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Automerge: [VPlan] Compute induction end values in VPlan. (#112145)
Use createDerivedIV to compute IV end values directly in VPlan, instead of creating them up-front. This allows updating IV users outside the loop as follow-up. Depends on llvm/llvm-project#110004 and llvm/llvm-project#109975. PR: llvm/llvm-project#112145
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‎llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h‎

Lines changed: 6 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -231,12 +231,15 @@ class VPBuilder {
231231
new VPInstruction(Ptr, Offset, GEPNoWrapFlags::inBounds(), DL, Name));
232232
}
233233

234+
/// Convert the input value \p Current to the corresponding value of an
235+
/// induction with \p Start and \p Step values, using \p Start + \p Current *
236+
/// \p Step.
234237
VPDerivedIVRecipe *createDerivedIV(InductionDescriptor::InductionKind Kind,
235238
FPMathOperator *FPBinOp, VPValue *Start,
236-
VPCanonicalIVPHIRecipe *CanonicalIV,
237-
VPValue *Step, const Twine &Name = "") {
239+
VPValue *Current, VPValue *Step,
240+
const Twine &Name = "") {
238241
return tryInsertInstruction(
239-
new VPDerivedIVRecipe(Kind, FPBinOp, Start, CanonicalIV, Step, Name));
242+
new VPDerivedIVRecipe(Kind, FPBinOp, Start, Current, Step, Name));
240243
}
241244

242245
VPScalarCastRecipe *createScalarCast(Instruction::CastOps Opcode, VPValue *Op,

‎llvm/lib/Transforms/Vectorize/LoopVectorize.cpp‎

Lines changed: 177 additions & 155 deletions
Large diffs are not rendered by default.

‎llvm/test/Transforms/LoopVectorize/AArch64/clamped-trip-count.ll‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -13,9 +13,9 @@ define void @clamped_tc_8(ptr nocapture %dst, i32 %n, i64 %val) vscale_range(1,1
1313
; CHECK-NEXT: [[N_RND_UP:%.*]] = add i64 8, [[TMP4]]
1414
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], [[TMP1]]
1515
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
16-
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[DST]], i64 [[N_VEC]]
1716
; CHECK-NEXT: [[TMP5:%.*]] = call i64 @llvm.vscale.i64()
1817
; CHECK-NEXT: [[TMP6:%.*]] = mul i64 [[TMP5]], 8
18+
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[DST]], i64 [[N_VEC]]
1919
; CHECK-NEXT: [[ACTIVE_LANE_MASK_ENTRY:%.*]] = call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 8)
2020
; CHECK-NEXT: [[TMP8:%.*]] = call <vscale x 8 x i64> @llvm.stepvector.nxv8i64()
2121
; CHECK-NEXT: [[TMP7:%.*]] = mul <vscale x 8 x i64> [[TMP8]], splat (i64 1)
@@ -99,9 +99,9 @@ define void @clamped_tc_max_8(ptr nocapture %dst, i32 %n, i64 %val) vscale_range
9999
; CHECK-NEXT: [[N_RND_UP:%.*]] = add i64 [[WIDE_TRIP_COUNT]], [[TMP4]]
100100
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], [[TMP1]]
101101
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
102-
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[DST]], i64 [[N_VEC]]
103102
; CHECK-NEXT: [[TMP5:%.*]] = call i64 @llvm.vscale.i64()
104103
; CHECK-NEXT: [[TMP6:%.*]] = mul i64 [[TMP5]], 8
104+
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[DST]], i64 [[N_VEC]]
105105
; CHECK-NEXT: [[ACTIVE_LANE_MASK_ENTRY:%.*]] = call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 [[WIDE_TRIP_COUNT]])
106106
; CHECK-NEXT: [[TMP8:%.*]] = call <vscale x 8 x i64> @llvm.stepvector.nxv8i64()
107107
; CHECK-NEXT: [[TMP7:%.*]] = mul <vscale x 8 x i64> [[TMP8]], splat (i64 1)

