OV - exec - Loop 83

	Loop Id: 83	Module: exec	Source: advec_cell_kernel.f90:199-246 [...]	Coverage: 3.65%

0x419680 LDR	W8, [SP, #92]    [13]

0x419684 LDP	W13, W9, [SP, #116]    [13]

0x419688 ADD	W12, W9, #1

0x41968c ADD	W17, W17, #1

0x419690 CMP	W9, W8

0x419694 ADD	W13, W13, #1

0x419698 B.EQ	41989c

0x41969c LDP	X11, X9, [SP, #72]    [12]

0x4196a0 LDR	X10, [SP, #128]    [12]

0x4196a4 ORR	X4, XZR, XZR

0x4196a8 ADD	X8, X11, W17,SXTW

0x4196ac STP	W13, W12, [SP, #116]    [12]

0x4196b0 LDR	X3, [SP, #48]    [12]

0x4196b4 MADD	X5, X10, X8, X9

0x4196b8 ADD	X8, X11, W13,SXTW

0x4196bc LDP	X13, X11, [SP, #56]    [12]

0x4196c0 MADD	X6, X11, X8, X13

0x4196c4 MUL	X8, X10, X8

0x4196c8 ADD	X8, X9, X8

0x4196cc ADD	X7, X25, X8,LSL #3

0x4196d0 ADD	X26, X19, X8,LSL #3

0x4196d4 LDR	W8, [SP, #88]    [12]

0x4196d8 ADD	W8, W8, W12

0x4196dc LDR	X12, [SP, #136]    [12]

0x4196e0 SBFM	X9, X8, #0, #31

0x4196e4 ADD	W28, W8, #1

0x4196e8 SUB	W30, W8, #2

0x4196ec SUB	X9, X9, X14

0x4196f0 MUL	X27, X9, X10

0x4196f4 SUB	W10, W8, #1

0x4196f8 LDUR	X8, [X29, #368]    [4]

0x4196fc MUL	X11, X9, X12

0x419700 LDR	D3, [X8, X9,LSL #3]    [9]

0x419704 SBFM	X8, X10, #0, #31

0x419708 LDR	X9, [SP, #96]    [12]

0x41970c SUB	X10, X8, X14

0x419710 MUL	X12, X10, X12

0x419714 B	419740

0x419720 FADD	D5, D18, D17

0x419724 SUB	X3, X3, #1

0x419728 ADD	X9, X9, #1

0x41972c CMP	X3, #1

0x419730 FMUL	D4, D4, D5

0x419734 STR	D4, [X6, X4,LSL #3]    [10]

0x419738 ADD	X4, X4, #1

0x41973c B.LE	419680

0x419740 LDR	D4, [X26, X4,LSL #3]    [3]

0x419744 SUB	X8, X9, X24

0x419748 ADD	X8, X8, X27

0x41974c FCMP	D4, #0

0x419750 B.LE	419768

0x419754 ADD	X18, X5, X4

0x419758 ORR	X15, XZR, X10

0x41975c ORR	X23, XZR, X12

0x419760 ORR	W13, WZR, W30

0x419764 B	419790

0x419768 LDR	X13, [SP, #152]    [8]

0x41976c ORR	X18, XZR, X8

0x419770 ADD	X8, X5, X4

0x419774 ORR	X23, XZR, X11

0x419778 LDR	W13, [X13]    [11]

0x41977c ADD	W13, W13, #2

0x419780 CMP	W28, W13

0x419784 CSEL	W13, W28, W13, #11

0x419788 SBFM	X15, X13, #0, #31

0x41978c SUB	X15, X15, X14

0x419790 ADD	X23, X2, X23,LSL #3

0x419794 SBFM	X13, X13, #0, #31

0x419798 FABS	D5, D4

0x41979c LDR	D16, [X20, X18,LSL #3]    [15]

0x4197a0 LDR	D7, [X23, X4,LSL #3]    [2]

0x4197a4 LDUR	X23, [X29, #368]    [5]

0x4197a8 LDR	D6, [X23, X15,LSL #3]    [1]

0x4197ac SUB	X15, X13, X14

0x4197b0 MADD	X13, X16, X15, X1

0x4197b4 FDIV	D18, D5, D7

0x4197b8 LDR	D17, [X13, X4,LSL #3]    [7]

0x4197bc FDIV	D6, D3, D6

0x4197c0 FSUB	D19, D16, S17

0x4197c4 LDR	D17, [X20, X8,LSL #3]    [15]

