith.ll
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icmp-illegal.ll
Remove an empty line in icmp-illegal.ll . NFC
2017-02-27 16:09:44 +00:00
inline-asm-mem-clobber.ll
[AVR] XFAIL a set of failing CodeGen tests
2017-02-08 10:24:18 +00:00
inline-asm-special-strings.ll
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intrinsics.ll
Add an @llvm.sideeffect intrinsic
2017-11-08 21:59:51 +00:00
invalid-memcpy.ll
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isunord.ll
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lit.local.cfg
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llc-start-stop.ll
re-land [ExpandMemCmp] Split ExpandMemCmp from CodeGen into its own pass."
2017-11-03 12:12:27 +00:00
llvm-ct-intrinsics.ll
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MachineBranchProb.ll
[CodeGen] Peel off the dominant case in switch statement in lowering
2017-11-14 21:44:09 +00:00
multiple-return-values-cross-block-with-invoke.ll
[Hexagon] Unxfail passing tests
2017-04-13 16:05:35 +00:00
negintconst.ll
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nested-select.ll
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no-target.ll
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opt-codegen-no-target-machine.ll
[LegacyPassManager] Remove TargetMachine constructors
2017-05-18 17:21:13 +00:00
overflow.ll
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overloaded-intrinsic-name.ll
Only run the overloaded-intrinsic-name.ll test once, with FileCheck.
2017-03-01 01:56:41 +00:00
PBQP.ll
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pr2625.ll
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pr3288.ll
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pr12507.ll
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pr24662.ll
Fix constant folding of fp2int to large integers
2017-03-19 16:50:25 +00:00
pr33094.ll
Handle ConstantExpr correctly in SelectionDAGBuilder
2017-07-09 16:01:04 +00:00
print-add.ll
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print-after.ll
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print-arith-fp.ll
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print-arith-int.ll
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print-int.ll
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print-machineinstrs.ll
[SystemZ] Fix trap issue and enable expensive checks.
2017-06-23 14:30:46 +00:00
print-mul-exp.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
print-mul.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
print-shift.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
ptr-annotate.ll
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ret0.ll
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ret42.ll
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select-cc.ll
[Hexagon] Unxfail passing tests
2017-04-13 16:05:35 +00:00
select.ll
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shift-int64.ll
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stacksave-restore.ll
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storetrunc-fp.ll
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switch-lower-feature.ll
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switch-lower.ll
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trap.ll
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undef-phi.ll
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v-split.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
vector-casts.ll
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vector-constantexpr.ll
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vector-identity-shuffle.ll
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vector-redux.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
vector.ll
[AVR] Add/remove XFAILs to get the backend passing Generic CodeGen tests
2017-07-16 23:33:50 +00:00
zero-probability.mir
[MIParser] Ensure getHexUint doesn't produce APInts with a bitwidth of 0
2017-09-01 22:17:14 +00:00
zero-sized-array.ll
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