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Aug 8, 2024
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TTI: Check legalization cost of min/max ISD nodes #100514

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TTI: Check legalization cost of min/max ISD nodes
arsenm Jul 2, 2024
7d02cdf
Preserve default expansion logic
arsenm Jul 25, 2024
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38 changes: 25 additions & 13 deletions llvm/include/llvm/CodeGen/BasicTTIImpl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2135,21 +2135,17 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
return Cost;
}
case Intrinsic::smax:
ISD = ISD::SMAX;
break;
case Intrinsic::smin:
ISD = ISD::SMIN;
break;
case Intrinsic::umax:
case Intrinsic::umin: {
// minmax(X,Y) = select(icmp(X,Y),X,Y)
Type *CondTy = RetTy->getWithNewBitWidth(1);
bool IsUnsigned = IID == Intrinsic::umax || IID == Intrinsic::umin;
CmpInst::Predicate Pred =
IsUnsigned ? CmpInst::ICMP_UGT : CmpInst::ICMP_SGT;
InstructionCost Cost = 0;
Cost += thisT()->getCmpSelInstrCost(BinaryOperator::ICmp, RetTy, CondTy,
Pred, CostKind);
Cost += thisT()->getCmpSelInstrCost(BinaryOperator::Select, RetTy, CondTy,
Pred, CostKind);
return Cost;
}
ISD = ISD::UMAX;
break;
case Intrinsic::umin:
ISD = ISD::UMIN;
break;
case Intrinsic::sadd_sat:
ISD = ISD::SADDSAT;
break;
Expand Down Expand Up @@ -2345,6 +2341,22 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
return thisT()->getIntrinsicInstrCost(FMulAttrs, CostKind) +
thisT()->getIntrinsicInstrCost(FAddAttrs, CostKind);
}
case Intrinsic::smin:
case Intrinsic::smax:
case Intrinsic::umin:
case Intrinsic::umax: {
// minmax(X,Y) = select(icmp(X,Y),X,Y)
Type *CondTy = RetTy->getWithNewBitWidth(1);
bool IsUnsigned = IID == Intrinsic::umax || IID == Intrinsic::umin;
CmpInst::Predicate Pred =
IsUnsigned ? CmpInst::ICMP_UGT : CmpInst::ICMP_SGT;
InstructionCost Cost = 0;
Cost += thisT()->getCmpSelInstrCost(BinaryOperator::ICmp, RetTy, CondTy,
Pred, CostKind);
Cost += thisT()->getCmpSelInstrCost(BinaryOperator::Select, RetTy, CondTy,
Pred, CostKind);
return Cost;
}
case Intrinsic::sadd_sat:
case Intrinsic::ssub_sat: {
// Assume a default expansion.
Expand Down
164 changes: 58 additions & 106 deletions llvm/test/Analysis/CostModel/AMDGPU/arith-sminmax.ll
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164 changes: 58 additions & 106 deletions llvm/test/Analysis/CostModel/AMDGPU/arith-uminmax.ll
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4 changes: 2 additions & 2 deletions llvm/test/Analysis/CostModel/ARM/cmps.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -227,7 +227,7 @@ define void @minmax() {
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %c3 = icmp slt i32 undef, undef
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %s3 = select i1 %c3, i32 undef, i32 undef
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 0 for instruction: %c4 = icmp slt <4 x i32> undef, undef
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %s4 = select <4 x i1> %c4, <4 x i32> undef, <4 x i32> undef
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %s4 = select <4 x i1> %c4, <4 x i32> undef, <4 x i32> undef
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %c5 = icmp slt ptr undef, undef
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %s5 = select i1 %c5, ptr undef, ptr undef
; CHECK-V8R-RECIP-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %c6 = icmp slt <4 x ptr> undef, undef
Expand Down Expand Up @@ -287,7 +287,7 @@ define void @minmax() {
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %c3 = icmp slt i32 undef, undef
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %s3 = select i1 %c3, i32 undef, i32 undef
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: %c4 = icmp slt <4 x i32> undef, undef
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %s4 = select <4 x i1> %c4, <4 x i32> undef, <4 x i32> undef
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %s4 = select <4 x i1> %c4, <4 x i32> undef, <4 x i32> undef
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %c5 = icmp slt ptr undef, undef
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %s5 = select i1 %c5, ptr undef, ptr undef
; CHECK-V8R-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %c6 = icmp slt <4 x ptr> undef, undef
Expand Down
12 changes: 6 additions & 6 deletions llvm/test/Analysis/CostModel/ARM/reduce-smax.ll
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Expand Up @@ -48,7 +48,7 @@ define i32 @reduce_i32(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i32'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i32 @llvm.vector.reduce.smax.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i32 @llvm.vector.reduce.smax.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8 = call i32 @llvm.vector.reduce.smax.v8i32(<8 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16 = call i32 @llvm.vector.reduce.smax.v16i32(<16 x i32> undef)
