OV - exec - Function advec_cell_kernel(int, int, int, int, int, int, clover::Buffer1D<double>&, clover::Buffer1D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&) [clone .omp

	Function: advec_cell_kernel(int, int, int, int, int, int, clover::Buffer1D<double>&, clover::Buffer1 ...	Module: exec	Source: advec_cell.cpp:208-216 [...]	Coverage (incl. loops): 4.00% \| (excl. loops): 0.00%

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp: 208 - 216

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

208: #pragma omp parallel for simd collapse(2)

209:     for (int j = (y_min + 1); j < (y_max + 2); j++) {

210:       for (int i = (x_min + 1); i < (x_max + 2); i++) {

211:         double pre_mass_s = density1(i, j) * pre_vol(i, j);

212:         double post_mass_s = pre_mass_s + mass_flux_y(i, j) - mass_flux_y(i + 0, j + 1);

213:         double post_ener_s = (energy1(i, j) * pre_mass_s + ener_flux(i, j) - ener_flux(i + 0, j + 1)) / post_mass_s;

214:         double advec_vol_s = pre_vol(i, j) + vol_flux_y(i, j) - vol_flux_y(i + 0, j + 1);

215:         density1(i, j) = post_mass_s / advec_vol_s;

216:         energy1(i, j) = post_ener_s;

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/context.h: 69 - 69

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

69:   T &operator()(size_t i, size_t j) const { return data[i + j * sizeX]; }

0x428dc0 SUB	SP, SP, #160

0x428dc4 STP	D13, D12, [SP, #32]

0x428dc8 STP	D11, D10, [SP, #48]

0x428dcc STP	D9, D8, [SP, #64]

0x428dd0 STP	X29, X30, [SP, #80]

0x428dd4 STR	X25, [SP, #96]

0x428dd8 STP	X24, X23, [SP, #112]

0x428ddc STP	X22, X21, [SP, #128]

0x428de0 STP	X20, X19, [SP, #144]

0x428de4 ADD	X29, SP, #80

0x428de8 LDR	W8, [X2]

0x428dec LDR	W9, [X4]

0x428df0 ADD	W22, W8, #1

0x428df4 LDR	W8, [X3]

0x428df8 ADD	W23, W9, #1

0x428dfc LDR	W9, [X5]

0x428e00 ADD	W8, W8, #2

0x428e04 ADD	W9, W9, #2

0x428e08 SUBS	W8, W8, W22

0x428e0c CCMP	W9, W23, #4, #12

0x428e10 B.LE	429030

0x428e14 LDR	W19, [X0]

0x428e18 SUB	W24, W9, W23

0x428e1c MOVN	X9, #0

0x428e20 ORR	X20, XZR, X7

0x428e24 ORR	X21, XZR, X6

0x428e28 ADRP	X0,

0x428e2c ADD	X0, X0, #3552

0x428e30 ORR	W1, WZR, W19

0x428e34 UMADDL	X25, W24, W8, X9

0x428e38 MOVZ	W8, #1

0x428e3c ADD	X3, SP, #12

0x428e40 ADD	X4, X29, #24

0x428e44 ADD	X5, SP, #24

0x428e48 ADD	X6, SP, #16

0x428e4c MOVZ	W2, #34

0x428e50 MOVZ	W7, #1

0x428e54 STR	XZR, [X29, #24]

0x428e58 STP	X8, X25, [SP, #16]

0x428e5c STR	WZR, [SP, #12]

0x428e60 STR	X8, [SP]

0x428e64 BL	410680

0x428e68 LDR	X8, [SP, #24]

0x428e6c LDR	X11, [X29, #24]

0x428e70 CMP	X8, X25

0x428e74 CSEL	X9, X8, X25, #11

0x428e78 CMP	X11, X9

0x428e7c STR	X9, [SP, #24]

0x428e80 B.GT	429020

0x428e84 LDP	X12, X10, [X29, #96]

0x428e88 LDP	X14, X13, [X29, #80]

0x428e8c CNTD	X8, ALL

0x428e90 SUB	X9, X9, X11

0x428e94 PTRUE	P0.D, ALL

0x428e98 LDR	X15, [X21, #16]

