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[VPlan] Add incoming values for all predecessor to ResumePHI (NFCI).
Follow-up as discussed when using VPInstruction::ResumePhi for all resume values (llvm#112147). This patch explicitly adds incoming values for each predecessor in VPlan. This simplifies codegen and allows transformations adjusting the predecessors of blocks with NFC modulo incoming block order in phis.
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122 files changed

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‎llvm/lib/Transforms/Vectorize/LoopVectorize.cpp‎

Lines changed: 20 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -2507,6 +2507,15 @@ void InnerLoopVectorizer::introduceCheckBlockInVPlan(BasicBlock *CheckIRBB) {
25072507
}
25082508
VPBlockUtils::connectBlocks(PreVectorPH, ScalarPH);
25092509
PreVectorPH->swapSuccessors();
2510+
2511+
// We just connected a new block to the scalar preheader. Update all
2512+
// ResumePhis by adding an incoming value for it.
2513+
for (VPRecipeBase &R : *cast<VPBasicBlock>(ScalarPH)) {
2514+
auto *ResumePhi = dyn_cast<VPInstruction>(&R);
2515+
if (!ResumePhi || ResumePhi->getOpcode() != VPInstruction::ResumePhi)
2516+
continue;
2517+
ResumePhi->addOperand(ResumePhi->getOperand(1));
2518+
}
25102519
}
25112520

25122521
void InnerLoopVectorizer::emitIterationCountCheck(BasicBlock *Bypass) {
@@ -7642,8 +7651,8 @@ static void fixReductionScalarResumeWhenVectorizingEpilog(
76427651
// over the incoming values correctly.
76437652
using namespace VPlanPatternMatch;
76447653
auto IsResumePhi = [](VPUser *U) {
7645-
return match(
7646-
U, m_VPInstruction<VPInstruction::ResumePhi>(m_VPValue(), m_VPValue()));
7654+
auto *VPI = dyn_cast<VPInstruction>(U);
7655+
return VPI && VPI->getOpcode() == VPInstruction::ResumePhi;
76477656
};
76487657
assert(count_if(EpiRedResult->users(), IsResumePhi) == 1 &&
76497658
"ResumePhi must have a single user");
@@ -7747,12 +7756,20 @@ DenseMap<const SCEV *, Value *> LoopVectorizationPlanner::executePlan(
77477756
if (VectorizingEpilogue) {
77487757
assert(!ILV.Legal->hasUncountableEarlyExit() &&
77497758
"Epilogue vectorisation not yet supported with early exits");
7759+
BasicBlock *PH = OrigLoop->getLoopPreheader();
77507760
BasicBlock *BypassBlock = ILV.getAdditionalBypassBlock();
7761+
for (auto *Pred : predecessors(PH)) {
7762+
for (PHINode &Phi : PH->phis()) {
7763+
if (Phi.getBasicBlockIndex(Pred) != -1)
7764+
continue;
7765+
Phi.addIncoming(Phi.getIncomingValueForBlock(BypassBlock), Pred);
7766+
}
7767+
}
7768+
77517769
for (VPRecipeBase &R : *MiddleVPBB) {
77527770
fixReductionScalarResumeWhenVectorizingEpilog(
77537771
&R, State, State.CFG.VPBB2IRBB[MiddleVPBB], BypassBlock);
77547772
}
7755-
BasicBlock *PH = OrigLoop->getLoopPreheader();
77567773
for (const auto &[IVPhi, _] : Legal->getInductionVars()) {
77577774
auto *Inc = cast<PHINode>(IVPhi->getIncomingValueForBlock(PH));
77587775
Value *V = ILV.getInductionAdditionalBypassValue(IVPhi);

‎llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp‎

Lines changed: 5 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -685,20 +685,13 @@ Value *VPInstruction::generate(VPTransformState &State) {
685685
return Builder.CreatePtrAdd(Ptr, Addend, Name, getGEPNoWrapFlags());
686686
}
687687
case VPInstruction::ResumePhi: {
688-
Value *IncomingFromVPlanPred =
689-
State.get(getOperand(0), /* IsScalar */ true);
690-
Value *IncomingFromOtherPreds =
691-
State.get(getOperand(1), /* IsScalar */ true);
692688
auto *NewPhi =
693689
Builder.CreatePHI(State.TypeAnalysis.inferScalarType(this), 2, Name);
694-
BasicBlock *VPlanPred =
695-
State.CFG
696-
.VPBB2IRBB[cast<VPBasicBlock>(getParent()->getPredecessors()[0])];
697-
NewPhi->addIncoming(IncomingFromVPlanPred, VPlanPred);
698-
for (auto *OtherPred : predecessors(Builder.GetInsertBlock())) {
699-
if (OtherPred == VPlanPred)
700-
continue;
701-
NewPhi->addIncoming(IncomingFromOtherPreds, OtherPred);
690+
for (const auto &[IncVPV, PredVPBB] :
691+
zip(operands(), getParent()->getPredecessors())) {
692+
Value *IncV = State.get(IncVPV, /* IsScalar */ true);
693+
BasicBlock *PredBB = State.CFG.VPBB2IRBB.at(cast<VPBasicBlock>(PredVPBB));
694+
NewPhi->addIncoming(IncV, PredBB);
702695
}
703696
return NewPhi;
704697
}