0x4197c8 FSUB	D20, D17, S16

0x4197cc MOVI	D17, #0

0x4197d0 FADD	D5, D18, D1

0x4197d4 FMUL	D21, D19, D20

0x4197d8 FCMP	D21, #0

0x4197dc MOVI	D21, #0

0x4197e0 FMUL	D5, D5, D6

0x4197e4 FSUB	D6, D2, S18

0x4197e8 B.LE	419824

0x4197ec FSUB	D18, D1, S18

0x4197f0 FCMP	D20, #0

0x4197f4 FABS	D20, D20

0x4197f8 FABS	D19, D19

0x4197fc FNEG	D21, D18

0x419800 FCSEL	D18, D18, D21, #8

0x419804 FMUL	D21, D6, D20

0x419808 FCMP	D19, D20

0x41980c FMADD	D21, D5, D19, D21

0x419810 FCSEL	D19, D19, D20, #4

0x419814 FMUL	D21, D21, D0

0x419818 FCMP	D19, D21

0x41981c FCSEL	D19, D19, D21, #4

0x419820 FMUL	D21, D18, D19

0x419824 FADD	D18, D16, D21

0x419828 MADD	X13, X16, X15, X0

0x41982c LDR	D20, [X22, X8,LSL #3]    [16]

0x419830 FMUL	D4, D4, D18

0x419834 LDR	D18, [X22, X18,LSL #3]    [16]

0x419838 LDR	D19, [X13, X4,LSL #3]    [6]

0x41983c STR	D4, [X7, X4,LSL #3]    [14]

0x419840 FSUB	D19, D18, S19

0x419844 FSUB	D20, D20, S18

0x419848 FMUL	D21, D19, D20

0x41984c FCMP	D21, #0

0x419850 B.LE	419720

0x419854 FMUL	D7, D7, D16

0x419858 FABS	D17, D4

0x41985c FCMP	D20, #0

0x419860 FDIV	D7, D17, D7

0x419864 FABS	D17, D20

0x419868 FMUL	D6, D6, D17

0x41986c FSUB	D7, D1, S7

0x419870 FNEG	D16, D7

0x419874 FCSEL	D7, D7, D16, #8

0x419878 FABS	D16, D19

0x41987c FMADD	D5, D5, D16, D6

0x419880 FCMP	D16, D17

0x419884 FCSEL	D6, D16, D17, #4

0x419888 FMUL	D5, D5, D0

0x41988c FCMP	D6, D5

0x419890 FCSEL	D5, D6, D5, #4

0x419894 FMUL	D17, D7, D5

0x419898 B	419720

/home/eoseret/qaas/qaas_runs/178-231-1255/intel/CloverLeaf1.3-FC/build/CloverLeaf1.3-FC/CloverLeaf_ref/kernels/advec_cell_kernel.f90: 199 - 246

--------------------------------------------------------------------------------

199:       !$OMP DO PRIVATE(upwind,donor,downwind,dif,sigmat,sigma3,sigma4,sigmav,sigma,sigmam, &

200:       !$OMP            diffuw,diffdw,limiter,wind)

201:       DO k=y_min,y_max+2

202:         DO j=x_min,x_max

203:

204:           IF(vol_flux_y(j,k).GT.0.0)THEN

[...]

210:             upwind   =MIN(k+1,y_max+2)

[...]

216:           sigmat=ABS(vol_flux_y(j,k))/pre_vol(j,donor)

217:           sigma3=(1.0_8+sigmat)*(vertexdy(k)/vertexdy(dif))

218:           sigma4=2.0_8-sigmat

219:

220:           sigma=sigmat

221:           sigmav=sigmat

222:

223:           diffuw=density1(j,donor)-density1(j,upwind)

224:           diffdw=density1(j,downwind)-density1(j,donor)

225:           wind=1.0_8

226:           IF(diffdw.LE.0.0) wind=-1.0_8

227:           IF(diffuw*diffdw.GT.0.0)THEN

228:             limiter=(1.0_8-sigmav)*wind*MIN(ABS(diffuw),ABS(diffdw)&

229:               ,one_by_six*(sigma3*ABS(diffuw)+sigma4*ABS(diffdw)))

230:           ELSE

231:             limiter=0.0

232:           ENDIF

233:           mass_flux_y(j,k)=vol_flux_y(j,k)*(density1(j,donor)+limiter)

