Implementation notes: amd64, cezanne, crypto_kem/titaniumccatoy

Computer: cezanne
Microarchitecture: amd64; Zen 3 (a50f00)
Architecture: amd64
CPU ID: AuthenticAMD-00a50f00-178bfbff
SUPERCOP version: 20240716
Operation: crypto_kem
Primitive: titaniumccatoy

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
1394189	59285 0 64	220464 788 1816	`T:avx2`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
1416253	58918 0 64	218024 788 1816	`T:avx2`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
1420558	59002 0 64	218632 788 1816	`T:avx2`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
2022602	72082 0 36	233440 820 1752	`T:opt`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
2070033	63281 0 36	224512 820 1752	`T:opt`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
2277952	33438 0 36	192126 812 1752	`T:opt`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
2313549	35050 0 64	194376 788 1816	`T:opt`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
2331374	62977 0 36	224176 820 1752	`T:opt`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
2355465	58257 0 64	219256 788 1816	`T:opt`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
2564668	35094 0 64	194928 788 1816	`T:opt`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
152164782	42263 0 64	203312 788 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
152319192	24216 0 64	183912 788 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
152775009	24603 0 36	183614 812 1752	`T:ref`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
153378119	39865 0 36	201296 820 1752	`T:ref`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
153401943	65858 0 36	227424 820 1752	`T:ref`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
153404882	56447 0 36	217696 820 1752	`T:ref`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
154897917	24689 0 36	183286 812 1752	`T:ref`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
157699520	24275 0 64	183488 788 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716
202113554	23147 0 64	181248 780 1784	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240719	20240716

Compiler output

encrypt.c: In file included from encrypt.c:18:
encrypt.c: In file included from /usr/lib/llvm-11/lib/clang/11.0.1/include/x86intrin.h:13:
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:210:16: error: expected identifier or '('
encrypt.c:   unsigned int D;
encrypt.c:                ^
encrypt.c: ./param.h:29:11: note: expanded from macro 'D'
encrypt.c: #define D 256
encrypt.c:           ^
encrypt.c: In file included from encrypt.c:18:
encrypt.c: In file included from /usr/lib/llvm-11/lib/clang/11.0.1/include/x86intrin.h:13:
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:211:20: error: cannot take the address of an rvalue of type 'int'
encrypt.c:   __builtin_memcpy(&D, &__A, sizeof(__A));
encrypt.c:                    ^~
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:227:22: error: expected identifier or '('
encrypt.c:   unsigned long long D;
encrypt.c:                      ^
encrypt.c: ./param.h:29:11: note: expanded from macro 'D'
encrypt.c: #define D 256
encrypt.c:           ^
encrypt.c: In file included from encrypt.c:18:
encrypt.c: In file included from /usr/lib/llvm-11/lib/clang/11.0.1/include/x86intrin.h:13:
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:228:20: error: cannot take the address of an rvalue of type 'int'
encrypt.c:   __builtin_memcpy(&D, &__A, sizeof(__A));
encrypt.c:                    ^~
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:244:9: error: expected identifier or '('
encrypt.c: ...

Number of similar (implementation,compiler) pairs: 5, namely:

Implementation	Compiler
`T:avx2`	`clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`

Compiler output

try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(sampler.o): in function `sampler_zq':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/avx2/work/sampler.c:160: undefined reference to `barrett_zq'
try.c: collect2: error: ld returned 1 exit status

Number of similar (implementation,compiler) pairs: 1, namely:

Implementation	Compiler
`T:avx2`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`

Compiler output

try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(encrypt.o): in function `crypto_encrypt_keypair':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:60: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:68: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(encrypt.o): in function `crypto_encrypt':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:142: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:152: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(encrypt.o): in function `crypto_encrypt_open':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:196: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_core':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:282: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_768_1280':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:335: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `intt_core':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:310: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:322: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_1280_512':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:353: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_768_1024':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:374: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_1024_1024_inv':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:390: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_512_512_inv':
try.c: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:404: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: .../supercop-data/cezanne/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:405: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_512_256':
try.c: ...

Number of similar (implementation,compiler) pairs: 1, namely:

Implementation	Compiler
`T:opt`	`clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`

Compiler output

try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(encrypt.o): in function `crypto_encrypt_keypair':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:60: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:68: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(encrypt.o): in function `crypto_encrypt':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:142: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:152: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(encrypt.o): in function `crypto_encrypt_open':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/encrypt.c:196: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_768_1280':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:335: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_1280_512':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:353: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_768_1024':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:374: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_1024_1024_inv':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:390: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_512_512_inv':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:404: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:405: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_512_256':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:411: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_1024_1280':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:424: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccatoy.a(ntt.o): in function `ntt_butterfly_1280_256':
try.c: .../supercop-data/cezanne/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccatoy/opt/work/ntt.c:434: undefined reference to `barrett_16q'
try.c: ...

Number of similar (implementation,compiler) pairs: 1, namely:

Implementation	Compiler
`T:opt`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`

Namespace violations

encrypt.o crypto_encrypt T
encrypt.o crypto_encrypt_keypair T
encrypt.o crypto_encrypt_open T
fastrandombytes.o fastrandombytes T
fastrandombytes.o fastrandombytes_setseed T
fastrandombytes.o iv B
fastrandombytes.o key B
ntt.o intt_1024_1024_inv T
ntt.o intt_1280_256 T
ntt.o intt_1280_512 T
ntt.o intt_512_256 T
ntt.o ntt_1024_1280 T
ntt.o ntt_256_1024 T
ntt.o ntt_512_512_inv T
ntt.o ntt_768_1024 T
ntt.o ntt_768_1280 T
pack.o poly_decode T
pack.o poly_decode_c2 T
pack.o poly_encode T
pack.o poly_encode_c2 T
sampler.o sampler_binomial T
sampler.o sampler_zb T
sampler.o sampler_zq T

Number of similar (implementation,compiler) pairs: 10, namely:

Implementation	Compiler
`T:avx2`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:avx2`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:avx2`	`gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:opt`	`clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:opt`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:opt`	`gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`

Namespace violations

encrypt.o crypto_encrypt T
encrypt.o crypto_encrypt_keypair T
encrypt.o crypto_encrypt_open T
fastrandombytes.o fastrandombytes T
fastrandombytes.o fastrandombytes_setseed T
fastrandombytes.o iv B
fastrandombytes.o key B
ntt.o intt_1024_1024_inv T
ntt.o intt_1280_1280 T
ntt.o intt_512_512 T
ntt.o ntt_1024_1024 T
ntt.o ntt_512_512_inv T
pack.o poly_decode T
pack.o poly_decode_c2 T
pack.o poly_encode T
pack.o poly_encode_c2 T
product.o mp T
product.o product T
sampler.o sampler_binomial T
sampler.o sampler_zb T
sampler.o sampler_zq T

Number of similar (implementation,compiler) pairs: 9, namely:

Implementation	Compiler
`T:ref`	`clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:ref`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:ref`	`gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:ref`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`