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X86 horizontal vector reduction cost model

llvm-svn: 191021
This commit is contained in:
Yi Jiang 2013-09-19 17:48:48 +00:00
parent 907e26020c
commit ed81b17719
2 changed files with 355 additions and 0 deletions

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@ -101,6 +101,9 @@ public:
unsigned AddressSpace) const;
virtual unsigned getAddressComputationCost(Type *PtrTy, bool IsComplex) const;
virtual unsigned getReductionCost(unsigned Opcode, Type *Ty,
bool IsPairwiseForm) const;
/// @}
};
@ -605,3 +608,84 @@ unsigned X86TTI::getAddressComputationCost(Type *Ty, bool IsComplex) const {
return TargetTransformInfo::getAddressComputationCost(Ty, IsComplex);
}
unsigned X86TTI::getReductionCost(unsigned Opcode, Type *ValTy,
bool IsPairwise) const {
std::pair<unsigned, MVT> LT = TLI->getTypeLegalizationCost(ValTy);
MVT MTy = LT.second;
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Invalid opcode");
// We use the Intel Architecture Code Analyzer(IACA) to measure the throughput
// and make it as the cost.
static const CostTblEntry<MVT::SimpleValueType> SSE42CostTblPairWise[] = {
{ ISD::FADD, MVT::v2f64, 2 },
{ ISD::FADD, MVT::v4f32, 4 },
{ ISD::ADD, MVT::v2i64, 2 }, // The data reported by the IACA tool is "1.6".
{ ISD::ADD, MVT::v4i32, 3 }, // The data reported by the IACA tool is "3.5".
{ ISD::ADD, MVT::v8i16, 5 },
};
static const CostTblEntry<MVT::SimpleValueType> AVX1CostTblPairWise[] = {
{ ISD::FADD, MVT::v4f32, 4 },
{ ISD::FADD, MVT::v4f64, 5 },
{ ISD::FADD, MVT::v8f32, 7 },
{ ISD::ADD, MVT::v2i64, 1 }, // The data reported by the IACA tool is "1.5".
{ ISD::ADD, MVT::v4i32, 3 }, // The data reported by the IACA tool is "3.5".
{ ISD::ADD, MVT::v4i64, 5 }, // The data reported by the IACA tool is "4.8".
{ ISD::ADD, MVT::v8i16, 5 },
{ ISD::ADD, MVT::v8i32, 5 },
};
static const CostTblEntry<MVT::SimpleValueType> SSE42CostTblNoPairWise[] = {
{ ISD::FADD, MVT::v2f64, 2 },
{ ISD::FADD, MVT::v4f32, 4 },
{ ISD::ADD, MVT::v2i64, 2 }, // The data reported by the IACA tool is "1.6".
{ ISD::ADD, MVT::v4i32, 3 }, // The data reported by the IACA tool is "3.3".
{ ISD::ADD, MVT::v8i16, 4 }, // The data reported by the IACA tool is "4.3".
};
static const CostTblEntry<MVT::SimpleValueType> AVX1CostTblNoPairWise[] = {
{ ISD::FADD, MVT::v4f32, 3 },
{ ISD::FADD, MVT::v4f64, 3 },
{ ISD::FADD, MVT::v8f32, 4 },
{ ISD::ADD, MVT::v2i64, 1 }, // The data reported by the IACA tool is "1.5".
{ ISD::ADD, MVT::v4i32, 3 }, // The data reported by the IACA tool is "2.8".