234:

235:           sigmam=ABS(mass_flux_y(j,k))/(density1(j,donor)*pre_vol(j,donor))

236:           diffuw=energy1(j,donor)-energy1(j,upwind)

237:           diffdw=energy1(j,downwind)-energy1(j,donor)

238:           wind=1.0_8

239:           IF(diffdw.LE.0.0) wind=-1.0_8

240:           IF(diffuw*diffdw.GT.0.0)THEN

241:             limiter=(1.0_8-sigmam)*wind*MIN(ABS(diffuw),ABS(diffdw)&

242:               ,one_by_six*(sigma3*ABS(diffuw)+sigma4*ABS(diffdw)))

243:           ELSE

244:             limiter=0.0

245:           ENDIF

246:           ener_flux(j,k)=mass_flux_y(j,k)*(energy1(j,donor)+limiter)

Coverage (%)	Name	Module
►98.43+	__kmp_invoke_microtask	libomp.so
○	__kmp_invoke_task_func	libomp.so
○	__kmp_launch_thread	libomp.so
○	__kmp_launch_worker(void*)	libomp.so
○	start_thread	libc.so.6
○	thread_start	libc.so.6

min	med	avg	max

Percentile Index	10	20	30	40	50	60	70	80	90	100
Value

min	med	avg	max

Percentile Index	10	20	30	40	50	60	70	80	90	100
Value

Path /

Metric	Value
CQA speedup if no scalar integer	4.16
CQA speedup if FP arith vectorized	1.82
CQA speedup if fully vectorized	5.02 - 3.17
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.23
Bottlenecks	micro-operation queue,
Function	_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par
Source	advec_cell_kernel.f90:199-204,advec_cell_kernel.f90:210-210,advec_cell_kernel.f90:216-246
Source loop unroll info	not unrolled or unrolled with no peel/tail loop
Source loop unroll confidence level	max
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	16.63
CQA cycles if no scalar integer	4.00
CQA cycles if FP arith vectorized	9.13
CQA cycles if fully vectorized	3.31 - 5.24
Front-end cycles	16.63
P0 cycles	4.00
P1 cycles	4.00
P2 cycles	11.75
P3 cycles	11.75
P4 cycles	11.75
P5 cycles	11.75
P6 cycles	13.50
P7 cycles	13.50
P8 cycles	13.50
P9 cycles	13.50
P10 cycles	8.83
P11 cycles	8.50
P12 cycles	8.67
P13 cycles	0.50
P14 cycles	0.50
DIV/SQRT cycles	5.25 - 10.49
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	133.00
Nb uops	133.00
Nb loads	NA
Nb stores	3.00
Nb stack references	11.00
FLOP/cycle	1.74
Nb FLOP add-sub	10.00
Nb FLOP mul	12.00
Nb FLOP fma	2.00
Nb FLOP div	3.00
Nb FLOP rcp	0.00
Nb FLOP sqrt	0.00
Nb FLOP rsqrt	0.00
Bytes/cycle	0.54
Bytes prefetched	0.00
Bytes loaded	9.00
Bytes stored	0.00
Stride 0	NA
Stride 1	NA
Stride n	NA
Stride unknown	NA
Stride indirect	NA
Vectorization ratio all	0.00
Vectorization ratio load	0.00
Vectorization ratio store	0.00
Vectorization ratio mul	0.00
Vectorization ratio add_sub	0.00
Vectorization ratio fma	0.00
Vectorization ratio div_sqrt	0.00
Vectorization ratio other	0.00
Vector-efficiency ratio all	23.93
Vector-efficiency ratio load	25.00
Vector-efficiency ratio store	25.00
Vector-efficiency ratio mul	25.00
Vector-efficiency ratio add_sub	21.32
Vector-efficiency ratio fma	25.00
Vector-efficiency ratio div_sqrt	25.00
Vector-efficiency ratio other	24.11