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

Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -369,7 +369,7 @@ define void @latch_branch_cost(ptr %dst) {
369369
; DEFAULT: vec.epilog.middle.block:
370370
; DEFAULT-NEXT: br i1 true, label [[FOR_END]], label [[SCALAR_PH]]
371371
; DEFAULT: vec.epilog.scalar.ph:
372-
; DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 100, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ 96, [[VEC_EPILOG_ITER_CHECK]] ]
372+
; DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 100, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 96, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
373373
; DEFAULT-NEXT: br label [[FOR_BODY:%.*]]
374374
; DEFAULT: loop:
375375
; DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
@@ -588,7 +588,7 @@ define i32 @header_mask_and_invariant_compare(ptr %A, ptr %B, ptr %C, ptr %D, pt
588588
; DEFAULT-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]
589589
; DEFAULT-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
590590
; DEFAULT: scalar.ph:
591-
; DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[ENTRY:%.*]] ]
591+
; DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_MEMCHECK]] ]
592592
; DEFAULT-NEXT: br label [[LOOP_HEADER:%.*]]
593593
; DEFAULT: loop.header:
594594
; DEFAULT-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
@@ -715,7 +715,7 @@ define i32 @header_mask_and_invariant_compare(ptr %A, ptr %B, ptr %C, ptr %D, pt
715715
; PRED: middle.block:
716716
; PRED-NEXT: br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]]
717717
; PRED: scalar.ph:
718-
; PRED-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[ENTRY:%.*]] ]
718+
; PRED-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_MEMCHECK]] ]
719719
; PRED-NEXT: br label [[LOOP_HEADER:%.*]]
720720
; PRED: loop.header:
721721
; PRED-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
@@ -1301,7 +1301,7 @@ define void @test_conditional_interleave_group (ptr noalias %src.1, ptr noalias
13011301
; DEFAULT-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]
13021302
; DEFAULT-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
13031303
; DEFAULT: scalar.ph:
1304-
; DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ENTRY:%.*]] ]
1304+
; DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
13051305
; DEFAULT-NEXT: br label [[LOOP_HEADER:%.*]]
13061306
; DEFAULT: loop.header:
13071307
; DEFAULT-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
@@ -1523,7 +1523,7 @@ define void @test_conditional_interleave_group (ptr noalias %src.1, ptr noalias
15231523
; PRED: middle.block:
15241524
; PRED-NEXT: br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]]
15251525
; PRED: scalar.ph:
1526-
; PRED-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ENTRY:%.*]] ]
1526+
; PRED-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
15271527
; PRED-NEXT: br label [[LOOP_HEADER:%.*]]
15281528
; PRED: loop.header:
15291529
; PRED-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]

‎llvm/test/Transforms/LoopVectorize/AArch64/deterministic-type-shrinkage.ll‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -83,7 +83,7 @@ define void @test_pr25490(i32 %n, ptr noalias nocapture %a, ptr noalias nocaptur
8383
; CHECK-NEXT: [[CMP_N11:%.*]] = icmp eq i64 [[N_VEC5]], [[TMP0]]
8484
; CHECK-NEXT: br i1 [[CMP_N11]], label [[FOR_COND_CLEANUP_LOOPEXIT]], label [[VEC_EPILOG_SCALAR_PH]]
8585
; CHECK: vec.epilog.scalar.ph:
86-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC5]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ]
86+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC5]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK]] ]
8787
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
8888
; CHECK: for.cond.cleanup.loopexit:
8989
; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]