{ ISD::ADD, MVT::v4i64, 3 },
{ ISD::ADD, MVT::v8i16, 4 },
{ ISD::ADD, MVT::v8i32, 5 },
};
if (IsPairwise) {
if (ST->hasAVX()) {
int Idx = CostTableLookup(AVX1CostTblPairWise, ISD, MTy);
if (Idx != -1)
return LT.first * AVX1CostTblPairWise[Idx].Cost;
}
if (ST->hasSSE42()) {
int Idx = CostTableLookup(SSE42CostTblPairWise, ISD, MTy);
if (Idx != -1)
return LT.first * SSE42CostTblPairWise[Idx].Cost;
}
} else {
if (ST->hasAVX()) {
int Idx = CostTableLookup(AVX1CostTblNoPairWise, ISD, MTy);
if (Idx != -1)
return LT.first * AVX1CostTblNoPairWise[Idx].Cost;
}
if (ST->hasSSE42()) {
int Idx = CostTableLookup(SSE42CostTblNoPairWise, ISD, MTy);
if (Idx != -1)
return LT.first * SSE42CostTblNoPairWise[Idx].Cost;
}
}
return TargetTransformInfo::getReductionCost(Opcode, ValTy, IsPairwise);
}

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@ -1,4 +1,7 @@
; RUN: opt < %s -cost-model -costmodel-reduxcost=true -analyze -mcpu=core2 -mtriple=x86_64-apple-darwin | FileCheck %s
; RUN: opt < %s -cost-model -costmodel-reduxcost=true -analyze -mcpu=corei7 -mtriple=x86_64-apple-darwin | FileCheck %s --check-prefix=SSE3
; RUN: opt < %s -cost-model -costmodel-reduxcost=true -analyze -mcpu=corei7-avx -mtriple=x86_64-apple-darwin | FileCheck %s --check-prefix=AVX
; RUN: opt < %s -cost-model -costmodel-reduxcost=true -analyze -mcpu=core-avx2 -mtriple=x86_64-apple-darwin | FileCheck %s --check-prefix=AVX2
define fastcc float @reduction_cost_float(<4 x float> %rdx) {
%rdx.shuf = shufflevector <4 x float> %rdx, <4 x float> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
@ -55,6 +58,7 @@ define fastcc float @pairwise_hadd(<4 x float> %rdx, float %f1) {
%r2 = fadd float %r, %f1
ret float %r2
}
define fastcc float @pairwise_hadd_assoc(<4 x float> %rdx, float %f1) {
%rdx.shuf.0.0 = shufflevector <4 x float> %rdx, <4 x float> undef,
<4 x i32> <i32 0, i32 2 , i32 undef, i32 undef>
@ -92,3 +96,270 @@ define fastcc float @pairwise_hadd_skip_first(<4 x float> %rdx, float %f1) {
%r2 = fadd float %r, %f1
ret float %r2
}
define fastcc double @no_pairwise_reduction2double(<2 x double> %rdx, double %f1) {
%rdx.shuf = shufflevector <2 x double> %rdx, <2 x double> undef, <2 x i32> <i32 1, i32 undef>
%bin.rdx = fadd <2 x double> %rdx, %rdx.shuf
; SSE3: cost of 2 {{.*}} extractelement
; AVX: cost of 2 {{.*}} extractelement
; AVX2: cost of 2 {{.*}} extractelement
%r = extractelement <2 x double> %bin.rdx, i32 0
ret double %r
}
define fastcc float @no_pairwise_reduction4float(<4 x float> %rdx, float %f1) {
%rdx.shuf = shufflevector <4 x float> %rdx, <4 x float> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
%bin.rdx = fadd <4 x float> %rdx, %rdx.shuf
%rdx.shuf7 = shufflevector <4 x float> %bin.rdx, <4 x float> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = fadd <4 x float> %bin.rdx, %rdx.shuf7
; SSE3: cost of 4 {{.*}} extractelement
; AVX: cost of 3 {{.*}} extractelement
; AVX2: cost of 3 {{.*}} extractelement
%r = extractelement <4 x float> %bin.rdx8, i32 0
ret float %r
}
define fastcc double @no_pairwise_reduction4double(<4 x double> %rdx, double %f1) {
%rdx.shuf = shufflevector <4 x double> %rdx, <4 x double> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
%bin.rdx = fadd <4 x double> %rdx, %rdx.shuf
%rdx.shuf7 = shufflevector <4 x double> %bin.rdx, <4 x double> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = fadd <4 x double> %bin.rdx, %rdx.shuf7
; AVX: cost of 3 {{.*}} extractelement
; AVX2: cost of 3 {{.*}} extractelement
%r = extractelement <4 x double> %bin.rdx8, i32 0
ret double %r
}
define fastcc float @no_pairwise_reduction8float(<8 x float> %rdx, float %f1) {
%rdx.shuf3 = shufflevector <8 x float> %rdx, <8 x float> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7,i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx4 = fadd <8 x float> %rdx, %rdx.shuf3