Metric	Value
CQA speedup if no scalar integer	4.16
CQA speedup if FP arith vectorized	1.82
CQA speedup if fully vectorized	5.02 - 3.17
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.23
Bottlenecks	micro-operation queue,
Function	_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par
Source	advec_cell_kernel.f90:199-204,advec_cell_kernel.f90:210-210,advec_cell_kernel.f90:216-246
Source loop unroll info	not unrolled or unrolled with no peel/tail loop
Source loop unroll confidence level	max
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	16.63
CQA cycles if no scalar integer	4.00
CQA cycles if FP arith vectorized	9.13
CQA cycles if fully vectorized	3.31 - 5.24
Front-end cycles	16.63
P0 cycles	4.00
P1 cycles	4.00
P2 cycles	11.75
P3 cycles	11.75
P4 cycles	11.75
P5 cycles	11.75
P6 cycles	13.50
P7 cycles	13.50
P8 cycles	13.50
P9 cycles	13.50
P10 cycles	8.83
P11 cycles	8.50
P12 cycles	8.67
P13 cycles	0.50
P14 cycles	0.50
DIV/SQRT cycles	5.25 - 10.49
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	133.00
Nb uops	133.00
Nb loads	NA
Nb stores	3.00
Nb stack references	11.00
FLOP/cycle	1.74
Nb FLOP add-sub	10.00
Nb FLOP mul	12.00
Nb FLOP fma	2.00
Nb FLOP div	3.00
Nb FLOP rcp	0.00
Nb FLOP sqrt	0.00
Nb FLOP rsqrt	0.00
Bytes/cycle	0.54
Bytes prefetched	0.00
Bytes loaded	9.00
Bytes stored	0.00
Stride 0	NA
Stride 1	NA
Stride n	NA
Stride unknown	NA
Stride indirect	NA
Vectorization ratio all	0.00
Vectorization ratio load	0.00
Vectorization ratio store	0.00
Vectorization ratio mul	0.00
Vectorization ratio add_sub	0.00
Vectorization ratio fma	0.00
Vectorization ratio div_sqrt	0.00
Vectorization ratio other	0.00
Vector-efficiency ratio all	23.93
Vector-efficiency ratio load	25.00
Vector-efficiency ratio store	25.00
Vector-efficiency ratio mul	25.00
Vector-efficiency ratio add_sub	21.32
Vector-efficiency ratio fma	25.00
Vector-efficiency ratio div_sqrt	25.00
Vector-efficiency ratio other	24.11

Path /

Average path: Display a virtual path defined by average values of all real paths

Function	_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par
Source file and lines	advec_cell_kernel.f90:199-246
Module	exec

The loop is defined in /home/eoseret/qaas/qaas_runs/178-231-1255/intel/CloverLeaf1.3-FC/build/CloverLeaf1.3-FC/CloverLeaf_ref/kernels/advec_cell_kernel.f90:199-204,210,216-246.

The related source loop is not unrolled or unrolled with no peel/tail loop.
Warnings:

Ignoring paths for analysis
Failed to get the number of paths
RecMII not computed since number of paths is unknown or > max_paths
Streams not analyzed since number of paths is unknown or > max_paths

gain
potential
hint
expert

Code clean check

Detected a slowdown caused by scalar integer instructions (typically used for address computation). By removing them, you can lower the cost of an iteration from 16.63 to 4.00 cycles (4.16x speedup).

Workaround

Try to reorganize arrays of structures to structures of arrays
Consider to permute loops (see vectorization gain report)
To reference allocatable arrays, use "allocatable" instead of "pointer" pointers or qualify them with the "contiguous" attribute (Fortran 2008)
For structures, limit to one indirection. For example, use a_b%c instead of a%b%c with a_b set to a%b before this loop

Vectorization

Your loop is not vectorized. Only 23% of vector register length is used (average across all VPU instructions). By vectorizing your loop, you can lower the cost of an iteration from 16.63 to 5.24 cycles (3.17x speedup).

Details

All VPU instructions are used in scalar version (process only one data element in vector registers). Since your execution units are vector units, only a vectorized loop can use their full power.

Workaround

Try another compiler or update/tune your current one
Remove inter-iterations dependences from your loop and make it unit-stride:
- If your arrays have 2 or more dimensions, check whether elements are accessed contiguously and, otherwise, try to permute loops accordingly: Fortran storage order is column-major: do i do j a(i,j) = b(i,j) (slow, non stride 1) => do i do j a(j,i) = b(i,j) (fast, stride 1)
- If your loop streams arrays of structures (AoS), try to use structures of arrays instead (SoA): do i a(i)%x = b(i)%x (slow, non stride 1) => do i a%x(i) = b%x(i) (fast, stride 1)

FMA

Detected 2 FMA (fused multiply-add) operations. Presence of both ADD/SUB and MUL operations.