0x428e9c ADD	X0, X9, #1

0x428ea0 LDR	X16, [X20, #16]

0x428ea4 DUP	Z19.D, #1

0x428ea8 SUBS	X9, X0, X8

0x428eac INDEX	Z26.D, X11, #1

0x428eb0 LD1RD	{Z0.D}, P0/Z, [X21]

0x428eb4 LD1RD	{Z1.D}, P0/Z, [X20]

0x428eb8 CSEL	X9, XZR, X9, #3

0x428ebc LDR	X17, [X14, #16]

0x428ec0 LDR	X18, [X13, #16]

0x428ec4 WHILELO	P1.D, XZR, X0

0x428ec8 LDR	X0, [X12, #16]

0x428ecc LDR	X1, [X10, #16]

0x428ed0 LD1RD	{Z2.D}, P0/Z, [X14]

0x428ed4 LD1RD	{Z3.D}, P0/Z, [X13]

0x428ed8 LD1RD	{Z5.D}, P0/Z, [X12]

0x428edc LD1RD	{Z6.D}, P0/Z, [X10]

0x428ee0 ADD	W10, W22, #1

0x428ee4 DUP	Z4.D, X24

0x428ee8 DUP	Z7.D, X22

0x428eec DUP	Z16.D, X23

0x428ef0 DUP	Z17.D, X8

0x428ef4 DUP	Z20.D, X15

0x428ef8 DUP	Z21.D, X16

0x428efc DUP	Z18.D, X10

0x428f00 SUB	X10, XZR, X8

0x428f04 DUP	Z22.D, X17

0x428f08 DUP	Z23.D, X18

0x428f0c DUP	Z24.D, X0

0x428f10 DUP	Z25.D, X1

0x428f14 HINT	#0

0x428f18 HINT	#0

0x428f1c HINT	#0

(155) 0x428f20 SEL	Z27.D, P1, Z4.D, Z19.D

(155) 0x428f24 ADD	X10, X10, X8

(155) 0x428f28 SDIVR	Z27.D, P0/M, Z27.D, Z26.D

(155) 0x428f2c ADD	Z28.D, Z7.D, Z27.D

(155) 0x428f30 MOVPRFX	Z29, Z26

(155) 0x428f34 MLS	Z29.D, P0/M, Z27.D, Z4.D

(155) 0x428f38 ADD	Z27.D, Z27.D, Z18.D

(155) 0x428f3c ADD	Z26.D, Z26.D, Z17.D

(155) 0x428f40 SXTW	Z28.D, P0/M, Z28.D

(155) 0x428f44 SXTW	Z27.D, P0/M, Z27.D

(155) 0x428f48 MOVPRFX	Z8, Z1

(155) 0x428f4c MUL	Z8.D, P0/M, Z8.D, Z28.D

(155) 0x428f50 MOVPRFX	Z30, Z0

(155) 0x428f54 MUL	Z30.D, P0/M, Z30.D, Z28.D

(155) 0x428f58 MOVPRFX	Z11, Z2

(155) 0x428f5c MUL	Z11.D, P0/M, Z11.D, Z27.D

(155) 0x428f60 MOVPRFX	Z12, Z5

(155) 0x428f64 MUL	Z12.D, P0/M, Z12.D, Z28.D

(155) 0x428f68 ADD	Z29.D, Z16.D, Z29.D

(155) 0x428f6c ADR	Z9.D, [Z21, Z29.D,SXTW #3]

(155) 0x428f70 ADR	Z31.D, [Z20, Z29.D,SXTW #3]

(155) 0x428f74 ADR	Z10.D, [Z22, Z29.D,SXTW #3]

(155) 0x428f78 ADR	Z13.D, [Z24, Z29.D,SXTW #3]

(155) 0x428f7c ADR	Z8.D, [Z9, Z8.D,LSL #3]

(155) 0x428f80 MOVPRFX	Z9, Z2

(155) 0x428f84 MUL	Z9.D, P0/M, Z9.D, Z28.D

(155) 0x428f88 ADR	Z30.D, [Z31, Z30.D,LSL #3]

(155) 0x428f8c ADR	Z12.D, [Z13, Z12.D,LSL #3]

(155) 0x428f90 ADR	Z9.D, [Z10, Z9.D,LSL #3]

