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[RISCV][TTI] Implement getPartialReductionCost for the vqdotq cases #140974

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[RISCV][TTI] Implement getPartialReductionCost for the vqdotq cases #140974

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507aa5e
[RISCV][TTI] Implement getPartialReductionCost for the vqdotq cases
preames May 21, 2025
cb998d1
Merge branch 'main' into pr-riscv-tti-getPartialReductionCost
preames May 22, 2025
7d4d4a6
Guard zve32x
preames May 22, 2025
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23 changes: 23 additions & 0 deletions llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -294,6 +294,29 @@ RISCVTTIImpl::getPopcntSupport(unsigned TyWidth) const {
: TTI::PSK_Software;
}

InstructionCost RISCVTTIImpl::getPartialReductionCost(
unsigned Opcode, Type *InputTypeA, Type *InputTypeB, Type *AccumType,
ElementCount VF, TTI::PartialReductionExtendKind OpAExtend,
TTI::PartialReductionExtendKind OpBExtend,
std::optional<unsigned> BinOp) const {

// zve32x is broken for partial_reduce_umla, but let's make sure we
// don't generate them.
if (!ST->hasStdExtZvqdotq() || ST->getELen() < 64 ||
Opcode != Instruction::Add || !BinOp || *BinOp != Instruction::Mul ||
InputTypeA != InputTypeB || !InputTypeA->isIntegerTy(8) ||
OpAExtend != OpBExtend || !AccumType->isIntegerTy(32) ||
!VF.isKnownMultipleOf(4) || !VF.isScalable())
return InstructionCost::getInvalid();

Type *Tp = VectorType::get(AccumType, VF);
std::pair<InstructionCost, MVT> LT = getTypeLegalizationCost(Tp);
// Note: Asuming all vqdot* variants are equal cost
// TODO: Thread CostKind through this API
return LT.first * getRISCVInstructionCost(RISCV::VQDOT_VV, LT.second,
TTI::TCK_RecipThroughput);
}

bool RISCVTTIImpl::shouldExpandReduction(const IntrinsicInst *II) const {
// Currently, the ExpandReductions pass can't expand scalable-vector
// reductions, but we still request expansion as RVV doesn't support certain
Expand Down
7 changes: 7 additions & 0 deletions llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
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Expand Up @@ -107,6 +107,13 @@ class RISCVTTIImpl : public BasicTTIImplBase<RISCVTTIImpl> {
TargetTransformInfo::PopcntSupportKind
getPopcntSupport(unsigned TyWidth) const override;

InstructionCost
getPartialReductionCost(unsigned Opcode, Type *InputTypeA, Type *InputTypeB,
Type *AccumType, ElementCount VF,
TTI::PartialReductionExtendKind OpAExtend,
TTI::PartialReductionExtendKind OpBExtend,
std::optional<unsigned> BinOp) const override;

bool shouldExpandReduction(const IntrinsicInst *II) const override;
bool supportsScalableVectors() const override {
return ST->hasVInstructions();
Expand Down
223 changes: 147 additions & 76 deletions llvm/test/Transforms/LoopVectorize/RISCV/partial-reduce-dot-product.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -5,42 +5,79 @@
target triple = "riscv64-none-unknown-elf"