Workaround

Try to change order in which elements are evaluated (using parentheses) in arithmetic expressions containing both ADD/SUB and MUL operations to enable your compiler to generate FMA instructions wherever possible. For instance a + b*c is a valid FMA (MUL then ADD). However (a+b)* c cannot be translated into an FMA (ADD then MUL).

Matching between your loop (in the source code) and the binary loop

The binary loop is composed of 29 FP arithmetical operations:

12: addition or subtraction (2 inside FMA instructions)
14: multiply (2 inside FMA instructions)
3: divide

The binary loop is loading 9 bytes.

Arithmetic intensity

Arithmetic intensity is 3.22 FP operations per loaded or stored byte.

General properties

nb instructions	133
nb uops	133
loop length	532
used w registers	9
used x registers	28
used b registers	0
used h registers	0
used s registers	6
used d registers	14
used q registers	0
used v registers	0
used z registers	0
nb stack references	11
ADD-SUB / MUL ratio	0.83

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	16.63 cycles
front end	16.63 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	4.00	4.00	11.75	11.75	11.75	11.75	13.50	13.50	13.50	13.50	8.83	8.50	8.67	0.50	0.50
cycles	4.00	4.00	11.75	11.75	11.75	11.75	13.50	13.50	13.50	13.50	8.83	8.50	8.67	0.50	0.50

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P7 (128 bits): VPU, ALU, FP store data
P8 (128 bits): VPU, ALU, DIV/SQRT
P9 (128 bits): ALU, VPU
P10 (256 bits): store address, load
P11 (256 bits): store address, load
P12 (256 bits): load
P13 (64 bits): store data
P14 (64 bits): store data

Cycles executing div or sqrt instructions

5.25-10.49

Cycles summary

Front-end	16.63
Dispatch	13.50
DIV/SQRT	5.25-10.49
Overall L1	16.63

Vectorization ratios

INT

all	0%
load	0%
store	0%
mul	0%
add-sub	0%
fma	0%
other	0%

all	0%
load	NA (no load vectorizable/vectorized instructions)
store	NA (no store vectorizable/vectorized instructions)
mul	0%
add-sub	0%
fma	0%
div/sqrt	0%
other	0%

INT+FP

all	0%
load	0%
store	0%
mul	0%
add-sub	0%
fma	0%
div/sqrt	0%
other	0%

Vector efficiency ratios

INT

all	22%
load	25%
store	25%
mul	25%
add-sub	16%
fma	25%
other	20%

all	25%
load	NA (no load vectorizable/vectorized instructions)
store	NA (no store vectorizable/vectorized instructions)
mul	25%
add-sub	25%
fma	25%
div/sqrt	25%
other	25%

INT+FP

all	23%
load	25%
store	25%
mul	25%
add-sub	21%
fma	25%
div/sqrt	25%
other	24%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 16.63 cycles. At this rate:

0% of peak load performance is reached (0.54 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))

Front-end bottlenecks

Performance is limited by instruction throughput (loading/decoding program instructions to execution core) (front-end is a bottleneck). By removing all these bottlenecks, you can lower the cost of an iteration from 16.63 to 13.50 cycles (1.23x speedup).