(155) 0x428f94 ADR	Z10.D, [Z10, Z11.D,LSL #3]

(155) 0x428f98 LD1D	{Z31.D}, P1/Z, [V30.D]

(155) 0x428f9c LD1D	{Z8.D}, P1/Z, [V8.D]

(155) 0x428fa0 ADR	Z11.D, [Z23, Z29.D,SXTW #3]

(155) 0x428fa4 LD1D	{Z12.D}, P1/Z, [V12.D]

(155) 0x428fa8 ADR	Z29.D, [Z25, Z29.D,SXTW #3]

(155) 0x428fac FMUL	Z31.D, Z8.D, Z31.D

(155) 0x428fb0 LD1D	{Z9.D}, P1/Z, [V9.D]

(155) 0x428fb4 LD1D	{Z10.D}, P1/Z, [V10.D]

(155) 0x428fb8 FADD	Z9.D, Z9.D, Z31.D

(155) 0x428fbc FSUB	Z9.D, Z9.D, Z10.D

(155) 0x428fc0 MOVPRFX	Z10, Z3

(155) 0x428fc4 MUL	Z10.D, P0/M, Z10.D, Z28.D

(155) 0x428fc8 MUL	Z28.D, P0/M, Z28.D, Z6.D

(155) 0x428fcc ADR	Z10.D, [Z11, Z10.D,LSL #3]

(155) 0x428fd0 ADR	Z28.D, [Z29, Z28.D,LSL #3]

(155) 0x428fd4 LD1D	{Z11.D}, P1/Z, [V10.D]

(155) 0x428fd8 LD1D	{Z28.D}, P1/Z, [V28.D]

(155) 0x428fdc FMAD	Z31.D, P0/M, Z11.D, Z12.D

(155) 0x428fe0 MOVPRFX	Z11, Z5

(155) 0x428fe4 MUL	Z11.D, P0/M, Z11.D, Z27.D

(155) 0x428fe8 MUL	Z27.D, P0/M, Z27.D, Z6.D

(155) 0x428fec FADD	Z28.D, Z28.D, Z8.D

(155) 0x428ff0 ADR	Z11.D, [Z13, Z11.D,LSL #3]

(155) 0x428ff4 ADR	Z27.D, [Z29, Z27.D,LSL #3]

(155) 0x428ff8 LD1D	{Z11.D}, P1/Z, [V11.D]

(155) 0x428ffc LD1D	{Z27.D}, P1/Z, [V27.D]

(155) 0x429000 FSUB	Z31.D, Z31.D, Z11.D

(155) 0x429004 FSUB	Z27.D, Z28.D, Z27.D

(155) 0x429008 FDIV	Z31.D, P0/M, Z31.D, Z9.D

(155) 0x42900c FDIVR	Z27.D, P0/M, Z27.D, Z9.D

(155) 0x429010 ST1D	{Z27.D}, P1, [V30.D]

(155) 0x429014 ST1D	{Z31.D}, P1, [V10.D]

(155) 0x429018 WHILELO	P1.D, X10, X9

(155) 0x42901c B.MI	428f20

0x429020 ADRP	X0,

0x429024 ADD	X0, X0, #3576

0x429028 ORR	W1, WZR, W19

0x42902c BL	4105b0

0x429030 LDP	D9, D8, [SP, #64]

0x429034 LDP	D11, D10, [SP, #48]

0x429038 LDP	D13, D12, [SP, #32]

0x42903c LDR	X25, [SP, #96]

0x429040 LDP	X20, X19, [SP, #144]

0x429044 LDP	X22, X21, [SP, #128]

0x429048 LDP	X24, X23, [SP, #112]

0x42904c LDP	X29, X30, [SP, #80]

0x429050 ADD	SP, SP, #160

0x429054 RET

0x429058 HINT	#0

0x42905c HINT	#0

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 /

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

The code analyzed by CQA in that panel excludes loops and represents 0.00% of application time for run armclang_1

Source file and lines	advec_cell.cpp:208-216
Module	exec

The function is defined in:

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:208-216
/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/context.h:69

Warnings:
Ignoring paths for analysis

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 15.00 to 12.00 cycles (1.25x speedup).