define i32 @vqdot(ptr %a, ptr %b) #0 {
; CHECK-LABEL: define i32 @vqdot(
; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP13:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP6]], i32 0
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP7]], align 1
; CHECK-NEXT: [[TMP8:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP9]], i32 0
; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-NEXT: [[TMP11:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-NEXT: [[TMP12:%.*]] = mul <vscale x 4 x i32> [[TMP11]], [[TMP8]]
; CHECK-NEXT: [[TMP13]] = add <vscale x 4 x i32> [[TMP12]], [[VEC_PHI]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; 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: [[TMP15:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP13]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; V-LABEL: define i32 @vqdot(
; V-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0:[0-9]+]] {
; V-NEXT: entry:
; V-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; V-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; V-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; V-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; V: vector.ph:
; V-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; V-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; V-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; V-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; V-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; V-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; V-NEXT: br label [[VECTOR_BODY:%.*]]
; V: vector.body:
; V-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; V-NEXT: [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP13:%.*]], [[VECTOR_BODY]] ]
; V-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[A]], i64 [[INDEX]]
; V-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP6]], i32 0
; V-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP7]], align 1
; V-NEXT: [[TMP8:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; V-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[B]], i64 [[INDEX]]
; V-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP9]], i32 0
; V-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; V-NEXT: [[TMP11:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; V-NEXT: [[TMP12:%.*]] = mul <vscale x 4 x i32> [[TMP11]], [[TMP8]]
; V-NEXT: [[TMP13]] = add <vscale x 4 x i32> [[TMP12]], [[VEC_PHI]]
; V-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; V-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; V-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; V: middle.block:
; V-NEXT: [[TMP15:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP13]])
; V-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; V-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]]
; V: scalar.ph:
;
; ZVQDOTQ-LABEL: define i32 @vqdot(
; ZVQDOTQ-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0:[0-9]+]] {
; ZVQDOTQ-NEXT: entry:
; ZVQDOTQ-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; ZVQDOTQ-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; ZVQDOTQ-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; ZVQDOTQ-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; ZVQDOTQ: vector.ph:
; ZVQDOTQ-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; ZVQDOTQ-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; ZVQDOTQ-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; ZVQDOTQ-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; ZVQDOTQ-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; ZVQDOTQ-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; ZVQDOTQ-NEXT: br label [[VECTOR_BODY:%.*]]
; ZVQDOTQ: vector.body:
; ZVQDOTQ-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; ZVQDOTQ-NEXT: [[VEC_PHI:%.*]] = phi <vscale x 1 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE:%.*]], [[VECTOR_BODY]] ]
; ZVQDOTQ-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[A]], i64 [[INDEX]]
; ZVQDOTQ-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP6]], i32 0
; ZVQDOTQ-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP7]], align 1
; ZVQDOTQ-NEXT: [[TMP8:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; ZVQDOTQ-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[B]], i64 [[INDEX]]
; ZVQDOTQ-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP9]], i32 0
; ZVQDOTQ-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; ZVQDOTQ-NEXT: [[TMP11:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; ZVQDOTQ-NEXT: [[TMP12:%.*]] = mul <vscale x 4 x i32> [[TMP11]], [[TMP8]]
; ZVQDOTQ-NEXT: [[PARTIAL_REDUCE]] = call <vscale x 1 x i32> @llvm.experimental.vector.partial.reduce.add.nxv1i32.nxv4i32(<vscale x 1 x i32> [[VEC_PHI]], <vscale x 4 x i32> [[TMP12]])
; ZVQDOTQ-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; ZVQDOTQ-NEXT: [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; ZVQDOTQ-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; ZVQDOTQ: middle.block:
; ZVQDOTQ-NEXT: [[TMP14:%.*]] = call i32 @llvm.vector.reduce.add.nxv1i32(<vscale x 1 x i32> [[PARTIAL_REDUCE]])
; ZVQDOTQ-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; ZVQDOTQ-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]]
; ZVQDOTQ: scalar.ph:
;
entry:
br label %for.body
Expand All @@ -66,42 +103,79 @@ for.exit: ; preds = %for.body


