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[VPlan] Implementation of onlyFirstLaneUsed for VPLiveOut class #93513

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[VPlan] Implementation of onlyFirstLaneUsed for VPLiveOut class #93513

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3bde379
[VPlan] precommit test for widen-ptr-induction transform
arcbbb May 28, 2024
7d5cb13
[VPlan] Implementation of onlyFirstLaneUsed for VPLiveOut class
arcbbb May 28, 2024
11243c6
update sve tests
arcbbb May 28, 2024
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2 changes: 2 additions & 0 deletions llvm/lib/Transforms/Vectorize/VPlan.h
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Expand Up @@ -693,6 +693,8 @@ class VPLiveOut : public VPUser {
return true;
}

bool onlyFirstLaneUsed(const VPValue *Op) const override;

PHINode *getPhi() const { return Phi; }

#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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7 changes: 7 additions & 0 deletions llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
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Expand Up @@ -186,6 +186,13 @@ bool VPRecipeBase::mayHaveSideEffects() const {
}
}

bool VPLiveOut::onlyFirstLaneUsed(const VPValue *Op) const {
assert(is_contained(operands(), Op) && "Op must be an operand of the recipe");

return vputils::isUniformAfterVectorization(getOperand(0)) ||
isa<VPWidenPointerInductionRecipe>(Op);
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fixupIVUsers removes the VPLiveOut after its fix. Given that the end value of IV is derived from TripCount, I just think we might alternatively eliminate the use of ptr-iv by creating a new VPValue for VPLiveOut.