‎llvm/test/Transforms/LoopVectorize/AArch64/conditional-branches-cost.ll‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -821,11 +821,11 @@ define void @multiple_exit_conditions(ptr %src, ptr noalias %dst) #1 {
821821
; PRED-NEXT: [[N_RND_UP:%.*]] = add i64 257, [[TMP2]]
822822
; PRED-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], [[TMP1]]
823823
; PRED-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
824+
; PRED-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
825+
; PRED-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 2
824826
; PRED-NEXT: [[TMP3:%.*]] = mul i64 [[N_VEC]], 8
825827
; PRED-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[DST]], i64 [[TMP3]]
826828
; PRED-NEXT: [[IND_END1:%.*]] = mul i64 [[N_VEC]], 2
827-
; PRED-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
828-
; PRED-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 2
829829
; PRED-NEXT: [[TMP6:%.*]] = call i64 @llvm.vscale.i64()
830830
; PRED-NEXT: [[TMP7:%.*]] = mul i64 [[TMP6]], 2
831831
; PRED-NEXT: [[TMP8:%.*]] = sub i64 257, [[TMP7]]

‎llvm/test/Transforms/LoopVectorize/AArch64/epilog-vectorization-widen-inductions.ll‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -233,8 +233,8 @@ define void @test_widen_induction_variable_start(ptr %A, i64 %N, i64 %start) {
233233
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 2
234234
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
235235
; CHECK: vec.epilog.ph:
236-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[START]], [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
237236
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
237+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[START]], [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
238238
; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[TMP0]], 2
239239
; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 [[TMP0]], [[N_MOD_VF2]]
240240
; CHECK-NEXT: [[IND_END4:%.*]] = add i64 [[START]], [[N_VEC3]]
@@ -409,8 +409,8 @@ define void @test_widen_extended_induction(ptr %dst) {
409409
; CHECK: vec.epilog.iter.check:
410410
; CHECK-NEXT: br i1 true, label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
411411
; CHECK: vec.epilog.ph:
412-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i8 [ 16, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
413412
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i32 [ 10000, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
413+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i8 [ 16, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
414414
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <2 x i8> poison, i8 [[BC_RESUME_VAL]], i64 0
415415
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <2 x i8> [[DOTSPLATINSERT]], <2 x i8> poison, <2 x i32> zeroinitializer
416416
; CHECK-NEXT: [[INDUCTION:%.*]] = add <2 x i8> [[DOTSPLAT]], <i8 0, i8 1>

‎llvm/test/Transforms/LoopVectorize/AArch64/fixed-order-recurrence.ll‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -48,8 +48,8 @@ define void @firstorderrec(ptr nocapture noundef readonly %x, ptr noalias nocapt
4848
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]
4949
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[SCALAR_PH]]
5050
; CHECK: scalar.ph:
51-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 1, [[FOR_BODY_PREHEADER]] ]
5251
; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i8 [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ], [ [[DOTPRE]], [[FOR_BODY_PREHEADER]] ]
52+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 1, [[FOR_BODY_PREHEADER]] ]
5353
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
5454
; CHECK: for.cond.cleanup.loopexit:
5555
; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
@@ -154,10 +154,10 @@ define void @thirdorderrec(ptr nocapture noundef readonly %x, ptr noalias nocapt
154154
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]
155155
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[SCALAR_PH]]
156156
; CHECK: scalar.ph:
157-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 3, [[FOR_BODY_PREHEADER]] ]
158157
; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i8 [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ], [ [[DOTPRE45]], [[FOR_BODY_PREHEADER]] ]
159158
; CHECK-NEXT: [[SCALAR_RECUR_INIT7:%.*]] = phi i8 [ [[VECTOR_RECUR_EXTRACT6]], [[MIDDLE_BLOCK]] ], [ [[DOTPRE44]], [[FOR_BODY_PREHEADER]] ]
160159
; CHECK-NEXT: [[SCALAR_RECUR_INIT10:%.*]] = phi i8 [ [[VECTOR_RECUR_EXTRACT9]], [[MIDDLE_BLOCK]] ], [ [[DOTPRE]], [[FOR_BODY_PREHEADER]] ]
160+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 3, [[FOR_BODY_PREHEADER]] ]
161161
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
162162
; CHECK: for.cond.cleanup.loopexit:
163163
; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]