define i32 @vqdotu(ptr %a, ptr %b) #0 {
; CHECK-LABEL: define i32 @vqdotu(
; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP13:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP6]], i32 0
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP7]], align 1
; CHECK-NEXT: [[TMP8:%.*]] = zext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP9]], i32 0
; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-NEXT: [[TMP11:%.*]] = zext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-NEXT: [[TMP12:%.*]] = mul <vscale x 4 x i32> [[TMP11]], [[TMP8]]
; CHECK-NEXT: [[TMP13]] = add <vscale x 4 x i32> [[TMP12]], [[VEC_PHI]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP15:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP13]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; V-LABEL: define i32 @vqdotu(
; V-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0]] {
; V-NEXT: entry:
; V-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; V-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; V-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; V-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; V: vector.ph:
; V-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; V-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; V-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; V-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; V-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; V-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; V-NEXT: br label [[VECTOR_BODY:%.*]]
; V: vector.body:
; V-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; V-NEXT: [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP13:%.*]], [[VECTOR_BODY]] ]
; V-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[A]], i64 [[INDEX]]
; V-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP6]], i32 0
; V-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP7]], align 1
; V-NEXT: [[TMP8:%.*]] = zext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; V-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[B]], i64 [[INDEX]]
; V-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP9]], i32 0
; V-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; V-NEXT: [[TMP11:%.*]] = zext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; V-NEXT: [[TMP12:%.*]] = mul <vscale x 4 x i32> [[TMP11]], [[TMP8]]
; V-NEXT: [[TMP13]] = add <vscale x 4 x i32> [[TMP12]], [[VEC_PHI]]
; V-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; V-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; V-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; V: middle.block:
; V-NEXT: [[TMP15:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP13]])
; V-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; V-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]]
; V: scalar.ph:
;
; ZVQDOTQ-LABEL: define i32 @vqdotu(
; ZVQDOTQ-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0]] {
; ZVQDOTQ-NEXT: entry:
; ZVQDOTQ-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; ZVQDOTQ-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; ZVQDOTQ-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; ZVQDOTQ-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; ZVQDOTQ: vector.ph:
; ZVQDOTQ-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; ZVQDOTQ-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; ZVQDOTQ-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; ZVQDOTQ-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; ZVQDOTQ-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; ZVQDOTQ-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; ZVQDOTQ-NEXT: br label [[VECTOR_BODY:%.*]]
; ZVQDOTQ: vector.body:
; ZVQDOTQ-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; ZVQDOTQ-NEXT: [[VEC_PHI:%.*]] = phi <vscale x 1 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE:%.*]], [[VECTOR_BODY]] ]
; ZVQDOTQ-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[A]], i64 [[INDEX]]
; ZVQDOTQ-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP6]], i32 0
; ZVQDOTQ-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP7]], align 1
; ZVQDOTQ-NEXT: [[TMP8:%.*]] = zext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; ZVQDOTQ-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[B]], i64 [[INDEX]]
; ZVQDOTQ-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP9]], i32 0
; ZVQDOTQ-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; ZVQDOTQ-NEXT: [[TMP11:%.*]] = zext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; ZVQDOTQ-NEXT: [[TMP12:%.*]] = mul <vscale x 4 x i32> [[TMP11]], [[TMP8]]
; ZVQDOTQ-NEXT: [[PARTIAL_REDUCE]] = call <vscale x 1 x i32> @llvm.experimental.vector.partial.reduce.add.nxv1i32.nxv4i32(<vscale x 1 x i32> [[VEC_PHI]], <vscale x 4 x i32> [[TMP12]])
; ZVQDOTQ-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; ZVQDOTQ-NEXT: [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; ZVQDOTQ-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; ZVQDOTQ: middle.block:
; ZVQDOTQ-NEXT: [[TMP14:%.*]] = call i32 @llvm.vector.reduce.add.nxv1i32(<vscale x 1 x i32> [[PARTIAL_REDUCE]])
; ZVQDOTQ-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; ZVQDOTQ-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]]
; ZVQDOTQ: scalar.ph:
;
entry:
br label %for.body
Expand All @@ -128,7 +202,7 @@ for.exit: ; preds = %for.body

define i32 @vqdotsu(ptr %a, ptr %b) #0 {
; CHECK-LABEL: define i32 @vqdotsu(
; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0]] {
; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
Expand Down Expand Up @@ -245,6 +319,3 @@ for.body: ; preds = %for.body, %entry
for.exit: ; preds = %for.body
ret i32 %add
}
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; V: {{.*}}
; ZVQDOTQ: {{.*}}