}

void VPLiveOut::fixPhi(VPlan &Plan, VPTransformState &State) {
auto Lane = VPLane::getLastLaneForVF(State.VF);
VPValue *ExitValue = getOperand(0);
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78 changes: 42 additions & 36 deletions llvm/test/Transforms/LoopVectorize/AArch64/sve-live-out-pointer-induction.ll
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Expand Up @@ -27,50 +27,56 @@ define ptr @test(ptr %start.1, ptr %start.2, ptr %end) {
; CHECK-NEXT: [[TMP11:%.*]] = mul i64 [[TMP10]], 4
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[POINTER_PHI:%.*]] = phi ptr [ [[START_1]], [[VECTOR_PH]] ], [ [[PTR_IND:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP12:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP13:%.*]] = mul i64 [[TMP12]], 2
; CHECK-NEXT: [[TMP14:%.*]] = mul i64 [[TMP13]], 2
; CHECK-NEXT: [[TMP15:%.*]] = mul i64 8, [[TMP14]]
; CHECK-NEXT: [[TMP16:%.*]] = mul i64 [[TMP13]], 0
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 2 x i64> poison, i64 [[TMP16]], i64 0
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = mul i64 [[INDEX]], 8
; CHECK-NEXT: [[TMP12:%.*]] = call <vscale x 2 x i64> @llvm.experimental.stepvector.nxv2i64()
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 2 x i64> poison, i64 [[OFFSET_IDX]], i64 0
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 2 x i64> [[DOTSPLATINSERT]], <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
; CHECK-NEXT: [[TMP17:%.*]] = call <vscale x 2 x i64> @llvm.experimental.stepvector.nxv2i64()
; CHECK-NEXT: [[TMP18:%.*]] = add <vscale x 2 x i64> [[DOTSPLAT]], [[TMP17]]
; CHECK-NEXT: [[VECTOR_GEP:%.*]] = mul <vscale x 2 x i64> [[TMP18]], shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 8, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP19:%.*]] = getelementptr i8, ptr [[POINTER_PHI]], <vscale x 2 x i64> [[VECTOR_GEP]]
; CHECK-NEXT: [[TMP20:%.*]] = mul i64 [[TMP13]], 1
; CHECK-NEXT: [[DOTSPLATINSERT5:%.*]] = insertelement <vscale x 2 x i64> poison, i64 [[TMP20]], i64 0
; CHECK-NEXT: [[TMP13:%.*]] = add <vscale x 2 x i64> zeroinitializer, [[TMP12]]
; CHECK-NEXT: [[TMP14:%.*]] = mul <vscale x 2 x i64> [[TMP13]], shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 8, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP15:%.*]] = add <vscale x 2 x i64> [[DOTSPLAT]], [[TMP14]]
; CHECK-NEXT: [[TMP16:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP17:%.*]] = add i64 [[OFFSET_IDX]], 8
; CHECK-NEXT: [[TMP18:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP19:%.*]] = mul i64 [[TMP18]], 2
; CHECK-NEXT: [[DOTSPLATINSERT5:%.*]] = insertelement <vscale x 2 x i64> poison, i64 [[TMP19]], i64 0
; CHECK-NEXT: [[DOTSPLAT6:%.*]] = shufflevector <vscale x 2 x i64> [[DOTSPLATINSERT5]], <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
; CHECK-NEXT: [[TMP21:%.*]] = call <vscale x 2 x i64> @llvm.experimental.stepvector.nxv2i64()
; CHECK-NEXT: [[TMP22:%.*]] = add <vscale x 2 x i64> [[DOTSPLAT6]], [[TMP21]]
; CHECK-NEXT: [[VECTOR_GEP7:%.*]] = mul <vscale x 2 x i64> [[TMP22]], shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 8, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP23:%.*]] = getelementptr i8, ptr [[POINTER_PHI]], <vscale x 2 x i64> [[VECTOR_GEP7]]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = mul i64 [[INDEX]], 8
; CHECK-NEXT: [[TMP24:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP25:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP26:%.*]] = mul i64 [[TMP25]], 2
; CHECK-NEXT: [[TMP27:%.*]] = add i64 [[TMP26]], 0
; CHECK-NEXT: [[TMP28:%.*]] = mul i64 [[TMP27]], 8
; CHECK-NEXT: [[TMP29:%.*]] = add i64 [[OFFSET_IDX]], [[TMP28]]
; CHECK-NEXT: [[TMP30:%.*]] = getelementptr i8, ptr [[START_2]], i64 [[TMP24]]
; CHECK-NEXT: [[TMP31:%.*]] = getelementptr i8, ptr [[START_2]], i64 [[TMP29]]
; CHECK-NEXT: [[TMP32:%.*]] = getelementptr i64, ptr [[TMP30]], i32 0
; CHECK-NEXT: [[TMP33:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP34:%.*]] = mul i64 [[TMP33]], 2