Expand Down Expand Up @@ -82,8 +82,8 @@ define i32 @reduce_i16(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i16'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i16 @llvm.vector.reduce.smax.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i16 @llvm.vector.reduce.smax.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i16 @llvm.vector.reduce.smax.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i16 @llvm.vector.reduce.smax.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V8 = call i16 @llvm.vector.reduce.smax.v8i16(<8 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V16 = call i16 @llvm.vector.reduce.smax.v16i16(<16 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V32 = call i16 @llvm.vector.reduce.smax.v32i16(<32 x i16> undef)
Expand Down Expand Up @@ -120,9 +120,9 @@ define i32 @reduce_i8(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i8'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i8 @llvm.vector.reduce.smax.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i8 @llvm.vector.reduce.smax.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 153 for instruction: %V8 = call i8 @llvm.vector.reduce.smax.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i8 @llvm.vector.reduce.smax.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i8 @llvm.vector.reduce.smax.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 150 for instruction: %V8 = call i8 @llvm.vector.reduce.smax.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V16 = call i8 @llvm.vector.reduce.smax.v16i8(<16 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V32 = call i8 @llvm.vector.reduce.smax.v32i8(<32 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V64 = call i8 @llvm.vector.reduce.smax.v64i8(<64 x i8> undef)
Expand Down
12 changes: 6 additions & 6 deletions llvm/test/Analysis/CostModel/ARM/reduce-smin.ll
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Expand Up @@ -48,7 +48,7 @@ define i32 @reduce_i32(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i32'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i32 @llvm.vector.reduce.smin.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i32 @llvm.vector.reduce.smin.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call i32 @llvm.vector.reduce.smin.v4i32(<4 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8 = call i32 @llvm.vector.reduce.smin.v8i32(<8 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16 = call i32 @llvm.vector.reduce.smin.v16i32(<16 x i32> undef)
Expand Down Expand Up @@ -82,8 +82,8 @@ define i32 @reduce_i16(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i16'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i16 @llvm.vector.reduce.smin.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i16 @llvm.vector.reduce.smin.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i16 @llvm.vector.reduce.smin.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i16 @llvm.vector.reduce.smin.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V8 = call i16 @llvm.vector.reduce.smin.v8i16(<8 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V16 = call i16 @llvm.vector.reduce.smin.v16i16(<16 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V32 = call i16 @llvm.vector.reduce.smin.v32i16(<32 x i16> undef)
Expand Down Expand Up @@ -120,9 +120,9 @@ define i32 @reduce_i8(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i8'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i8 @llvm.vector.reduce.smin.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i8 @llvm.vector.reduce.smin.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 153 for instruction: %V8 = call i8 @llvm.vector.reduce.smin.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i8 @llvm.vector.reduce.smin.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i8 @llvm.vector.reduce.smin.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 150 for instruction: %V8 = call i8 @llvm.vector.reduce.smin.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V16 = call i8 @llvm.vector.reduce.smin.v16i8(<16 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V32 = call i8 @llvm.vector.reduce.smin.v32i8(<32 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V64 = call i8 @llvm.vector.reduce.smin.v64i8(<64 x i8> undef)
Expand Down
12 changes: 6 additions & 6 deletions llvm/test/Analysis/CostModel/ARM/reduce-umax.ll
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Expand Up @@ -48,7 +48,7 @@ define i32 @reduce_i32(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i32'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i32 @llvm.vector.reduce.umax.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i32 @llvm.vector.reduce.umax.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call i32 @llvm.vector.reduce.umax.v4i32(<4 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8 = call i32 @llvm.vector.reduce.umax.v8i32(<8 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16 = call i32 @llvm.vector.reduce.umax.v16i32(<16 x i32> undef)