%rdx.shuf = shufflevector <8 x float> %bin.rdx4, <8 x float> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx = fadd <8 x float> %bin.rdx4, %rdx.shuf
%rdx.shuf7 = shufflevector <8 x float> %bin.rdx, <8 x float> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = fadd <8 x float> %bin.rdx, %rdx.shuf7
; AVX: cost of 4 {{.*}} extractelement
; AVX2: cost of 4 {{.*}} extractelement
%r = extractelement <8 x float> %bin.rdx8, i32 0
ret float %r
}
define fastcc i64 @no_pairwise_reduction2i64(<2 x i64> %rdx, i64 %f1) {
%rdx.shuf = shufflevector <2 x i64> %rdx, <2 x i64> undef, <2 x i32> <i32 1, i32 undef>
%bin.rdx = add <2 x i64> %rdx, %rdx.shuf
; SSE3: cost of 2 {{.*}} extractelement
; AVX: cost of 1 {{.*}} extractelement
; AVX2: cost of 1 {{.*}} extractelement
%r = extractelement <2 x i64> %bin.rdx, i32 0
ret i64 %r
}
define fastcc i32 @no_pairwise_reduction4i32(<4 x i32> %rdx, i32 %f1) {
%rdx.shuf = shufflevector <4 x i32> %rdx, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
%bin.rdx = add <4 x i32> %rdx, %rdx.shuf
%rdx.shuf7 = shufflevector <4 x i32> %bin.rdx, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <4 x i32> %bin.rdx, %rdx.shuf7
; SSE3: cost of 3 {{.*}} extractelement
; AVX: cost of 3 {{.*}} extractelement
; AVX2: cost of 3 {{.*}} extractelement
%r = extractelement <4 x i32> %bin.rdx8, i32 0
ret i32 %r
}
define fastcc i64 @no_pairwise_reduction4i64(<4 x i64> %rdx, i64 %f1) {
%rdx.shuf = shufflevector <4 x i64> %rdx, <4 x i64> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
%bin.rdx = add <4 x i64> %rdx, %rdx.shuf
%rdx.shuf7 = shufflevector <4 x i64> %bin.rdx, <4 x i64> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <4 x i64> %bin.rdx, %rdx.shuf7
; AVX: cost of 3 {{.*}} extractelement
; AVX2: cost of 3 {{.*}} extractelement
%r = extractelement <4 x i64> %bin.rdx8, i32 0
ret i64 %r
}
define fastcc i16 @no_pairwise_reduction8i16(<8 x i16> %rdx, i16 %f1) {
%rdx.shuf3 = shufflevector <8 x i16> %rdx, <8 x i16> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7,i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx4 = add <8 x i16> %rdx, %rdx.shuf3
%rdx.shuf = shufflevector <8 x i16> %bin.rdx4, <8 x i16> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx = add <8 x i16> %bin.rdx4, %rdx.shuf
%rdx.shuf7 = shufflevector <8 x i16> %bin.rdx, <8 x i16> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <8 x i16> %bin.rdx, %rdx.shuf7
; SSE3: cost of 4 {{.*}} extractelement
; AVX: cost of 4 {{.*}} extractelement
; AVX2: cost of 4 {{.*}} extractelement
%r = extractelement <8 x i16> %bin.rdx8, i32 0
ret i16 %r
}
define fastcc i32 @no_pairwise_reduction8i32(<8 x i32> %rdx, i32 %f1) {
%rdx.shuf3 = shufflevector <8 x i32> %rdx, <8 x i32> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7,i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx4 = add <8 x i32> %rdx, %rdx.shuf3
%rdx.shuf = shufflevector <8 x i32> %bin.rdx4, <8 x i32> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx = add <8 x i32> %bin.rdx4, %rdx.shuf
%rdx.shuf7 = shufflevector <8 x i32> %bin.rdx, <8 x i32> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <8 x i32> %bin.rdx, %rdx.shuf7
; AVX: cost of 5 {{.*}} extractelement
; AVX2: cost of 5 {{.*}} extractelement
%r = extractelement <8 x i32> %bin.rdx8, i32 0
ret i32 %r
}
define fastcc double @pairwise_reduction2double(<2 x double> %rdx, double %f1) {
%rdx.shuf.1.0 = shufflevector <2 x double> %rdx, <2 x double> undef, <2 x i32> <i32 0, i32 undef>
%rdx.shuf.1.1 = shufflevector <2 x double> %rdx, <2 x double> undef, <2 x i32> <i32 1, i32 undef>
%bin.rdx8 = fadd <2 x double> %rdx.shuf.1.0, %rdx.shuf.1.1
; SSE3: cost of 2 {{.*}} extractelement