ASM code

In the binary file, the address of the loop is: 419720

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
LDR W8, [SP, #92]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDP W13, W9, [SP, #116]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W12, W9, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
ADD W17, W17, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
CMP W9, W8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (12.5%)
ADD W13, W13, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
B.EQ 41989c <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x9fc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X11, X9, [SP, #72]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDR X10, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
ORR X4, XZR, XZR	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X8, X11, W17,SXTW	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	N/A
STP W13, W12, [SP, #116]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
LDR X3, [SP, #48]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
MADD X5, X10, X8, X9	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
ADD X8, X11, W13,SXTW	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	N/A
LDP X13, X11, [SP, #56]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
MADD X6, X11, X8, X13	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
MUL X8, X10, X8	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	N/A
ADD X8, X9, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X7, X25, X8,LSL #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X26, X19, X8,LSL #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR W8, [SP, #88]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W8, W8, W12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR X12, [SP, #136]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
SBFM X9, X8, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD W28, W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
SUB W30, W8, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
SUB X9, X9, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MUL X27, X9, X10	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
SUB W10, W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
LDUR X8, [X29, #368]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
MUL X11, X9, X12	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
LDR D3, [X8, X9,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
SBFM X8, X10, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR X9, [SP, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X10, X8, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
MUL X12, X10, X12	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
B 419740 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x8a0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
FADD D5, D18, D17	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
SUB X3, X3, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
ADD X9, X9, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
CMP X3, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
FMUL D4, D4, D5	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
STR D4, [X6, X4,LSL #3]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	scal (25.0%)
ADD X4, X4, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
B.LE 419680 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x7e0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR D4, [X26, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
SUB X8, X9, X24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X8, X8, X27	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
FCMP D4, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
B.LE 419768 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x8c8>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD X18, X5, X4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X15, XZR, X10	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X23, XZR, X12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR W13, WZR, W30	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
B 419790 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x8f0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X13, [SP, #152]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ORR X18, XZR, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X8, X5, X4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X23, XZR, X11	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR W13, [X13]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W13, W13, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
CMP W28, W13	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (12.5%)
CSEL W13, W28, W13, #11	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SBFM X15, X13, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SUB X15, X15, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X23, X2, X23,LSL #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SBFM X13, X13, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
FABS D5, D4	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
LDR D16, [X20, X18,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
LDR D7, [X23, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
LDUR X23, [X29, #368]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR D6, [X23, X15,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
SUB X15, X13, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MADD X13, X16, X15, X1	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
FDIV D18, D5, D7	1	0	0	0	0	0	0	0.50	0	0.50	0	0	0	0	0	0	7-15	1.75-3.50	scal (25.0%)
LDR D17, [X13, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
FDIV D6, D3, D6	1	0	0	0	0	0	0	0.50	0	0.50	0	0	0	0	0	0	7-15	1.75-3.50	scal (25.0%)
FSUB D19, D16, S17	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
LDR D17, [X20, X8,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
FSUB D20, D17, S16	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
MOVI D17, #0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FADD D5, D18, D1	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D21, D19, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D21, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
MOVI D21, #0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D5, D5, D6	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FSUB D6, D2, S18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
B.LE 419824 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x984>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
FSUB D18, D1, S18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCMP D20, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FABS D20, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FABS D19, D19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FNEG D21, D18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCSEL D18, D18, D21, #8	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D21, D6, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D19, D20	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FMADD D21, D5, D19, D21	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	4	0.25	scal (25.0%)
FCSEL D19, D19, D20, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D21, D21, D0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D19, D21	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FCSEL D19, D19, D21, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D21, D18, D19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FADD D18, D16, D21	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
MADD X13, X16, X15, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
LDR D20, [X22, X8,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
FMUL D4, D4, D18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
LDR D18, [X22, X18,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
LDR D19, [X13, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
STR D4, [X7, X4,LSL #3]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	scal (25.0%)
FSUB D19, D18, S19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FSUB D20, D20, S18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D21, D19, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D21, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
B.LE 419720 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x880>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
FMUL D7, D7, D16	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FABS D17, D4	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCMP D20, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FDIV D7, D17, D7	1	0	0	0	0	0	0	0.50	0	0.50	0	0	0	0	0	0	7-15	1.75-3.50	scal (25.0%)
FABS D17, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D6, D6, D17	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FSUB D7, D1, S7	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FNEG D16, D7	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCSEL D7, D7, D16, #8	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FABS D16, D19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMADD D5, D5, D16, D6	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	4	0.25	scal (25.0%)
FCMP D16, D17	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FCSEL D6, D16, D17, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D5, D5, D0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D6, D5	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FCSEL D5, D6, D5, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D17, D7, D5	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
B 419720 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x880>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

Function	_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par
Source file and lines	advec_cell_kernel.f90:199-246
Module	exec

Ignoring paths for analysis
Failed to get the number of paths
RecMII not computed since number of paths is unknown or > max_paths
Streams not analyzed since number of paths is unknown or > max_paths

gain
potential
hint
expert

Code clean check

Detected a slowdown caused by scalar integer instructions (typically used for address computation). By removing them, you can lower the cost of an iteration from 16.63 to 4.00 cycles (4.16x speedup).

Workaround

Try to reorganize arrays of structures to structures of arrays
Consider to permute loops (see vectorization gain report)
To reference allocatable arrays, use "allocatable" instead of "pointer" pointers or qualify them with the "contiguous" attribute (Fortran 2008)
For structures, limit to one indirection. For example, use a_b%c instead of a%b%c with a_b set to a%b before this loop

Vectorization

Details

All VPU instructions are used in scalar version (process only one data element in vector registers). Since your execution units are vector units, only a vectorized loop can use their full power.