‎llvm/test/Transforms/LoopVectorize/AArch64/divs-with-scalable-vfs.ll‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -52,7 +52,7 @@ define void @sdiv_feeding_gep(ptr %dst, i32 %x, i64 %M, i64 %conv6, i64 %N) {
5252
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
5353
; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
5454
; CHECK: [[SCALAR_PH]]:
55-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[VECTOR_SCEVCHECK]] ], [ 0, %[[ENTRY]] ]
55+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ], [ 0, %[[VECTOR_SCEVCHECK]] ]
5656
; CHECK-NEXT: br label %[[LOOP:.*]]
5757
; CHECK: [[LOOP]]:
5858
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
@@ -162,7 +162,7 @@ define void @sdiv_feeding_gep_predicated(ptr %dst, i32 %x, i64 %M, i64 %conv6, i
162162
; CHECK: [[MIDDLE_BLOCK]]:
163163
; CHECK-NEXT: br i1 true, label %[[EXIT:.*]], label %[[SCALAR_PH]]
164164
; CHECK: [[SCALAR_PH]]:
165-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[VECTOR_SCEVCHECK]] ], [ 0, %[[ENTRY]] ]
165+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ], [ 0, %[[VECTOR_SCEVCHECK]] ]
166166
; CHECK-NEXT: br label %[[LOOP:.*]]
167167
; CHECK: [[LOOP]]:
168168
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP_LATCH:.*]] ]
@@ -289,7 +289,7 @@ define void @udiv_urem_feeding_gep(i64 %x, ptr %dst, i64 %N) {
289289
; CHECK: [[MIDDLE_BLOCK]]:
290290
; CHECK-NEXT: br i1 true, label %[[EXIT:.*]], label %[[SCALAR_PH]]
291291
; CHECK: [[SCALAR_PH]]:
292-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[VECTOR_SCEVCHECK]] ], [ 0, %[[ENTRY]] ]
292+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ], [ 0, %[[VECTOR_SCEVCHECK]] ]
293293
; CHECK-NEXT: br label %[[LOOP:.*]]
294294
; CHECK: [[LOOP]]:
295295
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]

‎llvm/test/Transforms/LoopVectorize/AArch64/epilog-vectorization-factors.ll‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -85,7 +85,7 @@ define void @add_i8(ptr noalias nocapture noundef writeonly %A, ptr nocapture no
8585
; CHECK-NEXT: [[CMP_N15:%.*]] = icmp eq i64 [[ITERATIONS]], [[N_VEC10]]
8686
; CHECK-NEXT: br i1 [[CMP_N15]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
8787
; CHECK: vec.epilog.scalar.ph:
88-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC10]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ]
88+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC10]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
8989
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
9090
; CHECK: for.body:
9191
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
@@ -203,7 +203,7 @@ define void @add_i16(ptr noalias nocapture noundef writeonly %A, ptr nocapture n
203203
; CHECK-NEXT: [[CMP_N15:%.*]] = icmp eq i64 [[ITERATIONS]], [[N_VEC10]]
204204
; CHECK-NEXT: br i1 [[CMP_N15]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
205205
; CHECK: vec.epilog.scalar.ph:
206-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC10]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ]
206+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC10]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
207207
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
208208
; CHECK: for.body:
209209
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
@@ -321,7 +321,7 @@ define void @add_i32(ptr noalias nocapture noundef writeonly %A, ptr nocapture n
321321
; CHECK-NEXT: [[CMP_N15:%.*]] = icmp eq i64 [[ITERATIONS]], [[N_VEC10]]
322322
; CHECK-NEXT: br i1 [[CMP_N15]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
323323
; CHECK: vec.epilog.scalar.ph:
324-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC10]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ]
324+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC10]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
325325
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
326326
; CHECK: for.body:
327327
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]