‎llvm/test/Transforms/LoopVectorize/AArch64/force-target-instruction-cost.ll‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -91,8 +91,8 @@ define void @test_iv_cost(ptr %ptr.start, i8 %a, i64 %b) {
9191
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[START]], [[N_VEC]]
9292
; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT_LOOPEXIT:.*]], label %[[VEC_EPILOG_ITER_CHECK:.*]]
9393
; CHECK: [[VEC_EPILOG_ITER_CHECK]]:
94-
; CHECK-NEXT: [[IND_END6:%.*]] = getelementptr i8, ptr [[PTR_START]], i64 [[N_VEC]]
9594
; CHECK-NEXT: [[IND_END:%.*]] = sub i64 [[START]], [[N_VEC]]
95+
; CHECK-NEXT: [[IND_END2:%.*]] = getelementptr i8, ptr [[PTR_START]], i64 [[N_VEC]]
9696
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[START]], [[N_VEC]]
9797
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4
9898
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label %[[VEC_EPILOG_SCALAR_PH]], label %[[VEC_EPILOG_PH]]
@@ -117,11 +117,11 @@ define void @test_iv_cost(ptr %ptr.start, i8 %a, i64 %b) {
117117
; CHECK-NEXT: br i1 [[CMP_N11]], label %[[EXIT_LOOPEXIT]], label %[[VEC_EPILOG_SCALAR_PH]]
118118
; CHECK: [[VEC_EPILOG_SCALAR_PH]]:
119119
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END1]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[START]], %[[ITER_CHECK]] ], [ [[IND_END]], %[[VEC_EPILOG_ITER_CHECK]] ]
120-
; CHECK-NEXT: [[BC_RESUME_VAL11:%.*]] = phi ptr [ [[IND_END5]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[PTR_START]], %[[ITER_CHECK]] ], [ [[IND_END6]], %[[VEC_EPILOG_ITER_CHECK]] ]
120+
; CHECK-NEXT: [[BC_RESUME_VAL9:%.*]] = phi ptr [ [[IND_END5]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[PTR_START]], %[[ITER_CHECK]] ], [ [[IND_END2]], %[[VEC_EPILOG_ITER_CHECK]] ]
121121
; CHECK-NEXT: br label %[[LOOP:.*]]
122122
; CHECK: [[LOOP]]:
123123
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL]], %[[VEC_EPILOG_SCALAR_PH]] ]
124-
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[PTR_IV_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL11]], %[[VEC_EPILOG_SCALAR_PH]] ]
124+
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[PTR_IV_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL9]], %[[VEC_EPILOG_SCALAR_PH]] ]
125125
; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], -1
126126
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr i8, ptr [[PTR_IV]], i64 1
127127
; CHECK-NEXT: store i8 0, ptr [[PTR_IV]], align 1

‎llvm/test/Transforms/LoopVectorize/AArch64/induction-costs-sve.ll‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -819,8 +819,8 @@ define void @exit_cond_zext_iv(ptr %dst, i64 %N) {
819819
; PRED-NEXT: [[N_RND_UP:%.*]] = add i64 [[UMAX1]], 1
820820
; PRED-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], 2
821821
; PRED-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
822-
; PRED-NEXT: [[IND_END:%.*]] = trunc i64 [[N_VEC]] to i32
823822
; PRED-NEXT: [[TRIP_COUNT_MINUS_1:%.*]] = sub i64 [[UMAX1]], 1
823+
; PRED-NEXT: [[IND_END:%.*]] = trunc i64 [[N_VEC]] to i32
824824
; PRED-NEXT: [[BROADCAST_SPLATINSERT2:%.*]] = insertelement <2 x i64> poison, i64 [[TRIP_COUNT_MINUS_1]], i64 0
825825
; PRED-NEXT: [[BROADCAST_SPLAT3:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT2]], <2 x i64> poison, <2 x i32> zeroinitializer
826826
; PRED-NEXT: br label [[VECTOR_BODY:%.*]]