Workaround

Try another compiler or update/tune your current one
Remove inter-iterations dependences from your loop and make it unit-stride:
- If your arrays have 2 or more dimensions, check whether elements are accessed contiguously and, otherwise, try to permute loops accordingly: Fortran storage order is column-major: do i do j a(i,j) = b(i,j) (slow, non stride 1) => do i do j a(j,i) = b(i,j) (fast, stride 1)
- If your loop streams arrays of structures (AoS), try to use structures of arrays instead (SoA): do i a(i)%x = b(i)%x (slow, non stride 1) => do i a%x(i) = b%x(i) (fast, stride 1)

FMA

Detected 2 FMA (fused multiply-add) operations. Presence of both ADD/SUB and MUL operations.

Workaround

Matching between your loop (in the source code) and the binary loop

The binary loop is composed of 29 FP arithmetical operations:

12: addition or subtraction (2 inside FMA instructions)
14: multiply (2 inside FMA instructions)
3: divide

The binary loop is loading 9 bytes.

Arithmetic intensity

Arithmetic intensity is 3.22 FP operations per loaded or stored byte.

General properties

nb instructions	133
nb uops	133
loop length	532
used w registers	9
used x registers	28
used b registers	0
used h registers	0
used s registers	6
used d registers	14
used q registers	0
used v registers	0
used z registers	0
nb stack references	11
ADD-SUB / MUL ratio	0.83

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	16.63 cycles
front end	16.63 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	4.00	4.00	11.75	11.75	11.75	11.75	13.50	13.50	13.50	13.50	8.83	8.50	8.67	0.50	0.50
cycles	4.00	4.00	11.75	11.75	11.75	11.75	13.50	13.50	13.50	13.50	8.83	8.50	8.67	0.50	0.50

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P7 (128 bits): VPU, ALU, FP store data
P8 (128 bits): VPU, ALU, DIV/SQRT
P9 (128 bits): ALU, VPU
P10 (256 bits): store address, load
P11 (256 bits): store address, load
P12 (256 bits): load
P13 (64 bits): store data
P14 (64 bits): store data

Cycles executing div or sqrt instructions

5.25-10.49

Cycles summary

Front-end	16.63
Dispatch	13.50
DIV/SQRT	5.25-10.49
Overall L1	16.63

Vectorization ratios

INT

all	0%
load	0%
store	0%
mul	0%
add-sub	0%
fma	0%
other	0%

all	0%
load	NA (no load vectorizable/vectorized instructions)
store	NA (no store vectorizable/vectorized instructions)
mul	0%
add-sub	0%
fma	0%
div/sqrt	0%
other	0%

INT+FP

all	0%
load	0%
store	0%
mul	0%
add-sub	0%
fma	0%
div/sqrt	0%
other	0%

Vector efficiency ratios

INT

all	22%
load	25%
store	25%
mul	25%
add-sub	16%
fma	25%
other	20%

all	25%
load	NA (no load vectorizable/vectorized instructions)
store	NA (no store vectorizable/vectorized instructions)
mul	25%
add-sub	25%
fma	25%
div/sqrt	25%
other	25%

INT+FP

all	23%
load	25%
store	25%
mul	25%
add-sub	21%
fma	25%
div/sqrt	25%
other	24%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 16.63 cycles. At this rate:

0% of peak load performance is reached (0.54 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))

