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9cc217ab36eb003dee8ace8359e6f535ac059cfd
clang-p2996/llvm/test/Transforms/LoopVectorize
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Kerry McLaughlin 9cc217ab36 [LoopVectorize] Prevent multiple Phis being generated with in-order reductions 
When using the -enable-strict-reductions flag where UF>1 we generate multiple
Phi nodes, though only one of these is used as an input to the vector.reduce.fadd
intrinsics. The unused Phi nodes are removed later by instcombine.

This patch changes widenPHIInstruction/fixReduction to only generate
one Phi, and adds an additional test for unrolling to strict-fadd.ll

Reviewed By: david-arm

Differential Revision: https://reviews.llvm.org/D100570
2021-04-28 11:29:01 +01:00
..
AArch64
[LoopVectorize] Prevent multiple Phis being generated with in-order reductions
2021-04-28 11:29:01 +01:00
AMDGPU
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
ARM
[LV] Logical and/or select costs
2021-04-08 10:39:47 +01:00
Hexagon
[LV] Fix crash when computing max VF too early
2021-02-01 12:14:59 +00:00
PowerPC
[LV] Add 'fast' flag to test to make sure it will be vectorized.
2021-03-23 15:32:23 +00:00
RISCV
[RISCV] Add basic cost modelling for fixed vector gather/scatter.
2021-03-24 11:14:14 -07:00
SystemZ
[SLP,LV] Use poison constant vector for shufflevector/initial insertelement
2021-01-06 11:22:50 +09:00
VE
[VE][TTI] don't advertise vregs/vops
2020-11-06 11:12:10 +01:00
X86
[LoopVectorize] Fix bug where predicated loads/stores were dropped
2021-04-22 15:05:54 +00:00
XCore
…
12-12-11-if-conv.ll
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2012-10-20-infloop.ll
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2012-10-22-isconsec.ll
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2016-07-27-loop-vec.ll
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alias-set-with-uncomputable-bounds.ll
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align.ll
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assume.ll
[LoopVectorize] auto-generate complete checks; NFC
2021-04-01 11:55:41 -04:00
bsd_regex.ll
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bzip_reverse_loops.ll
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calloc.ll
…
cast-induction.ll
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check-prof-info.ll
Revert "Use uint64_t for branch weights instead of uint32_t"
2020-10-31 00:25:32 -07:00
conditional-assignment.ll
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consec_no_gep.ll
…
consecutive-ptr-uniforms.ll
[SLP,LV] Use poison constant vector for shufflevector/initial insertelement
2021-01-06 11:22:50 +09:00
control-flow.ll
Reapply "[LV] Vectorize (some) early and multiple exit loops"" w/fix for builder
2020-12-28 10:13:28 -08:00
cpp-new-array.ll
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dbg.value.ll
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dead_instructions.ll
[LV] Keep Primary Induction alive when folding tail by masking
2020-11-24 15:12:54 +02:00
debugloc.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
demanded-bits-of-pointer-instruction.ll
…
diag-missing-instr-debug-loc.ll
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diag-with-hotness-info-2.ll
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diag-with-hotness-info.ll
…
disable_nonforced_enable.ll
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disable_nonforced.ll
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discriminator.ll
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dont-fold-tail-for-const-TC.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
dont-fold-tail-for-divisible-TC.ll
[SCEV] Apply loop guards to divisibility tests
2021-02-02 08:09:39 +02:00
ee-crash.ll
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exact.ll
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explicit_outer_detection.ll
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explicit_outer_nonuniform_inner.ll
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explicit_outer_uniform_diverg_branch.ll
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extract-last-veclane.ll
[SVE][LoopVectorize] Add support for extracting the last lane of a scalable vector
2021-03-05 09:57:56 +00:00
fcmp-vectorize.ll
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first-order-recurrence-complex.ll
[NFCI] SCEVExpander: emit intrinsics for integral {u,s}{min,max} SCEV expressions
2021-03-06 21:52:46 +03:00
first-order-recurrence-multiply-recurrences.ll
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first-order-recurrence.ll
[NFCI] SCEVExpander: emit intrinsics for integral {u,s}{min,max} SCEV expressions
2021-03-06 21:52:46 +03:00
fix-reduction-dbg.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
flags.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
float-induction.ll
[LoopVectorize] relax FMF constraint for FP induction
2021-03-18 08:11:22 -04:00
float-minmax-instruction-flag.ll
[LoopVectorizer] Require no-signed-zeros-fp-math=true for fmin/fmax
2021-02-15 13:47:05 +00:00
float-reduction.ll
Enable support for floating-point division reductions
2020-11-23 20:00:58 -05:00
fneg.ll
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followup.ll
[LV] Collect dead induction truncates
2020-10-08 08:28:58 +01:00
funcall.ll
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gcc-examples.ll
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gep_with_bitcast.ll
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global_alias.ll
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hints-trans.ll
[SimplifyCFG] TryToSimplifyUncondBranchFromEmptyBlock() already knows how to preserve DomTree
2020-12-17 01:03:49 +03:00
hoist-loads.ll
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i8-induction.ll
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icmp-uniforms.ll
[VPlan] Include name when printing after 93a9d2de8f.