; CHECK-NEXT: [[TMP35:%.*]] = getelementptr i64, ptr [[TMP30]], i64 [[TMP34]]
; CHECK-NEXT: store <vscale x 2 x i64> zeroinitializer, ptr [[TMP32]], align 8
; CHECK-NEXT: [[TMP20:%.*]] = add <vscale x 2 x i64> [[DOTSPLAT6]], [[TMP12]]
; CHECK-NEXT: [[TMP21:%.*]] = mul <vscale x 2 x i64> [[TMP20]], shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 8, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP22:%.*]] = add <vscale x 2 x i64> [[DOTSPLAT]], [[TMP21]]
; CHECK-NEXT: [[TMP23:%.*]] = add i64 [[TMP19]], 0
; CHECK-NEXT: [[TMP24:%.*]] = mul i64 [[TMP23]], 8
; CHECK-NEXT: [[TMP25:%.*]] = add i64 [[OFFSET_IDX]], [[TMP24]]
; CHECK-NEXT: [[TMP26:%.*]] = add i64 [[TMP19]], 1
; CHECK-NEXT: [[TMP27:%.*]] = mul i64 [[TMP26]], 8
; CHECK-NEXT: [[TMP28:%.*]] = add i64 [[OFFSET_IDX]], [[TMP27]]
; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[START_1]], i64 [[TMP16]]
; CHECK-NEXT: [[NEXT_GEP7:%.*]] = getelementptr i8, ptr [[START_1]], i64 [[TMP17]]
; CHECK-NEXT: [[NEXT_GEP8:%.*]] = getelementptr i8, ptr [[START_1]], i64 [[TMP25]]
; CHECK-NEXT: [[NEXT_GEP9:%.*]] = getelementptr i8, ptr [[START_1]], i64 [[TMP28]]
; CHECK-NEXT: [[OFFSET_IDX10:%.*]] = mul i64 [[INDEX]], 8
; CHECK-NEXT: [[TMP29:%.*]] = add i64 [[OFFSET_IDX10]], 0
; CHECK-NEXT: [[TMP30:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP31:%.*]] = mul i64 [[TMP30]], 2
; CHECK-NEXT: [[TMP32:%.*]] = add i64 [[TMP31]], 0
; CHECK-NEXT: [[TMP33:%.*]] = mul i64 [[TMP32]], 8
; CHECK-NEXT: [[TMP34:%.*]] = add i64 [[OFFSET_IDX10]], [[TMP33]]
; CHECK-NEXT: [[NEXT_GEP11:%.*]] = getelementptr i8, ptr [[START_2]], i64 [[TMP29]]
; CHECK-NEXT: [[NEXT_GEP12:%.*]] = getelementptr i8, ptr [[START_2]], i64 [[TMP34]]
; CHECK-NEXT: [[TMP35:%.*]] = getelementptr i64, ptr [[NEXT_GEP11]], i32 0
; CHECK-NEXT: [[TMP36:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP37:%.*]] = mul i64 [[TMP36]], 2
; CHECK-NEXT: [[TMP38:%.*]] = getelementptr i64, ptr [[NEXT_GEP11]], i64 [[TMP37]]
; CHECK-NEXT: store <vscale x 2 x i64> zeroinitializer, ptr [[TMP35]], align 8
; CHECK-NEXT: store <vscale x 2 x i64> zeroinitializer, ptr [[TMP38]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP11]]
; CHECK-NEXT: [[PTR_IND]] = getelementptr i8, ptr [[POINTER_PHI]], i64 [[TMP15]]
; CHECK-NEXT: [[TMP36:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP36]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-NEXT: [[TMP39:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP39]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP3]], [[N_VEC]]
; CHECK-NEXT: [[CMO:%.*]] = sub i64 [[N_VEC]], 1
; CHECK-NEXT: [[TMP37:%.*]] = mul i64 [[CMO]], 8
; CHECK-NEXT: [[IND_ESCAPE:%.*]] = getelementptr i8, ptr [[START_1]], i64 [[TMP37]]
; CHECK-NEXT: [[TMP40:%.*]] = mul i64 [[CMO]], 8
; CHECK-NEXT: [[IND_ESCAPE:%.*]] = getelementptr i8, ptr [[START_1]], i64 [[TMP40]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[START_1]], [[ENTRY:%.*]] ]
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98 changes: 98 additions & 0 deletions llvm/test/Transforms/LoopVectorize/vplan-optimize-ptr-induction.ll
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@@ -0,0 +1,98 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -scalable-vectorization=on -force-target-supports-scalable-vectors -passes=loop-vectorize < %s -S | FileCheck %s
define ptr @foo(ptr %y, float %alpha, i32 %N) {
; CHECK-LABEL: define ptr @foo(
; CHECK-SAME: ptr [[Y:%.*]], float [[ALPHA:%.*]], i32 [[N:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-NEXT: br i1 [[CMP3]], label %[[FOR_BODY_PREHEADER:.*]], label %[[FOR_COND_CLEANUP:.*]]
; CHECK: [[FOR_BODY_PREHEADER]]:
; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[N]] to i64
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP0]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[Y]], i64 [[N_VEC]]