Workaround

Try to reorganize arrays of structures to structures of arrays
Consider to permute loops (see vectorization gain report)

Vectorization

Your function is not vectorized. Only 27% of vector register length is used (average across all VPU instructions). By fully vectorizing your function, you can lower the cost of an iteration from 15.00 to 7.28 cycles (2.06x speedup).

Details

8% of VPU instructions are used in vector version (process two or more data elements in vector registers):

13% of VPU loads are used in vector version.
23% of VPU stores are used in vector version.
0% of VPU addition or subtraction instructions are used in vector version.
0% of VPU fused multiply-add instructions are used in vector version.
0% of VPU instructions that are not load, store, addition, subtraction nor multiply instructions are used in vector version.

Since your execution units are vector units, only a fully vectorized function can use their full power.

Workaround

Try another compiler or update/tune your current one
Make array accesses unit-stride:
- If your function streams arrays of structures (AoS), try to use structures of arrays instead (SoA): for(i) a[i].x = b[i].x; (slow, non stride 1) => for(i) a.x[i] = b.x[i]; (fast, stride 1)

No data for this section

CALL instructions

Detected function call instructions.

Details

Calling (and then returning from) a function prevents many compiler optimizations (like vectorization), breaks control flow (which reduces pipeline performance) and executes extra instructions to save/restore the registers used inside it, which is very expensive (dozens of cycles). Consider to inline small functions.

unknown: 2 occurrences►
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:208
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:208

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

The binary function does not contain any FP arithmetical operations. The binary function is loading 15 bytes. The binary function is storing 3 bytes.

General properties

nb instructions	104
nb uops	99
loop length	416
used w registers	11
used x registers	29
used b registers	0
used h registers	0
used s registers	1
used d registers	6
used q registers	0
used v registers	0
used z registers	19
nb stack references	21

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	12.38 cycles
front end	12.38 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	2.50	2.50	12.50	12.25	15.00	12.25	2.50	2.50	0.00	0.00	14.17	13.83	14.00	5.00	5.00
cycles	2.50	2.50	12.50	12.25	15.00	12.25	2.50	2.50	0.00	0.00	14.17	13.83	14.00	5.00	5.00

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

Cycles summary

Front-end	12.38
Dispatch	15.00
Overall L1	15.00

Vectorization ratios

all	8%
load	13%
store	23%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	0%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	0%

Vector efficiency ratios

all	27%
load	26%
store	39%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	16%
fma	25%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	24%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 15.00 cycles. At this rate:

1% of peak load performance is reached (1.00 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
0% of peak store performance is reached (0.20 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

Found no such bottlenecks.

