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Craig Topper 9f7d4150b9 [X86] Move combineLoopMAddPattern and combineLoopSADPattern to an IR pass before SelecitonDAG. 
These transforms rely on a vector reduction flag on the SDNode
set by SelectionDAGBuilder. This flag exists because SelectionDAG
can't see across basic blocks so SelectionDAGBuilder is looking
across and saving the info. X86 is the only target that uses this
flag currently. By removing the X86 code we can remove the flag
and the SelectionDAGBuilder code.

This pass adds a dedicated IR pass for X86 that looks across the
blocks and transforms the IR into a form that the X86 SelectionDAG
can finish.

An advantage of this new approach is that we can enhance it to
shrink the phi nodes and final reduction tree based on the zeroes
that we need to concatenate to bring the partially reduced
reduction back up to the original width.

Differential Revision: https://reviews.llvm.org/D76649
 		2020-03-26 14:10:20 -07:00
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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
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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
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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
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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
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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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APIntLoadStore.ll
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APIntParam.ll
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APIntSextParam.ll
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APIntZextParam.ll
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BasicInstrs.ll
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ConstantExprLowering.ll
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DbgValueAggregate.ll Migrate function attribute "no-frame-pointer-elim-non-leaf" to "frame-pointer"="non-leaf" as cleanups after D56351 2019-12-24 16:05:15 -08:00
ForceStackAlign.ll Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
MachineBranchProb.ll Rename ExpandISelPseudo->FinalizeISel, delay register reservation 2019-06-19 00:25:39 +00:00
PBQP.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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asm-large-immediate.ll
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assume.ll
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badCallArgLRLLVM.ll
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badFoldGEP.ll
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badarg6.ll
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bool-to-double.ll
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bswap.ll Support generic lowering of vector bswap 2017-11-30 11:06:22 +00:00
builtin-expect.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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call2-ret0.ll
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cast-fp.ll
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cfi-sections.ll Migrate function attribute "no-frame-pointer-elim" to "frame-pointer"="all" as cleanups after D56351 2019-12-24 15:57:33 -08:00
constindices.ll
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crash.ll
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csw-debug-assert.ll [NFC] Add missing REQUIRES clause to a test 2020-03-18 16:35:10 +03:00
dag-combine-crash.ll
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dag-combine-ossfuzz-crash.ll [DAGCombiner] Fix for oss-fuzz bug 2018-04-17 07:22:34 +00:00
dbg_value.ll
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div-neg-power-2.ll
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donothing.ll
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dwarf-md5.ll Remove lit feature object-emission 2020-02-10 15:57:56 -06:00
dwarf-source.ll Remove lit feature object-emission 2020-02-10 15:57:56 -06:00
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 [CodeGen] [ExpandReduction] Fix the bug for ExpandReduction() when vector size isn't power of 2 2019-11-02 23:59:12 -04:00
externally_available.ll
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fastcall.ll
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fneg-fabs.ll [IR] Add a dedicated FNeg IR Instruction 2018-11-13 18:15:47 +00:00
fp-to-int-invalid.ll
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fp_to_int.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
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inline-asm-mem-clobber.ll
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inline-asm-special-strings.ll
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intrinsics.ll Implement strip.invariant.group 2018-07-02 04:49:30 +00:00
invalid-memcpy.ll Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
isunord.ll
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lit.local.cfg [lit] Delete empty lines at the end of lit.local.cfg NFC 2019-06-17 09:51:07 +00:00
live-debug-label.ll [CodeGen] Fix bugs in LiveDebugVariables when debug labels are generated. 2019-01-18 07:17:09 +00:00
llc-start-stop-instance-errors.ll Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""" 2020-02-13 10:16:06 -08:00
llc-start-stop.ll Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""" 2020-02-13 10:16:06 -08:00
llvm-ct-intrinsics.ll
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multiple-return-values-cross-block-with-invoke.ll
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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 Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""" 2020-02-13 10:16:06 -08:00
overflow.ll
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overloaded-intrinsic-name.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
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pr33094.ll
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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
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print-mul-exp.ll [AVR] Remove unneeded XFAILs from the Generic CodeGen tests 2019-01-20 11:16:58 +00:00
print-mul.ll [AVR] Remove unneeded XFAILs from the Generic CodeGen tests 2019-01-20 11:16:58 +00:00
print-shift.ll [AVR] Remove unneeded XFAILs from the Generic CodeGen tests 2019-01-20 11:16:58 +00:00
ptr-annotate.ll
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ret0.ll
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ret42.ll
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select-cc.ll [AVR] Remove unneeded XFAILs from the Generic CodeGen tests 2019-01-20 11:16:58 +00:00
select.ll
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selection-dag-determinism.ll Fix nondeterminism introduced in r353954 2019-03-26 12:18:08 +00:00
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
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vector-casts.ll
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vector-constantexpr.ll
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vector-identity-shuffle.ll
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vector.ll
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zero-sized-array.ll
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