Front-end bottlenecks

ASM code

In the binary file, the address of the loop is: 419720

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
LDR W8, [SP, #92]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDP W13, W9, [SP, #116]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W12, W9, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
ADD W17, W17, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
CMP W9, W8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (12.5%)
ADD W13, W13, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
B.EQ 41989c <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x9fc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X11, X9, [SP, #72]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDR X10, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
ORR X4, XZR, XZR	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X8, X11, W17,SXTW	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	N/A
STP W13, W12, [SP, #116]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
LDR X3, [SP, #48]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
MADD X5, X10, X8, X9	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
ADD X8, X11, W13,SXTW	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	N/A
LDP X13, X11, [SP, #56]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
MADD X6, X11, X8, X13	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
MUL X8, X10, X8	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	N/A
ADD X8, X9, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X7, X25, X8,LSL #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X26, X19, X8,LSL #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR W8, [SP, #88]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W8, W8, W12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR X12, [SP, #136]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
SBFM X9, X8, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD W28, W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
SUB W30, W8, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
SUB X9, X9, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MUL X27, X9, X10	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
SUB W10, W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
LDUR X8, [X29, #368]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
MUL X11, X9, X12	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
LDR D3, [X8, X9,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
SBFM X8, X10, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR X9, [SP, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X10, X8, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
MUL X12, X10, X12	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
B 419740 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x8a0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
FADD D5, D18, D17	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
SUB X3, X3, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
ADD X9, X9, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
CMP X3, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
FMUL D4, D4, D5	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
STR D4, [X6, X4,LSL #3]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	scal (25.0%)
ADD X4, X4, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
B.LE 419680 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x7e0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR D4, [X26, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
SUB X8, X9, X24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X8, X8, X27	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
FCMP D4, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
B.LE 419768 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x8c8>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD X18, X5, X4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X15, XZR, X10	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X23, XZR, X12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR W13, WZR, W30	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
B 419790 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x8f0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X13, [SP, #152]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ORR X18, XZR, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X8, X5, X4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X23, XZR, X11	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR W13, [X13]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W13, W13, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
CMP W28, W13	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (12.5%)
CSEL W13, W28, W13, #11	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SBFM X15, X13, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SUB X15, X15, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X23, X2, X23,LSL #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SBFM X13, X13, #0, #31	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
FABS D5, D4	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
LDR D16, [X20, X18,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
LDR D7, [X23, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
LDUR X23, [X29, #368]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR D6, [X23, X15,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
SUB X15, X13, X14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MADD X13, X16, X15, X1	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
FDIV D18, D5, D7	1	0	0	0	0	0	0	0.50	0	0.50	0	0	0	0	0	0	7-15	1.75-3.50	scal (25.0%)
LDR D17, [X13, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
FDIV D6, D3, D6	1	0	0	0	0	0	0	0.50	0	0.50	0	0	0	0	0	0	7-15	1.75-3.50	scal (25.0%)
FSUB D19, D16, S17	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
LDR D17, [X20, X8,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
FSUB D20, D17, S16	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
MOVI D17, #0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FADD D5, D18, D1	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D21, D19, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D21, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
MOVI D21, #0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D5, D5, D6	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FSUB D6, D2, S18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
B.LE 419824 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x984>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
FSUB D18, D1, S18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCMP D20, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FABS D20, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FABS D19, D19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FNEG D21, D18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCSEL D18, D18, D21, #8	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D21, D6, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D19, D20	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FMADD D21, D5, D19, D21	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	4	0.25	scal (25.0%)
FCSEL D19, D19, D20, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D21, D21, D0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D19, D21	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FCSEL D19, D19, D21, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D21, D18, D19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FADD D18, D16, D21	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
MADD X13, X16, X15, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
LDR D20, [X22, X8,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
FMUL D4, D4, D18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
LDR D18, [X22, X18,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
LDR D19, [X13, X4,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	scal (25.0%)
STR D4, [X7, X4,LSL #3]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	scal (25.0%)
FSUB D19, D18, S19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FSUB D20, D20, S18	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D21, D19, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D21, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
B.LE 419720 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x880>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
FMUL D7, D7, D16	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FABS D17, D4	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCMP D20, #0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FDIV D7, D17, D7	1	0	0	0	0	0	0	0.50	0	0.50	0	0	0	0	0	0	7-15	1.75-3.50	scal (25.0%)
FABS D17, D20	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMUL D6, D6, D17	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FSUB D7, D1, S7	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FNEG D16, D7	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FCSEL D7, D7, D16, #8	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FABS D16, D19	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
FMADD D5, D5, D16, D6	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	4	0.25	scal (25.0%)
FCMP D16, D17	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FCSEL D6, D16, D17, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D5, D5, D0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
FCMP D6, D5	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
FCSEL D5, D6, D5, #4	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (25.0%)
FMUL D17, D7, D5	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	3	0.25	scal (25.0%)
B 419720 <_QMadvec_cell_kernel_modulePadvec_cell_kernel..omp_par+0x880>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

Report Configuration

Code clean check

Workaround

Vectorization

Details

Workaround

FMA

Workaround

Matching between your loop (in the source code) and the binary loop

Arithmetic intensity

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code

Code clean check

Workaround

Vectorization

Details

Workaround

FMA

Workaround

Matching between your loop (in the source code) and the binary loop

Arithmetic intensity

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code