ASM code

In the binary file, the address of the function is: 428dc0

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
SUB SP, SP, #160	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
STP D13, D12, [SP, #32]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D11, D10, [SP, #48]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D9, D8, [SP, #64]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP X29, X30, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STR X25, [SP, #96]	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%)
STP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ADD X29, SP, #80	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, [X2]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
LDR W9, [X4]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W22, 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%)
LDR W8, [X3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W23, 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%)
LDR W9, [X5]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W8, 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%)
ADD W9, W9, #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%)
SUBS W8, W8, W22	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%)
CCMP W9, W23, #4, #12	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%)
B.LE 429030 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.13+0x270>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR W19, [X0]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
SUB W24, W9, W23	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%)
MOVN X9, #0	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%)
ORR X20, XZR, X7	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 X21, XZR, X6	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
ADRP X0, <47ce28>	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 X0, X0, #3552	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 W1, WZR, W19	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%)
UMADDL X25, W24, W8, X9	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
MOVZ 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%)
ADD X3, SP, #12	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 X4, X29, #24	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 X5, SP, #24	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 X6, SP, #16	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%)
MOVZ W2, #34	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
MOVZ W7, #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%)
STR XZR, [X29, #24]	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%)
STP X8, X25, [SP, #16]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STR WZR, [SP, #12]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (12.5%)
STR X8, [SP]	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%)
BL 410680 <@plt_start@+0x660>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X8, [SP, #24]	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%)
LDR X11, [X29, #24]	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%)
CMP X8, X25	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%)
CSEL X9, X8, X25, #11	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%)
CMP X11, X9	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%)
STR X9, [SP, #24]	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%)
B.GT 429020 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.13+0x260>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X12, X10, [X29, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X14, X13, [X29, #80]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
CNTD X8, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
SUB X9, X9, X11	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%)
PTRUE P0.D, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (100.0%)
LDR X15, [X21, #16]	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%)
ADD X0, 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
LDR X16, [X20, #16]	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%)
DUP Z19.D, #1	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (3.1%)
SUBS X9, X0, X8	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%)
INDEX Z26.D, X11, #1	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	5	2	N/A
LD1RD {Z0.D}, P0/Z, [X21]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z1.D}, P0/Z, [X20]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
CSEL X9, XZR, X9, #3	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%)
LDR X17, [X14, #16]	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%)
LDR X18, [X13, #16]	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%)
WHILELO P1.D, XZR, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	2	N/A
LDR X0, [X12, #16]	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 X1, [X10, #16]	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%)
LD1RD {Z2.D}, P0/Z, [X14]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z3.D}, P0/Z, [X13]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z5.D}, P0/Z, [X12]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z6.D}, P0/Z, [X10]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
ADD W10, W22, #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
DUP Z4.D, X24	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z7.D, X22	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z16.D, X23	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z17.D, X8	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z20.D, X15	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z21.D, X16	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z18.D, X10	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
SUB X10, 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
DUP Z22.D, X17	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z23.D, X18	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z24.D, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z25.D, X1	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
HINT #0																			N/A
HINT #0																			N/A
HINT #0																			N/A
ADRP X0, <47c020>	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 X0, X0, #3576	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 W1, WZR, W19	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%)
BL 4105b0 <@plt_start@+0x590>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP D9, D8, [SP, #64]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D11, D10, [SP, #48]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D13, D12, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDR X25, [SP, #96]	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%)
LDP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X29, X30, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
ADD SP, SP, #160	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
RET	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
HINT #0																			N/A
HINT #0																			N/A

The code analyzed by CQA in that panel excludes loops and represents 0.00% of application time for run armclang_1

Source file and lines	advec_cell.cpp:208-216
Module	exec

The function is defined in:

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:208-216
/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/context.h:69

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Code clean check

Workaround

Try to reorganize arrays of structures to structures of arrays
Consider to permute loops (see vectorization gain report)

Vectorization

Details

8% of VPU instructions are used in vector version (process two or more data elements in vector registers):

13% of VPU loads are used in vector version.
23% of VPU stores are used in vector version.
0% of VPU addition or subtraction instructions are used in vector version.
0% of VPU fused multiply-add instructions are used in vector version.
0% of VPU instructions that are not load, store, addition, subtraction nor multiply instructions are used in vector version.

Since your execution units are vector units, only a fully vectorized function can use their full power.

Workaround

Try another compiler or update/tune your current one
Make array accesses unit-stride:
- If your function streams arrays of structures (AoS), try to use structures of arrays instead (SoA): for(i) a[i].x = b[i].x; (slow, non stride 1) => for(i) a.x[i] = b.x[i]; (fast, stride 1)

No data for this section

CALL instructions

Detected function call instructions.

Details

unknown: 2 occurrences►
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:208
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:208

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

The binary function does not contain any FP arithmetical operations. The binary function is loading 15 bytes. The binary function is storing 3 bytes.

General properties

nb instructions	104
nb uops	99
loop length	416
used w registers	11
used x registers	29
used b registers	0
used h registers	0
used s registers	1
used d registers	6
used q registers	0
used v registers	0
used z registers	19
nb stack references	21

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	12.38 cycles
front end	12.38 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	2.50	2.50	12.50	12.25	15.00	12.25	2.50	2.50	0.00	0.00	14.17	13.83	14.00	5.00	5.00
cycles	2.50	2.50	12.50	12.25	15.00	12.25	2.50	2.50	0.00	0.00	14.17	13.83	14.00	5.00	5.00

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

Cycles summary

Front-end	12.38
Dispatch	15.00
Overall L1	15.00

Vectorization ratios

all	8%
load	13%
store	23%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	0%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	0%

Vector efficiency ratios

all	27%
load	26%
store	39%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	16%
fma	25%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	24%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 15.00 cycles. At this rate:

1% of peak load performance is reached (1.00 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
0% of peak store performance is reached (0.20 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

Found no such bottlenecks.