2021-03-23 09:50:14 +00:00
if-conv-crash.ll
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if-conversion-edgemasks.ll
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if-conversion-nest.ll
[LoopVectorize] Fix VPRecipeBuilder::createEdgeMask to correctly generate the mask
2021-02-14 21:12:34 +09:00
if-conversion-reduction.ll
…
if-conversion.ll
…
if-pred-non-void.ll
[LoopVectorize] Fix VPRecipeBuilder::createEdgeMask to correctly generate the mask
2021-02-14 21:12:34 +09:00
if-pred-not-when-safe.ll
[SimplifyCFG] TryToSimplifyUncondBranchFromEmptyBlock() already knows how to preserve DomTree
2020-12-17 01:03:49 +03:00
if-pred-stores.ll
[NFCI] SCEVExpander: emit intrinsics for integral {u,s}{min,max} SCEV expressions
2021-03-06 21:52:46 +03:00
if-reduction.ll
[LoopVectorize] Fix VPRecipeBuilder::createEdgeMask to correctly generate the mask
2021-02-14 21:12:34 +09:00
incorrect-dom-info.ll
…
increment.ll
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induction_plus.ll
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induction-step.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
induction.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
infiniteloop.ll
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int_sideeffect.ll
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interleaved-accesses-1.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
interleaved-accesses-2.ll
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interleaved-accesses-3.ll
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interleaved-accesses-alias.ll
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interleaved-accesses-masked-group.ll
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interleaved-accesses-pred-stores.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
interleaved-accesses-uniform-load.ll
…
interleaved-accesses.ll
[InstCombine] (X | Op01C) + Op1C --> X + (Op01C + Op1C) iff the or is actually an add
2021-04-11 18:08:08 +03:00
interleaved-acess-with-remarks.ll
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intrinsic.ll
[LV] Add abs/smin/smax/umin/umax intrinsics to isTriviallyVectorizable
2020-07-29 10:23:07 -07:00
invariant-store-vectorization.ll
[NFCI] SCEVExpander: emit intrinsics for integral {u,s}{min,max} SCEV expressions
2021-03-06 21:52:46 +03:00
irregular_type.ll
[LoopVectorize] Refine hasIrregularType predicate
2021-03-17 17:03:47 +01:00
iv_outside_user.ll
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lcssa-crash.ll
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libcall-remark.ll
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lifetime.ll
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loop-form.ll
[NFCI] SCEVExpander: emit intrinsics for integral {u,s}{min,max} SCEV expressions
2021-03-06 21:52:46 +03:00
loop-legality-checks.ll
Reapply "[LV] Vectorize (some) early and multiple exit loops"" w/fix for builder
2020-12-28 10:13:28 -08:00
loop-scalars.ll
[test] Fix Transforms/LoopVectorize under NPM
2020-12-07 21:48:21 -08:00
loop-vect-memdep.ll
…
loop-vect-option.ll
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memdep-fold-tail.ll
[LV] Fallback strategies if tail-folding fails
2020-08-26 16:55:25 +01:00
memdep.ll
…
metadata-unroll.ll
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metadata-width.ll
[LV] Legalize scalable VF hints
2021-01-08 10:49:44 +00:00
metadata.ll
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middle-block-dbg.ll
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miniters.ll
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minmax_reduction.ll
[LoopVectorizer] Require no-signed-zeros-fp-math=true for fmin/fmax
2021-02-15 13:47:05 +00:00
mixed-precision-remarks.ll
[LV] Add analysis remark for mixed precision conversions
2021-02-17 21:37:08 -05:00
multi-use-reduction-bug.ll
…
multiple-address-spaces.ll
…
multiple-exits-versioning.ll
[LV] Add test cases with multiple exits which require versioning.