Expand Down Expand Up @@ -82,8 +82,8 @@ define i32 @reduce_i16(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i16'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i16 @llvm.vector.reduce.umax.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i16 @llvm.vector.reduce.umax.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i16 @llvm.vector.reduce.umax.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i16 @llvm.vector.reduce.umax.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V8 = call i16 @llvm.vector.reduce.umax.v8i16(<8 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V16 = call i16 @llvm.vector.reduce.umax.v16i16(<16 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V32 = call i16 @llvm.vector.reduce.umax.v32i16(<32 x i16> undef)
Expand Down Expand Up @@ -120,9 +120,9 @@ define i32 @reduce_i8(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i8'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i8 @llvm.vector.reduce.umax.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i8 @llvm.vector.reduce.umax.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 153 for instruction: %V8 = call i8 @llvm.vector.reduce.umax.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i8 @llvm.vector.reduce.umax.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i8 @llvm.vector.reduce.umax.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 150 for instruction: %V8 = call i8 @llvm.vector.reduce.umax.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V16 = call i8 @llvm.vector.reduce.umax.v16i8(<16 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V32 = call i8 @llvm.vector.reduce.umax.v32i8(<32 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V64 = call i8 @llvm.vector.reduce.umax.v64i8(<64 x i8> undef)
Expand Down
12 changes: 6 additions & 6 deletions llvm/test/Analysis/CostModel/ARM/reduce-umin.ll
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Expand Up @@ -48,7 +48,7 @@ define i32 @reduce_i32(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i32'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i32 @llvm.vector.reduce.umin.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i32 @llvm.vector.reduce.umin.v2i32(<2 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call i32 @llvm.vector.reduce.umin.v4i32(<4 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8 = call i32 @llvm.vector.reduce.umin.v8i32(<8 x i32> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16 = call i32 @llvm.vector.reduce.umin.v16i32(<16 x i32> undef)
Expand Down Expand Up @@ -82,8 +82,8 @@ define i32 @reduce_i16(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i16'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i16 @llvm.vector.reduce.umin.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i16 @llvm.vector.reduce.umin.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i16 @llvm.vector.reduce.umin.v2i16(<2 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i16 @llvm.vector.reduce.umin.v4i16(<4 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V8 = call i16 @llvm.vector.reduce.umin.v8i16(<8 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V16 = call i16 @llvm.vector.reduce.umin.v16i16(<16 x i16> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V32 = call i16 @llvm.vector.reduce.umin.v32i16(<32 x i16> undef)
Expand Down Expand Up @@ -120,9 +120,9 @@ define i32 @reduce_i8(i32 %arg) {
; V8M-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
;
; NEON-LABEL: 'reduce_i8'
; NEON-NEXT: Cost Model: Found an estimated cost of 17 for instruction: %V2 = call i8 @llvm.vector.reduce.umin.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 55 for instruction: %V4 = call i8 @llvm.vector.reduce.umin.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 153 for instruction: %V8 = call i8 @llvm.vector.reduce.umin.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V2 = call i8 @llvm.vector.reduce.umin.v2i8(<2 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 53 for instruction: %V4 = call i8 @llvm.vector.reduce.umin.v4i8(<4 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 150 for instruction: %V8 = call i8 @llvm.vector.reduce.umin.v8i8(<8 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V16 = call i8 @llvm.vector.reduce.umin.v16i8(<16 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V32 = call i8 @llvm.vector.reduce.umin.v32i8(<32 x i8> undef)
; NEON-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V64 = call i8 @llvm.vector.reduce.umin.v64i8(<64 x i8> undef)
Expand Down
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