; AVX: cost of 2 {{.*}} extractelement
; AVX2: cost of 2 {{.*}} extractelement
%r = extractelement <2 x double> %bin.rdx8, i32 0
ret double %r
}
define fastcc float @pairwise_reduction4float(<4 x float> %rdx, float %f1) {
%rdx.shuf.0.0 = shufflevector <4 x float> %rdx, <4 x float> undef, <4 x i32> <i32 0, i32 2, i32 undef, i32 undef>
%rdx.shuf.0.1 = shufflevector <4 x float> %rdx, <4 x float> undef, <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
%bin.rdx = fadd <4 x float> %rdx.shuf.0.0, %rdx.shuf.0.1
%rdx.shuf.1.0 = shufflevector <4 x float> %bin.rdx, <4 x float> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
%rdx.shuf.1.1 = shufflevector <4 x float> %bin.rdx, <4 x float> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = fadd <4 x float> %rdx.shuf.1.0, %rdx.shuf.1.1
; SSE3: cost of 4 {{.*}} extractelement
; AVX: cost of 4 {{.*}} extractelement
; AVX2: cost of 4 {{.*}} extractelement
%r = extractelement <4 x float> %bin.rdx8, i32 0
ret float %r
}
define fastcc double @pairwise_reduction4double(<4 x double> %rdx, double %f1) {
%rdx.shuf.0.0 = shufflevector <4 x double> %rdx, <4 x double> undef, <4 x i32> <i32 0, i32 2, i32 undef, i32 undef>
%rdx.shuf.0.1 = shufflevector <4 x double> %rdx, <4 x double> undef, <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
%bin.rdx = fadd <4 x double> %rdx.shuf.0.0, %rdx.shuf.0.1
%rdx.shuf.1.0 = shufflevector <4 x double> %bin.rdx, <4 x double> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
%rdx.shuf.1.1 = shufflevector <4 x double> %bin.rdx, <4 x double> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = fadd <4 x double> %rdx.shuf.1.0, %rdx.shuf.1.1
; AVX: cost of 5 {{.*}} extractelement
; AVX2: cost of 5 {{.*}} extractelement
%r = extractelement <4 x double> %bin.rdx8, i32 0
ret double %r
}
define fastcc float @pairwise_reduction8float(<8 x float> %rdx, float %f1) {
%rdx.shuf.0.0 = shufflevector <8 x float> %rdx, <8 x float> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6,i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.0.1 = shufflevector <8 x float> %rdx, <8 x float> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7,i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx = fadd <8 x float> %rdx.shuf.0.0, %rdx.shuf.0.1
%rdx.shuf.1.0 = shufflevector <8 x float> %bin.rdx, <8 x float> undef,<8 x i32> <i32 0, i32 2, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.1.1 = shufflevector <8 x float> %bin.rdx, <8 x float> undef,<8 x i32> <i32 1, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = fadd <8 x float> %rdx.shuf.1.0, %rdx.shuf.1.1
%rdx.shuf.2.0 = shufflevector <8 x float> %bin.rdx8, <8 x float> undef,<8 x i32> <i32 0, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.2.1 = shufflevector <8 x float> %bin.rdx8, <8 x float> undef,<8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx9 = fadd <8 x float> %rdx.shuf.2.0, %rdx.shuf.2.1
; AVX: cost of 7 {{.*}} extractelement
; AVX2: cost of 7 {{.*}} extractelement
%r = extractelement <8 x float> %bin.rdx9, i32 0
ret float %r
}
define fastcc i64 @pairwise_reduction2i64(<2 x i64> %rdx, i64 %f1) {
%rdx.shuf.1.0 = shufflevector <2 x i64> %rdx, <2 x i64> undef, <2 x i32> <i32 0, i32 undef>
%rdx.shuf.1.1 = shufflevector <2 x i64> %rdx, <2 x i64> undef, <2 x i32> <i32 1, i32 undef>
%bin.rdx8 = add <2 x i64> %rdx.shuf.1.0, %rdx.shuf.1.1
; SSE3: cost of 2 {{.*}} extractelement
; AVX: cost of 1 {{.*}} extractelement
; AVX2: cost of 1 {{.*}} extractelement
%r = extractelement <2 x i64> %bin.rdx8, i32 0
ret i64 %r
}
define fastcc i32 @pairwise_reduction4i32(<4 x i32> %rdx, i32 %f1) {
%rdx.shuf.0.0 = shufflevector <4 x i32> %rdx, <4 x i32> undef, <4 x i32> <i32 0, i32 2, i32 undef, i32 undef>