2021-01-20 11:48:48 +00:00
multiple-strides-vectorization.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
no_array_bounds_scalable.ll
[SVE] Add support for scalable vectors with vectorize.scalable.enable loop attribute
2020-12-02 13:23:43 +00:00
no_array_bounds.ll
…
no_idiv_reduction.ll
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no_int_induction.ll
…
no_outside_user.ll
…
no_switch_disable_vectorization.ll
…
no_switch.ll
…
no-interleave-up-front.ll
…
noalias-md-licm.ll
Rename scoped-noalias -> scoped-noalias-aa
2020-07-24 12:14:27 -07:00
noalias-md.ll
Rename scoped-noalias -> scoped-noalias-aa
2020-07-24 12:14:27 -07:00
noalias-scope-decl.ll
[noalias.decl] Look through llvm.experimental.noalias.scope.decl
2021-01-19 20:09:42 +01:00
nofloat-report.ll
…
nofloat.ll
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non-const-n.ll
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nontemporal.ll
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novect-lcssa-cfg-invalidation.ll
[NewPM] Don't print 'Invalidating all non-preserved analyses'
2020-07-30 19:40:29 -07:00
nsw-crash.ll
…
nuw.ll
…
opt.ll
…
optimal-epilog-vectorization-limitations.ll
[LV] Legalize scalable VF hints
2021-01-08 10:49:44 +00:00
optimal-epilog-vectorization-liveout.ll
[LV] Epilogue Vectorization with Optimal Control Flow (Recommit)
2020-12-02 10:09:56 -05:00
optimal-epilog-vectorization-scalable.ll
[LV] Legalize scalable VF hints
2021-01-08 10:49:44 +00:00
optimal-epilog-vectorization.ll
[NewPM][opt] Run the "default" AA pipeline by default
2021-01-21 21:08:54 -08:00
optsize.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
outer_loop_test1.ll
[VPlan] Manage pairs of incoming (VPValue, VPBB) in VPWidenPHIRecipe.
2021-02-22 09:44:25 +00:00
outer_loop_test2.ll
[VPlan] Manage pairs of incoming (VPValue, VPBB) in VPWidenPHIRecipe.
2021-02-22 09:44:25 +00:00
outer-loop-vec-phi-predecessor-order.ll
[VPlan] Manage pairs of incoming (VPValue, VPBB) in VPWidenPHIRecipe.
2021-02-22 09:44:25 +00:00
partial-lcssa.ll
…
phi-cost.ll
[test] Fix Transforms/LoopVectorize under NPM
2020-12-07 21:48:21 -08:00
phi-hang.ll
…
pointer-induction.ll
Reland [SCEV] Improve modelling for (null) pointer constants
2021-03-13 16:05:34 +03:00
pr25281.ll
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pr28541.ll
…
pr30654-phiscev-sext-trunc.ll
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pr30806-phi-scev.ll
…
pr30806.ll
…
pr31098.ll
…
pr31190.ll
…
pr32859.ll
…
pr33706.ll
…
pr34681.ll
[test, LoopVectorize] Fix use of var defined in CHECK-NOT
2021-04-09 10:01:57 +01:00
pr35743.ll
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pr35773.ll
…
pr36311.ll
…
pr36983.ll
…
pr37248.ll
…
pr37515.ll
…
pr38697.ll
…
pr38800.ll
…
pr39099.ll
…
pr39417-optsize-scevchecks.ll
[SLP,LV] Use poison constant vector for shufflevector/initial insertelement
2021-01-06 11:22:50 +09:00
pr43166-fold-tail-by-masking.ll
…
pr44488-predication.ll
[SLP,LV] Use poison constant vector for shufflevector/initial insertelement
2021-01-06 11:22:50 +09:00
pr45259.ll
[NFC][LoopVectorize] Autogenerate check lines in pr45259.ll
2021-04-20 21:29:21 +03:00
pr45525.ll
…
pr45679-fold-tail-by-masking.ll
…
pr46525-expander-insertpoint.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
pr47343-expander-lcssa-after-cfg-update.ll
[LV] Generate RT checks up-front and remove them if required.
2021-03-01 10:48:04 +00:00
pr48832.ll
[LoopVectorize] Fix VPRecipeBuilder::createEdgeMask to correctly generate the mask
2021-02-14 21:12:34 +09:00
preserve-dbg-loc-and-loop-metadata.ll
…
ptr_loops.ll
…
ptr-induction.ll
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read-only.ll
…
reduction-inloop-pred.ll
[LoopVectorize] Fix VPRecipeBuilder::createEdgeMask to correctly generate the mask
2021-02-14 21:12:34 +09:00
reduction-inloop-uf4.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
reduction-inloop.ll
[LoopVectorize] Fix VPRecipeBuilder::createEdgeMask to correctly generate the mask
2021-02-14 21:12:34 +09:00
reduction-order.ll
[LV] Tail folded inloop reductions.
2020-10-11 16:58:34 +01:00
reduction-predselect.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
reduction-ptr.ll
[Analysis][LoopVectorize] do not form reductions of pointers
2021-02-19 14:01:57 -05:00
reduction-small-size.ll
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reduction.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
remarks-multi-exit-loops.ll
[LV] Fix crash when generating remarks with multi-exit loops.