ASM code

In the binary file, the address of the function is: 428dc0

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
SUB SP, SP, #160	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
STP D13, D12, [SP, #32]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D11, D10, [SP, #48]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D9, D8, [SP, #64]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP X29, X30, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STR X25, [SP, #96]	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%)
STP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ADD X29, SP, #80	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, [X2]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
LDR W9, [X4]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W22, 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%)
LDR W8, [X3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W23, 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%)
LDR W9, [X5]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W8, 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%)
ADD W9, W9, #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%)
SUBS W8, W8, W22	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%)
CCMP W9, W23, #4, #12	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%)
B.LE 429030 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.13+0x270>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR W19, [X0]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
SUB W24, W9, W23	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%)
MOVN X9, #0	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%)
ORR X20, XZR, X7	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 X21, XZR, X6	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
ADRP X0, <47ce28>	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 X0, X0, #3552	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 W1, WZR, W19	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%)
UMADDL X25, W24, W8, X9	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
MOVZ 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%)
ADD X3, SP, #12	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 X4, X29, #24	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 X5, SP, #24	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 X6, SP, #16	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%)
MOVZ W2, #34	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
MOVZ W7, #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%)
STR XZR, [X29, #24]	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%)
STP X8, X25, [SP, #16]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STR WZR, [SP, #12]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (12.5%)
STR X8, [SP]	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%)
BL 410680 <@plt_start@+0x660>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X8, [SP, #24]	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%)
LDR X11, [X29, #24]	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%)
CMP X8, X25	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%)
CSEL X9, X8, X25, #11	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%)
CMP X11, X9	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%)
STR X9, [SP, #24]	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%)
B.GT 429020 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.13+0x260>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X12, X10, [X29, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X14, X13, [X29, #80]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
CNTD X8, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
SUB X9, X9, X11	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%)
PTRUE P0.D, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (100.0%)
LDR X15, [X21, #16]	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%)
ADD X0, 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
LDR X16, [X20, #16]	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%)
DUP Z19.D, #1	1	0	0	0	0	0	0	0.50	0.50	0	0	0	0	0	0	0	2	0.50	scal (3.1%)
SUBS X9, X0, X8	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%)
INDEX Z26.D, X11, #1	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	5	2	N/A
LD1RD {Z0.D}, P0/Z, [X21]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z1.D}, P0/Z, [X20]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
CSEL X9, XZR, X9, #3	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%)
LDR X17, [X14, #16]	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%)
LDR X18, [X13, #16]	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%)
WHILELO P1.D, XZR, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	2	N/A
LDR X0, [X12, #16]	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 X1, [X10, #16]	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%)
LD1RD {Z2.D}, P0/Z, [X14]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z3.D}, P0/Z, [X13]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z5.D}, P0/Z, [X12]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z6.D}, P0/Z, [X10]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
ADD W10, W22, #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
DUP Z4.D, X24	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z7.D, X22	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z16.D, X23	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z17.D, X8	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z20.D, X15	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z21.D, X16	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z18.D, X10	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
SUB X10, 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
DUP Z22.D, X17	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z23.D, X18	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z24.D, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z25.D, X1	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
HINT #0																			N/A
HINT #0																			N/A
HINT #0																			N/A
ADRP X0, <47c020>	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 X0, X0, #3576	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 W1, WZR, W19	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%)
BL 4105b0 <@plt_start@+0x590>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP D9, D8, [SP, #64]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D11, D10, [SP, #48]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D13, D12, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDR X25, [SP, #96]	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%)
LDP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X29, X30, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
ADD SP, SP, #160	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
RET	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
HINT #0																			N/A
HINT #0																			N/A

Name	Coverage (%)	Time (s)
▼advec_cell_kernel(int, int, int, int, int, int, clover::Buffer1D&, clover::Buffer1D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D–	4.00	5.57
○Loop 155 - advec_cell.cpp:209-216 - exec	4.00	5.44

Report Configuration

Code clean check

Workaround

Vectorization

Details

Workaround

CALL instructions

Details

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

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

CALL instructions

Details

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code