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 1 x float> poison, float [[ALPHA]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 1 x float> [[BROADCAST_SPLATINSERT]], <vscale x 1 x float> poison, <vscale x 1 x i32> zeroinitializer
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[TMP6:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP3:%.*]] = call <vscale x 1 x i64> @llvm.experimental.stepvector.nxv1i64()
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 1 x i64> poison, i64 [[TMP6]], i64 0
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 1 x i64> [[DOTSPLATINSERT]], <vscale x 1 x i64> poison, <vscale x 1 x i32> zeroinitializer
; CHECK-NEXT: [[TMP8:%.*]] = add <vscale x 1 x i64> zeroinitializer, [[TMP3]]
; CHECK-NEXT: [[VECTOR_GEP:%.*]] = mul <vscale x 1 x i64> [[TMP8]], shufflevector (<vscale x 1 x i64> insertelement (<vscale x 1 x i64> poison, i64 1, i64 0), <vscale x 1 x i64> poison, <vscale x 1 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP9:%.*]] = add <vscale x 1 x i64> [[DOTSPLAT]], [[VECTOR_GEP]]
; CHECK-NEXT: [[TMP7:%.*]] = add i64 [[TMP6]], 0
; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[Y]], i64 [[TMP7]]
; CHECK-NEXT: [[TMP10:%.*]] = add i64 [[TMP6]], 0
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds float, ptr [[Y]], i64 [[TMP10]]
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds float, ptr [[TMP11]], i32 0
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 1 x float>, ptr [[TMP12]], align 4
; CHECK-NEXT: [[TMP13:%.*]] = fadd fast <vscale x 1 x float> [[WIDE_LOAD]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: store <vscale x 1 x float> [[TMP13]], ptr [[TMP12]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[TMP6]], [[TMP2]]
; CHECK-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP14]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEXT: [[CMO:%.*]] = sub i64 [[N_VEC]], 1
; CHECK-NEXT: [[IND_ESCAPE:%.*]] = getelementptr i8, ptr [[Y]], i64 [[CMO]]
; CHECK-NEXT: br i1 [[CMP_N]], label %[[FOR_COND_CLEANUP_LOOPEXIT:.*]], label %[[SCALAR_PH]]
; CHECK: [[SCALAR_PH]]:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[IND_END]], %[[MIDDLE_BLOCK]] ], [ [[Y]], %[[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_COND_CLEANUP_LOOPEXIT]]:
; CHECK-NEXT: [[END_0_LCSSA:%.*]] = phi ptr [ [[END_0:%.*]], %[[FOR_BODY]] ], [ [[IND_ESCAPE]], %[[MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label %[[FOR_COND_CLEANUP]]
; CHECK: [[FOR_COND_CLEANUP]]:
; CHECK-NEXT: [[RESULT:%.*]] = phi ptr [ [[Y]], %[[ENTRY]] ], [ [[END_0_LCSSA]], %[[FOR_COND_CLEANUP_LOOPEXIT]] ]
; CHECK-NEXT: ret ptr [[RESULT]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[END_0]] = phi ptr [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INCDEC_PTR:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL1]], %[[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[Y]], i64 [[INDVARS_IV]]
; CHECK-NEXT: [[TMP15:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP15]], [[ALPHA]]
; CHECK-NEXT: store float [[ADD]], ptr [[ARRAYIDX]], align 4
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, ptr [[END_0]], i64 1
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label %[[FOR_COND_CLEANUP_LOOPEXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
;
entry:
%cmp3 = icmp sgt i32 %N, 0
br i1 %cmp3, label %for.body.preheader, label %for.cond.cleanup

for.body.preheader:
%wide.trip.count = zext nneg i32 %N to i64
br label %for.body

for.cond.cleanup:
%result = phi ptr [ %y, %entry ], [ %end.0, %for.body ]
ret ptr %result

for.body:
%end.0 = phi ptr [ %y, %for.body.preheader ], [ %incdec.ptr, %for.body ]
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds float, ptr %y, i64 %indvars.iv
%0 = load float, ptr %arrayidx, align 4
%add = fadd fast float %0, %alpha
store float %add, ptr %arrayidx, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
%incdec.ptr = getelementptr inbounds i8, ptr %end.0, i64 1
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
;.
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