%rdx.shuf.0.1 = shufflevector <4 x i32> %rdx, <4 x i32> undef, <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
%bin.rdx = add <4 x i32> %rdx.shuf.0.0, %rdx.shuf.0.1
%rdx.shuf.1.0 = shufflevector <4 x i32> %bin.rdx, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
%rdx.shuf.1.1 = shufflevector <4 x i32> %bin.rdx, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <4 x i32> %rdx.shuf.1.0, %rdx.shuf.1.1
; SSE3: cost of 3 {{.*}} extractelement
; AVX: cost of 3 {{.*}} extractelement
; AVX2: cost of 3 {{.*}} extractelement
%r = extractelement <4 x i32> %bin.rdx8, i32 0
ret i32 %r
}
define fastcc i64 @pairwise_reduction4i64(<4 x i64> %rdx, i64 %f1) {
%rdx.shuf.0.0 = shufflevector <4 x i64> %rdx, <4 x i64> undef, <4 x i32> <i32 0, i32 2, i32 undef, i32 undef>
%rdx.shuf.0.1 = shufflevector <4 x i64> %rdx, <4 x i64> undef, <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
%bin.rdx = add <4 x i64> %rdx.shuf.0.0, %rdx.shuf.0.1
%rdx.shuf.1.0 = shufflevector <4 x i64> %bin.rdx, <4 x i64> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
%rdx.shuf.1.1 = shufflevector <4 x i64> %bin.rdx, <4 x i64> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <4 x i64> %rdx.shuf.1.0, %rdx.shuf.1.1
; AVX: cost of 5 {{.*}} extractelement
; AVX2: cost of 5 {{.*}} extractelement
%r = extractelement <4 x i64> %bin.rdx8, i32 0
ret i64 %r
}
define fastcc i16 @pairwise_reduction8i16(<8 x i16> %rdx, i16 %f1) {
%rdx.shuf.0.0 = shufflevector <8 x i16> %rdx, <8 x i16> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6,i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.0.1 = shufflevector <8 x i16> %rdx, <8 x i16> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7,i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx = add <8 x i16> %rdx.shuf.0.0, %rdx.shuf.0.1
%rdx.shuf.1.0 = shufflevector <8 x i16> %bin.rdx, <8 x i16> undef,<8 x i32> <i32 0, i32 2, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.1.1 = shufflevector <8 x i16> %bin.rdx, <8 x i16> undef,<8 x i32> <i32 1, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <8 x i16> %rdx.shuf.1.0, %rdx.shuf.1.1
%rdx.shuf.2.0 = shufflevector <8 x i16> %bin.rdx8, <8 x i16> undef,<8 x i32> <i32 0, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.2.1 = shufflevector <8 x i16> %bin.rdx8, <8 x i16> undef,<8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx9 = add <8 x i16> %rdx.shuf.2.0, %rdx.shuf.2.1
; SSE3: cost of 5 {{.*}} extractelement
; AVX: cost of 5 {{.*}} extractelement
; AVX2: cost of 5 {{.*}} extractelement
%r = extractelement <8 x i16> %bin.rdx9, i32 0
ret i16 %r
}
define fastcc i32 @pairwise_reduction8i32(<8 x i32> %rdx, i32 %f1) {
%rdx.shuf.0.0 = shufflevector <8 x i32> %rdx, <8 x i32> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6,i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.0.1 = shufflevector <8 x i32> %rdx, <8 x i32> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7,i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx = add <8 x i32> %rdx.shuf.0.0, %rdx.shuf.0.1
%rdx.shuf.1.0 = shufflevector <8 x i32> %bin.rdx, <8 x i32> undef,<8 x i32> <i32 0, i32 2, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.1.1 = shufflevector <8 x i32> %bin.rdx, <8 x i32> undef,<8 x i32> <i32 1, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx8 = add <8 x i32> %rdx.shuf.1.0, %rdx.shuf.1.1
%rdx.shuf.2.0 = shufflevector <8 x i32> %bin.rdx8, <8 x i32> undef,<8 x i32> <i32 0, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%rdx.shuf.2.1 = shufflevector <8 x i32> %bin.rdx8, <8 x i32> undef,<8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%bin.rdx9 = add <8 x i32> %rdx.shuf.2.0, %rdx.shuf.2.1
; AVX: cost of 5 {{.*}} extractelement
; AVX2: cost of 5 {{.*}} extractelement
%r = extractelement <8 x i32> %bin.rdx9, i32 0
ret i32 %r
}