2021-01-01 13:54:41 +00:00
remove_metadata.ll
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reverse_induction.ll
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reverse_iter.ll
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runtime-check-address-space.ll
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runtime-check-needed-but-empty.ll
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runtime-check-pointer-element-type.ll
[LAA] Use DL to get element size for bound computation.
2020-10-07 18:57:07 +01:00
runtime-check-readonly-address-space.ll
…
runtime-check-readonly.ll
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runtime-check.ll
Revert "[InstCombine] add multi-use demanded bits fold for add with low-bit mask"
2020-11-16 14:48:09 -05:00
runtime-drop-crash.ll
[LV] Generate RT checks up-front and remove them if required.
2021-03-01 10:48:04 +00:00
safegep.ll
…
same-base-access.ll
…
scalable-loop-unpredicated-body-scalar-tail.ll
[LV] Legalize scalable VF hints
2021-01-08 10:49:44 +00:00
scalable-vf-hint.ll
[LV] Legalize scalable VF hints
2021-01-08 10:49:44 +00:00
scalar_after_vectorization.ll
…
scalar-select.ll
…
scev-exitlim-crash.ll
…
select-reduction.ll
[Vectorizers][TTI] remove option to bypass creation of vector reduction intrinsics
2021-02-12 08:13:50 -05:00
simple-unroll.ll
…
single-value-blend-phis.ll
Recommit "[LV] Allow tryToCreateWidenRecipe to return a VPValue, use for blends."
2021-02-24 10:36:02 +00:00
skeleton-lcssa-crash.ll
[LV] Generate RT checks up-front and remove them if required.
2021-03-01 10:48:04 +00:00
skip-iterations.ll
…
small-loop.ll
…
start-non-zero.ll
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store-shuffle-bug.ll
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struct_access.ll
…
tail-folding-counting-down.ll
[LV] Fallback strategies if tail-folding fails
2020-08-26 16:55:25 +01:00
tail-folding-vectorization-factor-1.ll
[LoopVectorizer] Don't create unused block masks for reductions. NFC
2020-07-30 14:28:08 +01:00
tbaa-nodep.ll
[SimplifyCFG] TryToSimplifyUncondBranchFromEmptyBlock() already knows how to preserve DomTree
2020-12-17 01:03:49 +03:00
tripcount.ll
Revert "Use uint64_t for branch weights instead of uint32_t"
2020-10-31 00:25:32 -07:00
undef-inst-bug.ll
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uniform-blend.ll
[LV] Fix name in CHECK pattern after fb3ca7076
2021-03-12 13:31:48 +00:00
unroll_novec.ll
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unroll-novec-memcheck-metadata.ll
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unroll.ll
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unsafe-dep-remark.ll
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unsafe-vf-hint-remark.ll
[LV] Clamp VF hint when unsafe
2020-12-01 11:30:34 +00:00
unsized-pointee-crash.ll
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use-scalar-epilogue-if-tp-fails.ll
[LV] Fallback strategies if tail-folding fails
2020-08-26 16:55:25 +01:00
value-ptr-bug.ll
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vect-phiscev-sext-trunc.ll
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vect.omp.persistence.ll
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vect.stats.ll
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vector-geps.ll
[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder
2020-12-30 04:21:04 +09:00
vector-intrinsic-call-cost.ll
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vectorize-once.ll
[SimplifyCFG] TryToSimplifyUncondBranchFromEmptyBlock() already knows how to preserve DomTree
2020-12-17 01:03:49 +03:00
vectorize-pointer-phis.ll
[LV,LAA] Add test cases with pointer phis in loops.
2021-04-27 13:49:32 +01:00
vectorizeVFone.ll
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version-mem-access.ll
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vplan_hcfg_stress_test.ll
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vplan-dot-printing.ll
[VPlan] Add plain text (not DOT's digraph) dumps
2021-03-19 10:50:12 -07:00
vplan-outer-loop-uncomputable-trip-count.ll
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vplan-printing.ll
[VPlan] Include name when printing after 93a9d2de8f.
2021-03-23 09:50:14 +00:00
vplan-stress-test-no-explict-vf.ll
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vplan-vectorize-inner-loop-reduction.ll
[VPlan] Manage pairs of incoming (VPValue, VPBB) in VPWidenPHIRecipe.
2021-02-22 09:44:25 +00:00
vplan-widen-call-instruction.ll
[VPlan] Support to widen call intructions in VPlan native path
2021-03-06 21:59:52 +00:00
vplan-widen-select-instruction.ll
[VPlan] Support to widen select intructions in VPlan native path
2021-03-10 20:59:53 +00:00
write-only.ll
…
zero-sized-pointee-crash.ll
…