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

Lines changed: 8 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -73,8 +73,8 @@ define void @test_widen_ptr_induction(ptr %ptr.start.1) {
7373
; CHECK: vec.epilog.middle.block:
7474
; CHECK-NEXT: br i1 false, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
7575
; CHECK: vec.epilog.scalar.ph:
76-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 10000, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ 10000, [[VEC_EPILOG_ITER_CHECK]] ]
77-
; CHECK-NEXT: [[BC_RESUME_VAL5:%.*]] = phi ptr [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[PTR_START_1]], [[ITER_CHECK]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ]
76+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 10000, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 10000, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
77+
; CHECK-NEXT: [[BC_RESUME_VAL5:%.*]] = phi ptr [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[PTR_START_1]], [[ITER_CHECK]] ]
7878
; CHECK-NEXT: br label [[LOOP:%.*]]
7979
; CHECK: loop:
8080
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
@@ -165,7 +165,7 @@ define void @test_widen_induction(ptr %A, i64 %N) {
165165
; CHECK-NEXT: [[CMP_N9:%.*]] = icmp eq i64 [[N]], [[N_VEC3]]
166166
; CHECK-NEXT: br i1 [[CMP_N9]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
167167
; CHECK: vec.epilog.scalar.ph:
168-
; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ]
168+
; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
169169
; CHECK-NEXT: br label [[LOOP:%.*]]
170170
; CHECK: loop:
171171
; CHECK-NEXT: [[IV_1:%.*]] = phi i64 [ [[BC_RESUME_VAL4]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_1_NEXT:%.*]], [[LOOP]] ]
@@ -258,7 +258,7 @@ define void @test_widen_induction_variable_start(ptr %A, i64 %N, i64 %start) {
258258
; CHECK-NEXT: [[CMP_N15:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC3]]
259259
; CHECK-NEXT: br i1 [[CMP_N15]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
260260
; CHECK: vec.epilog.scalar.ph:
261-
; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi i64 [ [[IND_END4]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[START]], [[ITER_CHECK:%.*]] ], [ [[IND_END5]], [[VEC_EPILOG_ITER_CHECK]] ]
261+
; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi i64 [ [[IND_END4]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END5]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[START]], [[ITER_CHECK:%.*]] ]
262262
; CHECK-NEXT: br label [[LOOP:%.*]]
263263
; CHECK: loop:
264264
; CHECK-NEXT: [[IV_1:%.*]] = phi i64 [ [[BC_RESUME_VAL6]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_1_NEXT:%.*]], [[LOOP]] ]
@@ -344,8 +344,8 @@ define void @test_widen_induction_step_2(ptr %A, i64 %N, i32 %step) {
344344
; CHECK-NEXT: [[CMP_N11:%.*]] = icmp eq i64 [[N]], [[IND_END]]
345345
; CHECK-NEXT: br i1 [[CMP_N11]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
346346
; CHECK: vec.epilog.scalar.ph:
347-
; CHECK-NEXT: [[BC_RESUME_VAL5:%.*]] = phi i64 [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ]
348-
; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi i64 [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ]
347+
; CHECK-NEXT: [[BC_RESUME_VAL5:%.*]] = phi i64 [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
348+
; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi i64 [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK]] ]
349349
; CHECK-NEXT: br label [[LOOP:%.*]]
350350
; CHECK: loop:
351351
; CHECK-NEXT: [[IV_1:%.*]] = phi i64 [ [[BC_RESUME_VAL5]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_1_NEXT:%.*]], [[LOOP]] ]
@@ -431,7 +431,7 @@ define void @test_widen_extended_induction(ptr %dst) {
431431
; CHECK: vec.epilog.middle.block:
432432
; CHECK-NEXT: br i1 true, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
433433
; CHECK: vec.epilog.scalar.ph:
434-
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i8 [ 16, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ 16, [[VEC_EPILOG_ITER_CHECK]] ]
434+
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i8 [ 16, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 16, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
435435
; CHECK-NEXT: br label [[LOOP:%.*]]
436436
; CHECK: loop:
437437
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[BC_RESUME_VAL1]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
@@ -509,7 +509,7 @@ define void @test_widen_truncated_induction(ptr %A) {
509509
; CHECK: vec.epilog.middle.block:
510510
; CHECK-NEXT: br i1 true, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
511511
; CHECK: vec.epilog.scalar.ph:
512-
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i64 [ 10000, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ 10000, [[VEC_EPILOG_ITER_CHECK]] ]
512+
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i64 [ 10000, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 10000, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
513513
; CHECK-NEXT: br label [[LOOP:%.*]]
514514
; CHECK: loop:
515515
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL1]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]

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

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -116,8 +116,8 @@ define void @test_iv_cost(ptr %ptr.start, i8 %a, i64 %b) {
116116
; CHECK-NEXT: [[CMP_N11:%.*]] = icmp eq i64 [[START]], [[N_VEC3]]
117117
; CHECK-NEXT: br i1 [[CMP_N11]], label %[[EXIT_LOOPEXIT]], label %[[VEC_EPILOG_SCALAR_PH]]
118118
; CHECK: [[VEC_EPILOG_SCALAR_PH]]:
119-
; 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_VAL9:%.*]] = phi ptr [ [[IND_END5]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[PTR_START]], %[[ITER_CHECK]] ], [ [[IND_END2]], %[[VEC_EPILOG_ITER_CHECK]] ]
119+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END1]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END]], %[[VEC_EPILOG_ITER_CHECK]] ], [ [[START]], %[[ITER_CHECK]] ]
120+
; CHECK-NEXT: [[BC_RESUME_VAL9:%.*]] = phi ptr [ [[IND_END5]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END2]], %[[VEC_EPILOG_ITER_CHECK]] ], [ [[PTR_START]], %[[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]] ]
@@ -284,7 +284,7 @@ define void @test_exit_branch_cost(ptr %dst, ptr noalias %x.ptr, ptr noalias %y.
284284
; CHECK: [[MIDDLE_BLOCK]]:
285285
; CHECK-NEXT: br i1 false, label %[[EXIT:.*]], label %[[SCALAR_PH]]
286286
; CHECK: [[SCALAR_PH]]:
287-
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 64, %[[MIDDLE_BLOCK]] ], [ 0, %[[VECTOR_MEMCHECK]] ], [ 0, %[[ENTRY]] ]
287+
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 64, %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ], [ 0, %[[VECTOR_MEMCHECK]] ]
288288
; CHECK-NEXT: br label %[[LOOP_HEADER:.*]]
289289
; CHECK: [[LOOP_HEADER]]:
290290
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], %[[LOOP_LATCH:.*]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]

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