‎llvm/test/Transforms/LoopVectorize/AArch64/induction-costs.ll‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -333,10 +333,10 @@ define i64 @test_ptr_ivs_and_widened_ivs(ptr %src, i32 %N) {
333333
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
334334
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
335335
; CHECK: scalar.ph:
336-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[SRC]], [[ENTRY:%.*]] ]
336+
; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i64 [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
337+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[SRC]], [[ENTRY]] ]
337338
; CHECK-NEXT: [[BC_RESUME_VAL2:%.*]] = phi i32 [ [[IND_END1]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
338339
; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi i32 [ [[IND_END3]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
339-
; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i64 [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
340340
; CHECK-NEXT: br label [[LOOP:%.*]]
341341
; CHECK: loop:
342342
; CHECK-NEXT: [[P:%.*]] = phi i64 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[SHL:%.*]], [[LOOP]] ]

‎llvm/test/Transforms/LoopVectorize/AArch64/intrinsiccost.ll‎

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -50,12 +50,12 @@ define void @saddsat(ptr nocapture readonly %pSrc, i16 signext %offset, ptr noca
5050
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[TMP0]]
5151
; CHECK-NEXT: br i1 [[CMP_N]], label [[WHILE_END]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
5252
; CHECK: vec.epilog.iter.check:
53+
; CHECK-NEXT: [[DOTCAST1:%.*]] = trunc nuw i64 [[N_VEC]] to i32
54+
; CHECK-NEXT: [[IND_END8:%.*]] = sub i32 [[BLOCKSIZE]], [[DOTCAST1]]
5355
; CHECK-NEXT: [[TMP6:%.*]] = shl nuw nsw i64 [[N_VEC]], 1
54-
; CHECK-NEXT: [[IND_END13:%.*]] = getelementptr i8, ptr [[PDST]], i64 [[TMP6]]
56+
; CHECK-NEXT: [[IND_END10:%.*]] = getelementptr i8, ptr [[PSRC]], i64 [[TMP6]]
5557
; CHECK-NEXT: [[TMP7:%.*]] = shl nuw nsw i64 [[N_VEC]], 1
56-
; CHECK-NEXT: [[IND_END10:%.*]] = getelementptr i8, ptr [[PSRC]], i64 [[TMP7]]
57-
; CHECK-NEXT: [[DOTCAST7:%.*]] = trunc nuw i64 [[N_VEC]] to i32
58-
; CHECK-NEXT: [[IND_END8:%.*]] = sub i32 [[BLOCKSIZE]], [[DOTCAST7]]
58+
; CHECK-NEXT: [[IND_END13:%.*]] = getelementptr i8, ptr [[PDST]], i64 [[TMP7]]
5959
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = and i64 [[TMP0]], 12
6060
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp eq i64 [[N_VEC_REMAINING]], 0
6161
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
@@ -171,10 +171,10 @@ define void @umin(ptr nocapture readonly %pSrc, i8 signext %offset, ptr nocaptur
171171
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[TMP0]]
172172
; CHECK-NEXT: br i1 [[CMP_N]], label [[WHILE_END]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
173173
; CHECK: vec.epilog.iter.check:
174-
; CHECK-NEXT: [[IND_END12:%.*]] = getelementptr i8, ptr [[PDST]], i64 [[N_VEC]]
175-
; CHECK-NEXT: [[IND_END9:%.*]] = getelementptr i8, ptr [[PSRC]], i64 [[N_VEC]]
176174
; CHECK-NEXT: [[DOTCAST6:%.*]] = trunc nuw i64 [[N_VEC]] to i32
177175
; CHECK-NEXT: [[IND_END7:%.*]] = sub i32 [[BLOCKSIZE]], [[DOTCAST6]]
176+
; CHECK-NEXT: [[IND_END9:%.*]] = getelementptr i8, ptr [[PSRC]], i64 [[N_VEC]]
177+
; CHECK-NEXT: [[IND_END12:%.*]] = getelementptr i8, ptr [[PDST]], i64 [[N_VEC]]
178178
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = and i64 [[TMP0]], 24
179179
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp eq i64 [[N_VEC_REMAINING]], 0
180180
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]

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